2024
A. M. de Paula, S. Li, B. Hou, D. C. Teles-Ferreira, P. Kabacinski, H. Hosseini, J. McArthur, G. Cerullo, D. Y. Qiu, P. Guo, F. V. A. Camargo, “Time-domain observation of ultrafast self-trapped exciton formation in lead-free double halide perovskites”, 2024, in revision
S. Li, D. Chen, B. Li, H. Yan, B. J. Lawrie, B. Choi, D. Rhee, Y. Li, H. Zhao, L. Chen, A. Pattammattel, S. Sarker, D. Jariwala, P. Guo, “Spontaneous formation of single-crystalline spherulites in a chiral 2D hybrid perovskite”, 2024, submitted
Y. Li, M. Cotlet, I. Hadar, P. Guo, “Broadband emission in alkali halides triggered by Sb3+ doping”, Chemical Communications, 2024, accepted (doi: 10.1039/d4cc04021j)
H. Yang, S. Mandal, B. Li, T. K. Ghosh, J. M. Peterson, P. Guo, L. Dou, M. Chen, L. Huang, “Slow dephasing of coherent optical phonons in two-dimensional lead organic chalcogenides”, Journal of the American Chemical Society, 2024, ASAP (doi: 10.1021/jacs.4c12643)
Y. Li, S. Li, D. Chen, C. A. Kocoj, A. Yang, B. T. Diroll, P. Guo, “Mid-infrared photodetection with 2D metal halide perovskites at ambient temperature”, Science Advances, 2024, accepted (doi: 10.1126/sciadv.adk2778)
S. Li, B. Li, B. Xie, Y. Ma, S. Mohanraj, P. Guo, “All-optical probing of phase transition dynamics in 2D lead halide perovskites”, ACS Photonics, 2024, 11, 4507-4514 (doi: 10.1021/acsphotonics.4c01758; Rising Stars in Photonics)
D. Chen, S. Li, B. Li, P. Guo, “Thermal transport in metal halide perovskites and other third-generation photovoltaic materials”, Applied Physics Reviews, 2024, 11, 041311 (doi: 10.1063/5.0226632; Featured Article)
K. Wang, Z.-Y. Lin, A. De, C. A. Kocoj, W. Shao, H. Yang, Z. He, A. H. Coffey, C. B. Fruhling, Y. Tang, D. Varadharajan, C. Zhu, Y. S. Zhao, A. Boltasseva, V. M. Shalaev, P. Guo, B. M. Savoie, L. Dou, “Two-dimensional lattice-confined single-molecule-like aggregates”, Nature, 2024, 633, 567-574 (doi: 10.1038/s41586-024-07925-9)
W. Liu, Y. Wu, A. Vriza, C. Zhang, H. Jung, S. Hu, Y. Zhang, D. Chen, P. Guo, B. T. Diroll, G. Wang, R. D. Schaller, H. Chan, J. Mei, S. Wang, J. Xu, “Depolymerizable and recyclable luminescent polymers with high light-emitting efficiencies”, Nature Sustainability, 2024, 7, 1048-1056 (doi: 10.1038/s41893-024-01373-z)
T. Xiao, M. Hao, T. Duan, Y. Li, Y. Zhang, P. Guo, Y. Zhou, “Elimination of grain surface concaves for improved perovskite thin-film interfaces”, Nature Energy, 2024, 9, 999-1010 (doi: 10.1038/s41560-024-01567-x)
S. Xu, K. Evans-Lutterodt, S. Li, N. L. Williams, B. Hou, J. J. Huang, M. G. Boebinger, S. Lee, M. Wang, A. Singer, P. Guo, D. Y. Qiu, J. J. Cha, “Lithiation induced phases in 1T′-MoTe2 nanoflakes”, ACS Nano, 2024, 18, 17349-17358 (doi: 10.1021/acsnano.4c06330)
T. Duan, S. You, M. Chen, W. Yu, Y. Li, P. Guo, J. J. Berry, J. M. Luther, K. Zhu, Y. Zhou, “Chiral-structured heterointerface enables durable perovskite solar cells”, Science, 2024, 384, 878-884 (doi: 10.1126/science.ado5172)
Z. Dai, S. You, D. Chakraborty, S. Li, Y. Zhang, A. Ranka, S. Barlow, J. J. Berry, S. R. Marder, P. Guo, Y. Qi, K. Zhu, N. P. Padture, “Connecting interfacial mechanical adhesion, efficiency, and operational stability in high performance inverted perovskite solar cells”, ACS Energy Letters, 2024, 9, 1880-1887 (doi: 10.1021/acsenergylett.4c00510)
L. Jin, C. M. Perez, Y. Gao, K. Ma, J. Y. Park, S. Li, P. Guo, L. Dou, O. Prezhdo, L. Huang, “Superior phonon-limited exciton mobility in lead-free two-dimensional perovskites”, Nano Letters, 2024, 24, 3638-3646 (doi: 10.1021/acs.nanolett.3c04895)
S. Li, X. Xu, C. A. Kocoj, C. Zhou, Y. Li, D. Chen, J. A. Bennett, S. Liu, L. N. Quan, S. Sarker, M. Liu, D. Y. Qiu, P. Guo, “Large exchange-driven intrinsic circular dichroism of a chiral 2D hybrid perovskite”, Nature Communications, 2024, 15, 2573 (doi: 10.1038/s41467-024-46851-2; Editors’ Highlights Paper)
J. A. Jayworth, C. Decavoli, M. D. Capobianco, J. P. Menzel, S. R. Adler, C. A. Kocoj, J. G. Freeze, R. H. Crabtree, P. Guo, V. S. Batista, G. W. Brudvig, “BODIPY chemisorbed on SnO2 and TiO2 surfaces for photoelectrochemical applications”, ACS Applied Materials & Interfaces, 2024, 16, 14841-14851 (doi: 10.1021/acsami.3c18827)
D. Chen, S. B. Anantharaman, J. Wu, D. Y. Qiu, D. Jariwala, P. Guo, “Optical spectroscopic detection of Schottky barrier height at a two-dimensional transition-metal dichalcogenide/metal interface”, Nanoscale, 2024, 16, 5169-5176 (doi: 10.1039/d3nr05799b; Emerging Investigators Collection 2024)
B. Li, J. Xu, C. A. Kocoj, S. Li, Y. Li, D. Chen, S. Zhang, L. Dou, P. Guo, “Dual-hyperspectral pump-probe microscopy with single-nanosecond time resolution”, Journal of the American Chemical Society, 2024, 146, 2187-2195 (doi: 10.1021/jacs.3c12284)
I. S. Yang, Z. Dai, A. Ranka, D. Chen, K. Zhu, J. J. Berry, P. Guo, N. P. Padture, “Simultaneous enhancement of efficiency and operational stability of mesoscopic perovskite solar cells via interfacial toughening”, Advanced Materials, 2024, 36, 2308819 (doi: 10.1002/adma.202308819)
2023
J. Y. Park, R. Song, J. Liang, L. Jin, K. Wang, S. Li, E. Shi, Y. Gao, M. Zeller, S. J. Teat, P. Guo, L. Huang, Y. S. Zhao, V. Blum, L. Dou, “Thickness control of organic semiconductor-incorporated perovskites”, Nature Chemistry, 2023, 15, 1745-1753 (doi: 10.1038/s41557-023-01311-0)
J. L. Hart, L. Bhatt, Y. Zhu, M.-G. Han, E. Bianco, S. Li, D. J. Hynek, J. A. Schneeloch, Y. Tao, D. Louca, P. Guo, Y. Zhu, F. Jornada, E. J. Reed, L. F. Kourkoutis, J. J. Cha, “Emergent layer stacking arrangements in c-axis confined MoTe2”, Nature Communications, 2023, 14, 4803 (doi: 10.1038/s41467-023-40528-y)
Z. Gao, A. Wildenborg, C. A. Kocoj, E. Liu, C. Sheofsky, A. Rawashdeh, H. Qu, P. Guo, J. Y. Suh, A. Yang, “Low-loss plasmonics with nanostructured potassium and solution-potassium liquid alloys”, Nano Letters, 2023, 23, 7150-7156 (doi: 10.1021/acs.nanolett.3c02054)
D. Chen, M. Fortin-Deschenes, Y. Lou, H. Lee, J. Xu, A. A. Sheikh, K. Watanabe, T. Taniguchi, Y. Xia, F. Xia, P. Guo, “Direct spectroscopic observation of cross-plane heat transfer in a two-dimensional van der Waals heterostructure”, The Journal of Physical Chemistry C, 2023, 127, 9121-9128 (doi: 10.1021/acs.jpcc.3c01144; Early-Career in Physical Chemistry Vol. 2; Supplementary Cover Article)
J. Jin, L. N. Quan, M. Gao, C. Chen, P. Guo, P. Yang, “Octahedral distortion and excitonic bahavior of Cs3Bi2Br9 halide perovskite at low temperature”, The Journal of Physical Chemistry C, 2023, 127, 3523-3531 (doi: 10.1021/acs.jpcc.2c07642)
A. Azmy, S. Li, G. K. Angeli, C. Welton, P. Raval, M. Li, N. Zibouche, L. Wojtas, G. N. M. Reddy, P. Guo, P. N. Trikalitis, I. Spanopoulos, “Porous and water stable 2D hybrid metal halide with strong broad light emission and selective H2O vapor sorption”, Angewandte Chemie, 2023, 62, e202218429 (doi: 10.1002/anie.202218429; inner cover)
M. Hao, T. Duan, Z. Ma, M.-G. Ju, J. Bennett, T. Liu, P. Guo, Y. Zhou, “Flattening grain-boundary grooves for perovskite solar cells with high opto-mechanical reliability”, Advanced Materials, 2023, 35, 202211155 (doi: 10.1002/adma.202211155)
S. Li, Z. Dai, C. A. Kocoj, E. I. Altman, N. P. Padture, P. Guo, “Photothermally induced, reversible phase transition in methylammonium lead triiodide”, Matter, 2023, 6, 460-474 (doi: 10.1016/j.matt.2022.11.004)
2022
S. Li, X. Li, C. A. Kocoj, X. Ji, S. Yuan, E. C. Macropulos, C. C. Stoumpos, F. Xia, L. Mao, M. G. Kanatzidis, P. Guo, “Ultrafast excitonic response in two-dimensional hybrid perovskites driven by intense midinfrared pulses”, Physical Review Letters, 2022, 129, 177401 (doi: 10.1103/PhysRevLett.129.177401)
Z. Dai, S. Li, X. Liu, M. Chen, C. E. Athanasiou, B. W. Sheldon, H. Gao, P. Guo, N. P. Padture, “Dual-interface reinforced flexible perovskite solar cells for enhanced performance and mechanical reliability”, Advanced Materials, 2022, 34, 2200861 (doi: 10.1002/adma.202205301)
X. Li, H. Dong, G. Volonakis, C. C. Stoumpos, J. Even, C. Katan, P. Guo, M. G. Kanatzidis, “Ordered mixed-spacer 2D bromide perovskites and the dual role of 1,2,4-triazolium cation”, Chemistry of Materials, 2022, 34, 6541-6552 (doi: 10.1021/acs.chemmater.2c01432)
S. Li, Z. Dai, L. Li, N. P. Padture, P. Guo, “Time-resolved vibrational-pump visible-probe spectroscopy for thermal conductivity measurement of metal-halide perovskites”, Review of Scientific Instruments, 2022, 93, 053003 (doi: 10.1063/5.0083763)
X. Li, M. Kepenekian, L. Li, H. Dong, C. C. Stoumpos, R. Seshadri, C. Katan, P. Guo, J. Even, M. G. Kanatzidis, “Tolerance factor for stabilizing 3D hybrid halide perovskitoids using linear diammonium cations”, Journal of the American Chemical Society, 2022, 144, 3902-3912 (doi: 10.1021/jacs.1c11803)
M. Wang, A. Kumar, H. Dong, J. M. Woods, J. V. Pondick, S. Xu, P. Guo, D. Y. Qiu, J. J. Cha, “A gapped phase in semimetallic Td-WTe2 induced by lithium intercalation”, Advanced Materials, 2022, 34, 2200861 (doi: 10.1002/adma.202200861)
S. Li, P.-H. Ho, A. L. Falk, P. Guo, “Ultrafast infrared plasmon switching in aligned carbon-nanotube optical resonators”, Journal of Optics (Emerging Leaders 2022 collection), 2022, 24, 044009 (doi: 10.1088/2040-8986/ac5809)
X. Li, S. A. Cuthriell, A. Bergonzoni, H. Dong, B. Traoré, C. C. Stoumpos, P. Guo, J. Even, C. Katan, R. D. Schaller, M. G. Kanatzidis, “Expanding the cage of 2D bromide perovskites by large A-site cations”, Chemistry of Materials, 2022, 34, 1132-1142 (doi: 10.1021/acs.chemmater.1c03605)
2021
X. Li, B. Traoré, M. Kepenekian, L. Li, C. C. Stoumpos, P. Guo, J. Even, C. Katan, M. G. Kanatzidis, “Bismuth/silver-based 2D iodide double and 1D Bi perovskites: unconventional interplay between structural and electronic dimensions”, Chemistry of Materials, 2021, 33, 6206-6216 (doi: 10.1021/acs.chemmater.1c01952)
Pre-Yale
J. J. M. Hurley, Q. J. Meisner, P. Guo, R. D. Schaller, D. J. Gosztola, G. P. Wiederrecht, L. Zhu, “Triple Emission of 5’-(para-R-Phenylene)vinylene-2-(2’-Hydroxyphenyl)benzoxazole (PVHBO) – Part II – Emission from the Anions”, The Journal of Physical Chemistry A, 2022, 126, 1062-1075 (doi: 10.1021/acs.jpca.1c10167)
Q. J. Meisner, J. J. M. Hurley, P. Guo, A. Blood, R. D. Schaller, D. J. Gosztola, G. P. Wiederrecht, L. Zhu, “Triple Emission of 5’-(para-R-Phenylene)vinylene-2-(2’-Hydroxyphenyl)benzoxazole (PVHBO) – Part I – Dual Emission from the Neutral Species”, The Journal of Physical Chemistry A, 2022, 126, 1033-1061 (doi: 10.1021/acs.jpca.1c10165)
L. N. Quan, Y. Park, P. Guo, M. Gao, J. Jin, J. Huang, J. Copper, A. Schwarttzberg, R. D. Schaller, D. T. Limmer, P. Yang, “Vibrational relaxation dynamics in layered perovskite quantum wells”, Proceedings of the National Academy of Sciences, 2021, 118, e2104425118 (doi: 10.1073/pnas.2104425118)
J. Gong, X. Li, P. Guo, W. Huang, T. J. Marks, R. D. Schaller, T. Xu, “Suppressed air degradation and photodarkening of hybrid tin iodide perovskite achieved with reductive organic small molecule”, ACS Applied Energy Materials, 2021, 4, 4704-4710 (doi: 10.1021/acsaem.1c00316)
I. Spanopoulos, I. Hadar, W. Ke, P. Guo, E. M. Mozur, E. Morgan, S. Wang, S. Padgaonkar, G. N. Manjunantha Reddy, E. A. Weiss, M. C. Hersam, R. Seshadri, R. D. Schaller, M. G. Kanatzidis, “Tunable broad light emission from 3D “hollow” bromide perovskites through defect engineering”, Journal of the American Chemical Society, 2021, 143, 7069-7080 (doi: 10.1021/jacs.1c01727)
A. D. Christodoulides, P. Guo, L. Dai, J. M. Hoffman, X. Li, X. Zuo, D. Rosenmann, A. Brumberg, M. G. Kanatzidis, R. D. Schaller, J. A. Malen, “Signatures of coherent phonon transport in ultralow thermal conductivity two-dimensional Ruddlesden-Popper phase perovskites”, ACS Nano, 2021, 15, 4165-4172 (doi: 10.1021/acsnano.0c03595)
L. Mao, P. Guo, S. Wang, A. K. Cheetham, R. Seshadri, “Design principles for enhancing photoluminescence quantum yield in hybrid manganese bromides”, Journal of the American Chemical Society, 2020, 142, 13582-13589 (doi: 10.1021/jacs.0c06039)
C. Wang, S. Yu, X. Guo, T. Kearney, P. Guo, R. P. H. Chang, J. Chen, W. Chen, C. Sun, “Maximizing solar energy utilization through multicriteria Pareto optimization of energy harvesting and regulating smart windows”, Cell Reports Physical Science, 2020, 1, 100108 (doi: 10.1016/j.xcrp.2020.100108)
Y. Xu, G. Zhao, L. Zhu, Q. Fei, Z. Zhang, Z. Chen, F. An, Y. Chen, Y. Ling, P. Guo, S. Ding, G. Huang, P.-Y. Chen, Q. Cao, Z. Yan, “Pencil-paper on-skin electronics”, Proceedings of the National Academy of Sciences, 2020, 117, 18292-18301 (doi: 10.1073/pnas.2008422117)
X. Li, Y. Fu, L. Pedesseau, P. Guo, S. Cuthriell, I. Hadar, J. Even, C. Katan, C. C. Stoumpos, R. D. Schaller, E. Harel, M. G. Kanatzidis, “Negative pressure engineering with large cage cations in 2D halide perovskites causes lattice softening”, Journal of the American Chemical Society, 2020, 142, 11486-11496 (doi: 10.1021/jacs.0c03860)
I. Spanopoulos, I. Hadar, W. Ke, P. Guo, S. Sidhik, M. Kepenekian, J. Even, A. D. Mohite, R. D. Schaller, M. G. Kanatzidis, “Water stable 1D hybrid tin (II) iodide emits broad light with 36% photoluminescence quantum efficiency”, Journal of the American Chemical Society, 2020, 142, 9028-9038 (doi: 10.1021/jacs.0c03004)
L. Mao, P. Guo, M. Kepenekian, I. Spanopoulos, Y. He, C. Katan, J. Even, R. D. Schaller, R. Seshadri, C. C. Stoumpos, M. G. Kanatzidis, “Organic cation alloying on intralayer A and interlayer A’ sites 2D hybrid Dion-Jacobson lead bromide perovskites A’APb2Br7”, Journal of the American Chemical Society, 2020, 142, 8342-8351 (doi: 10.1021/jacs.0c01625)
P. Guo*, Y. Xia*, J. Gong, D. H. Cao, X. Li, X. Li, Q. Zhang, C. C. Stoumpos, M. S. Kirschner, H. Wen, V. B. Prakapenka, J. B. Ketterson, A. B. F. Martinson, T. Xu, M. G. Kanatzidis, M. K. Y. Chan, R. D. Schaller, “Direct observation of bandgap oscillations induced by optical phonons in hybrid lead iodide perovskites”, Advanced Functional Materials, 2020, 30, 1907982 (doi: 10.1002/adfm.201907982)
X. Li, Y. He, M. Kepenekian, P. Guo, W. Ke, J. Even, C. Katan, C. C. Stoumpos, R. D. Schaller, M. G. Kanatzidis, “Three-dimensional lead iodide perovskitoid hybrids with high X-ray photoresponse”, Journal of the American Chemical Society, 2020, 142, 6625-6637 (doi: 10.1021/jacs.0c00101)
M. Hu, M. Chen, P. Guo, H. Zhou, J. Deng, Y. Yao, Y. Jiang, J. Gong, Z. Dai, Y. Zhou, F. Qian, X. Chong, J. Feng, R. D. Schaller, K. Zhu, N. P. Padture, Y. Zhou, “Sub-1.4 eV bandgap inorganic perovskite solar cells with long-term stability”, Nature Communications, 2020, 11, 151 (doi: 10.1038/s41467-019-13908-6)
Y. Xu, B. Sun, Y. Ling, Q. Fei, Z. Chen, X. Li, P. Guo, N. Jeon, S. Goswami, Y. Liao, S. Ding, Q. Yu, J. Lin, G. Huang, Z. Yan, “Multiscale porous elastomer substrates for multifunctional on-skin electronics with passive-cooling capabilities”, Proceedings of the National Academy of Sciences, 2019, 117, 205-213 (doi: 10.1073/pnas.1917762116)
X. Li, W. Ke, B. Traoré, P. Guo, I. Hadar, M. Kepenekian, J. Evan, C. Katan, C. C. Stoumpos, R. D. Schaller, M. G. Kanatzidis, “Two-dimensional Dion-Jacobson hybrid lead halide perovskites with aromatic diammonium cation”, Journal of the American Chemical Society, 2019, 141, 12880-12890 (doi: 10.1021/jacs.9b06398)
Z. Chen, H. Zhang, P. Guo, J. Zhang, G. Tira, Y. J. Kim, Y. A. Wu, Y. Liu, J. Wen, T. Rajh, J. Niklas, O. G. Poluektov, P. D. Laible, E. A. Rozhkova, “Semi-artificial photosynthetic CO2 reduction through purple membrane re-engineering with semiconductor”, Journal of the American Chemical Society, 2019, 141, 11811-11815 (doi: 10.1021/jacs.9b05564)
H. Zhao, K. Li, M. Han, F. Zhu, A. V.-Guardado, P. Guo, Z. Xie, Y. Park, L. Chen, X. Wang, H. Luan, Y. Yang, H. Wang, C. Liang, Y. Xue, R. D. Schaller, D. Chanda, Y. Huang, Y. Zhang, J. A. Rogers, “Buckling and twisting of advanced materials into morphable 3D mesostructures”, Proceedings of the National Academy of Sciences, 2019, 116, 13239-13248 (doi: 10.1073/pnas.1901193116)
X. Li, P. Guo, M. Kepenekian, I. Hadar, C. Katan, J. Evan, C. C. Stoumpos, R. D. Schaller, M. G. Kanatzidis, “Small cyclic diammonium cation templated (110)-oriented 2D halide (X=I, Br, Cl) perovskite with white-light emission”, Chemistry of Materials, 2019, 31, 3582-3590 (doi: 10.1021/acs.chemmater.9b01511)
B. Wang, P. Guo, L. Zeng, X. Yu, A. Sil, W. Huang, M. J. Leonardi, X. Zhang, G. Wang, S. Lu, Z. Chen, M. J. Bedzyk, R. D. Schaller, T. J. Marks, A. Facchetti, “Expeditious, scalable growth of metal oxide films by combustion blade coating for flexible electronics”, Proceedings of the National Academy of Sciences, 2019, 116, 9230-9238 (doi: 10.1073/pnas.1901492116)
J. Gong, X. Li, P. Guo, I. Zhang, W. Huang, K. Lu, Y. Cheng, R. D. Schaller, T. J. Marks, T. Xu, “Energy-distinguishable bipolar UV photoelectron injection from LiCl-promoted FAPbCl3 perovskite nanorods”, Journal of Materials Chemistry A, 2019, 7, 13043-13049 (doi: 10.1039/C9TA01160A)
D. H. Cao, P. Guo, A. Mannodi-Kanakkithodi, G. P. Wiederrecht, D. J. Gosztola, N. Jeon, R. D. Schaller, M. K. Y. Chan, A. B. F. Martinson, “Charge transfer dynamics of phase-segregated halide perovskites: CH3NH3PbCl3 and CH3NH3PbI3 or (C4H9NH3)2(CH3NH3)n-1PbnI3n+1 Mixtures”, ACS Applied Materials & Interfaces, 2019, 11, 9583-9593 (doi: 10.1021/acsami.8b20928)
M. S. Kirschner, B. T. Diroll, P. Guo, S. M. Harvey, W. Helweh, N. C. Flanders, A. Brumberg, N. Watkins, A. A. Leonard, A. M. Evans, W. R. Dichtel, X. Zhang, L. X. Chen, R. D. Schaller, “Photoinduced, reversible phase transition in all inorganic perovskite nanocrystals”, Nature Communications, 2019, 10, 504 (doi: 10.1038/s41467-019-08362-3)
P. Guo, A. Mannodi-Kanakkithodi, J. Gong, Y. Xia, C. C. Stoumpos, D. H. Cao, B. T. Diroll, J. B. Ketterson, G. P. Wiederrecht, T. Xu, M. K. Y. Chan, M. G. Kanatzidis, R. D. Schaller, “Infrared-pump electronic-probe of methylammonium lead iodide reveals electronically decoupled organic and inorganic sublattices”, Nature Communications, 2019, 10, 482 (doi: 10.1038/s41467-019-08363-2)
B. T. Diroll, M. S. Kirschner, P. Guo, R. D. Schaller, “Optical and physical probing of thermal processes in semiconductor and plasmonic nanocrystals”, Annual Review of Physical Chemistry, 2019, 70, 353-377 (doi: 10.1146/annurev-physchem-042018-052639)
B. T. Diroll, P. Guo, R. D. Schaller, “Heat transfer at hybrid interfaces: interfacial ligand-to-nanocrystal heating monitored with infrared pump, electronic probe (IPEP) spectroscopy”, Nano Letters, 2018, 18, 7863-7869 (doi: 10.1021/acs.nanolett.8b03640)
P. Guo, W. Huang, C. C. Stoumpos, L. Mao, J. Gong, L. Zeng, B. T. Diroll, Y. Xia, X. Ma, D. J. Gosztola, T. Xu, J. B. Ketterson, M. J. Bedzyk, A. Facchetti, T. J. Marks, M. G. Kanatzidis, R. D. Schaller, “Hyperbolic dispersion arising from anisotropic excitons in two-dimensional perovskites”, Physical Review Letters, 2018, 121, 127401 (doi: 10.1103/PhysRevLett.121.127401)
L. Mao, P. Guo, M. Kepenekian, I. Hadar, C. Katan, J. Even, R. D. Schaller, C. C. Stoumpos, M. G. Kanatzidis, “Structural diversity in white-light emitting hybrid lead bromide perovskites”, Journal of the American Chemical Society, 2018, 140, 13078-13088 (doi: 10.1021/jacs.8b08691)
P. Guo, J. Gong, S. Sadasivam, Y. Xia, T.-B. Song, B. T. Diroll, C. C. Stoumpos, J. B. Ketterson, M. G. Kanatzidis, M. K. Y. Chan, P. Darancet, T. Xu, R. D. Schaller, “Slow thermal equilibration in methylammonium lead iodide revealed by transient mid-infrared spectroscopy”, Nature Communications, 2018, 9, 2792 (doi: 10.1038/s41467-018-05015-9)
J. Gong, P. Guo, S. E. Benjamin, G. V. Patten, R. D. Schaller, T. Xu, “Cation engineering on lead iodide perovskites for stable and high-performance photovoltaics applications”, Journal of Energy Chemistry, 2018, 27, 1017-1039 (doi: 10.1016/j.jechem.2017.12.005)
P. Guo, C. C. Stoumpos, L. Mao, S. Sadasivam, J. B. Ketterson, P. Darancet, M. G. Kanatzidis, R. D. Schaller, “Cross-plane coherent acoustic phonons in two-dimensional organic-inorganic hybrid perovskites”, Nature Communications, 2018, 9, 2019 (doi: 10.1038/s41467-018-04429-9)
W. Huang, P. Guo, L. Zeng, R. Li, B. Wang, G. Wang, X. Zhang, R. P. H. Chang, J. Yu, M. J. Bedzyk, T. J. Marks, A. Facchetti, “Metal composition and polyethylenimine doping capacity effects on semiconducting metal oxide-polymer blend charge transport”, Journal of the American Chemical Society, 2018, 140, 5457-5473 (doi: 10.1021/ja513254z)
P. Guo, B. T. Diroll, W. Huang, L. Zeng, B. Wang, M. J. Bedzyk, A. Facchetti, T. J. Marks, R. P. H. Chang, R. D. Schaller, “Low-loss near-infrared hyperbolic metamaterials with epitaxial ITO-In2O3 multilayers”, ACS Photonics, 2018, 5, 2000-2007 (doi: 10.1021/acsphotonics.7b01485)
B. T. Diroll, P. Guo, R. D. Schaller, “Unique optical properties of methylammonium lead iodide nanocrystals below the bulk tetragonal-orthorhombic phase transition”, Nano Letters, 2018, 18, 846-852 (doi: 10.1021/acs.nanolett.7b04099)
G. Liu, L. Kong, P. Guo, C. C. Stoumpos, Q. Hu, Z. Liu, Z. Cai, D. J. Gosztola, H.-K. Mao, M. G. Kanatzidis, R. D. Schaller, “Two-regimes of bandgap redshift and partial ambient retention in pressure treated two-dimensional perovskites”, ACS Energy Letters, 2017, 2, 2518-2524 (doi: 10.1021/jacs.9b06398)
P. Guo, Y. Xia, J. Gong, C. C. Stoumpos, K. M. McCall, G. C. B. Alexander, Z. Ma, H. Zhou, D. J. Gosztola, J. B. Ketterson, M. G. Kanatzidis, T. Xu, M. K. Y. Chan, R. D. Schaller, “Polar fluctuations in metal-halide perovskites uncovered by acoustic phonon anomalies”, ACS Energy Letters, 2017, 2, 2463-2469 (doi: 10.1021/acsenergylett.7b00790)
B. T. Diroll, K. S. Schramke, P. Guo, U. R. Kortshagen, R. D. Schaller, “Ultrafast silicon photonics with visible to mid-infrared pumping of silicon nanocrystals”, Nano Letters, 2017, 17, 6409-6414 (doi: 10.1021/acs.nanolett.7b03393)
P. Guo, R. P. H. Chang, R. D. Schaller, “Tunable infrared hyperbolic metamaterials with periodic indium-tin-oxide nanorods”, Applied Physics Letters, 2017, 111, 021108 (doi: 10.1063/1.4993426)
K. Chen, P. Guo, T. D. Dao, S. Q. Li, S. Ishiii, T. Nagao, R. P. H. Chang, “Protein-functionalized indium-tin oxide nanoantenna arrays for selective infrared biosensing”, Advanced Optical Materials, 2017, 5, 1700091 (doi: 10.1002/adom.201700091)
P. Guo, R. P. H. Chang, R. D. Schaller, “Transient negative optical nonlinearity of indium oxide nanorod arrays in the full-visible range”, ACS Photonics, 2017, 4, 1494-1500 (doi: 10.1021/acsphotonics.7b00278)
M. S. Weimer, I. S. Kim, P. Guo, R. D. Schaller, A. B. F. Martinson, A. S. Hock, “Oxidation state discrimination in the atomic layer deposition of vanadium oxides”, Chemistry of Materials, 2017, 29, 6238-6244 (doi: 10.1021/acs.chemmater.7b01130)
H. Liao, P. Guo, C. Hsu, M. Lin, B. Wang, L. Zeng, W. Huang, W. Su, M. J. Bedzyk, M. R. Wasielewski, A. Facchetti, R. P. H. Chang, M. G. Kanatzidis, T. J. Marks, “Enhanced efficiency of hot-cast large-area planar perovskite solar cells/modules having controlled chloride incorporation”, Advanced Energy Materials, 2017, 7, 1601660 (doi: 10.1002/aenm.201601660)
P. Guo, M. S. Weimer, J. D. Emery, B. T. Diroll, X. Chen, A. S. Hock, R. P. H. Chang, A. B. F. Martinson, R. D. Schaller, “Conformal coating of a phase change material on ordered plasmonic nanorod arrays for broadband all-optical switching”, ACS Nano, 2017, 11, 693-701 (doi: 10.1021/acsnano.6b07042)
B. T. Diroll, P. Guo, R. P. H. Chang, R. D. Schaller, “Large transient optical modulation of epsilon-near-zero colloidal nanocrystals”, ACS Nano, 2016, 10, 10099-10105 (doi: 10.1021/acsnano.6b05116)
P. Guo, R. D. Schaller, L. E. Ocola, B. T. Diroll, J. B. Ketterson, R. P. H. Chang, “Large optical nonlinearity of ITO nanorods for sub-picosecond all-optical modulation of the full-visible spectrum”, Nature Communications, 2016, 7, 12892 (doi: 10.1038/ncomms12892)
X. Chen*, P. Guo*, C. He, B. Dong, L. E. Ocola, R. D. Schaller, R. P. H. Chang, C. Sun, “Scaling the artificial polariton bandgap at infrared frequencies using indium-tin-oxide nanorod arrays”, Advanced Optical Materials, 2016, 4, 2077-2084 (doi: 10.1002/adom.201600439)
P. Guo, R. D. Schaller, L. E. Ocola, J. B. Ketterson, R. P. H. Chang, “Gigahertz acoustic vibrations of elastically anisotropic indium-tin-oxide nanorod arrays”, Nano Letters, 2016, 16, 5639-5646 (doi: 10.1021/acs.nanolett.6b02217)
W. Huang, L. Zeng, X. Yu, P. Guo, B. Wang, Q. Ma, R. P. H. Chang, J. Yu, M. J. Bedzyk, T. J. Marks, A. Facchetti, “Metal oxide transistors via polyethylenimine doping of the channel layer: interplay of doping, microstructure, and charge transport”, Advanced Functional Materials, 2016, 26, 6179-6187 (doi: 10.1021/jacs.8b01252)
H. Liao, T. L. D. Tam, P. Guo, Y. Wu, E. F. Manley, W. Huang, N. Zhou, C. M. M. Soe, B. Wang, M. R. Wasielewski, L. X. Chen, M. G. Kanatzidis, A. Facchetti, R. P. H. Chang, T. J. Marks, “Dopant-free hole transporting polymers for high efficiency, environmentally stable perovskite solar cells”, Advanced Energy Materials, 2016, 6, 1600502 (doi: 10.1002/aenm.201600502)
P. Guo, R. D. Schaller, J. B. Ketterson, R. P. H. Chang, “Ultrafast switching of tunable infrared plasmons in indium tin oxide nanorod arrays with large absolute amplitude”, Nature Photonics, 2016, 10, 267-273 (doi: 10.1038/nphoton.2016.14)
B. Wang, X. Yu, P. Guo, W. Huang, L. Zeng, N. Zhou, L. Chi, M. J. Bedzyk, R. P. H. Chang, T. J. Marks, A. Facchetti, “Solution processed all-oxide transparent high-performance transistors fabricated by spray-combustion synthesis”, Advanced Electronic Materials, 2016, 2, 1500427 (doi: 10.1002/aelm.201500427)
N. Zhou, A. S. Dudnik, T. I.N.G. Li, E. F. Manley, T. J. Aldrich, P. Guo, H. Liao, Z. Chen, L. X. Chen, R. P. H. Chang, A. Facchetti, M. O. de la Cruz, T. J. Marks, “All-polymer solar cell performance optimized via systematic molecular weight tuning of both donor and acceptor polymers”, Journal of the American Chemical Society, 2016, 138, 1240-1251 (doi: 10.1021/jacs.5b10735)
J. D. Emery, C. M. Schleputz, P. Guo, R. P. H. Chang, A. B. F. Martinson, “Epitaxial atomic layer deposition of tin-doped indium oxide”, Crystal Growth & Design, 2016, 16, 640-645 (doi: 10.1021/acs.cgd.5b01086)
F. Hao, C. C. Stoumpos, P. Guo, N. Zhou, T. J. Marks, R. P. H. Chang, M. G. Kanatzidis, “Solvent-mediated crystallization of CH3NH3SnI3 films for heterojunction depleted perovskite solar cells”, Journal of the American Chemical Society, 2015, 137, 11445-11452 (doi: 10.1021/jacs.5b06658)
N. Zhou, S. Vegiraju, X. Yu, E. F. Manley, M. R. Butler, M. J. Leonardi, P. Guo, W. Zhao, Y. Hu, K. Prabakaran, R. P. H. Chang, M. A. Ratner, L. X. Chen, A. Facchetti, M. Chen, T. J. Marks, “Diketopyrrolopyrrole (DPP) functionalized tetrathienothiophene (TTA) small molecules for organic thin film transistors and organic photovoltaic cells”, Journal of Materials Chemistry C, 2015, 3, 8932-8941 (doi: 10.1039/C5TC01348H)
G. Zhu, H. Wang, G. Yang, L. Chen, P. Guo, L. Zhang, “A facile synthesis of ZnO/CNT hierarchical microsphere composites with enhanced photocatalytic degradation of methylene blue”, RSC Advances, 2015, 5, 72476-72481 (doi: 10.1039/C5RA11873E)
N. Zhou, K. Prabakaran, B. Lee, S. H. Chang, B. Harutyunyan, P. Guo, M. R. Butler, A. Timalsina, M. J. Bedzyk, M. A. Ratner, S. Vegiraju, S. Yau, C. Wu, R. P. H. Chang, A. Facchetti, M-C. Chen, T. J. Marks, “Metal-free tetrathienoacene (TTA) sensitizers for high-performance dye-sensitized solar cells”, Journal of the American Chemical Society, 2015, 137, 4414-4423 (doi: 10.1021/ja513254z)
X. Yu, J. Smith, N. Zhou, L. Zeng, P. Guo, Y. Xia, A. Alvarez, S. Aghion, H. Lin, J. Yu, R. P. H. Chang, M. J. Bedzyk, R. Ferragut, T. J. Marks, A. Facchetti, “Spray-combustion synthesis: efficient solution route to high-performance oxide transistors”, Proceedings of the National Academy of Sciences, 2015, 112, 3217-3222 (doi: 10.1073/pnas.1501548112)
X. Yu, L. Zeng, N. Zhou, P. Guo, F. Shi, D. B. Buchholz, Q. Ma, J. Yu, V. P. Dravid, R. P. H. Chang, M. J. Bedzyk, T. J. Marks, A. Facchetti, “Ultra-flexible, “invisible” thin-film transistors enabled by amorphous metal oxide/polymer channel layer blends”, Advanced Materials, 2015, 27, 2390-2399 (doi: 10.1002/adma.201405400)
J. D. Emery, C. M. Schleputz, P. Guo, S. C. Riha, R. P. H. Chang, A. B. F. Martinson, “Atomic layer deposition of metastable β-Fe2O3 via isomorphic epitaxy for photo-assisted water oxidation”, ACS Applied Materials & Interfaces, 2014, 6, 21894-21900 (doi: 10.1021/am507065y)
B. Lee*, P. Guo*, S. Q. Li, D. B. Buchholtz, R. P. H. Chang, “Three-dimensional indium-tin-oxide nanorod array for charge collection in dye-sensitized solar cells”, ACS Applied Materials & Interfaces, 2014, 6, 17713-17722 (ACS Editors’ Choice, Front Cover Article) (doi: 10.1021/am504126g)
N. Zhou, B. Lee, A. Timalsina, P. Guo, X. Yu, T. J. Marks, A. Facchetti, R. P. H. Chang, “Cross-linkable molecular hole-transporting semiconductor for solid-state dye-sensitized solar cells”, The Journal of Physical Chemistry C, 2014, 118, 16967-16975 (doi: 10.1021/jp500489f)
S. Q. Li, P. Guo, D. B. Buchholtz, W. Zhou, T. W. Odom, J. B. Ketterson, L. E. Ocola, K. Sakoda, R. P. H. Chang, “Plasmonic-photonic mode coupling in indium-tin-oxide nanorod arrays”, ACS Photonics, 2014, 1, 163-172 (doi: 10.1021/ph400038g)
J. Zhang, J. Lu, Q. Jiang, B. Lu, X. Pan, L. Chen, Z. Ye, X. Li, P. Guo, N. Zhou, “Stability of amorphous InAlZnO thin-film transistors”, Journal of Vacuum Science and Technology B, 2014, 32, 010602 (doi: 10.1116/1.4862150)
J. Zhang, X. Li, J. Lu, N. Zhou, P. Guo, B. Lu, X. Pan, L. Chen, Z. Ye, “Water assisted oxygen absorption on the instability of amorphous InAlZnO thin-film transistors”, RSC Advances, 2014, 4, 3145-3148 (doi: 10.1039/C3RA44513E)
N. Zhou, H. Lin, S. J. Lou, X. Yu, P. Guo, E. F. Manley, S. Loser, P. Hartnett, H. Huang, M. R. Wasielewski, L. X. Chen, R. P. H. Chang, A. Facchetti, T. J. Marks, “Morphology-performance relationships in high-efficiency all-polymer solar cells”, Advanced Energy Materials, 2014, 4, 1300785 (doi: 10.1002/aenm.201300785)
S. Li, P. Guo, L. Zhang, W. Zhou, T. W. Odom, T. Seideman, J. B. Ketterson, R. P. H. Chang, “Infrared plasmonics with indium-tin-oxide nanorod arrays”, ACS Nano, 2011, 5, 9167-9170 (doi: 10.1021/nn203406f)
J. W. Zwanikken, P. Guo, C. A. Mirkin, M. O. de la Cruz, “Local ionic environment around polyvalent nucleic acid-functionalized nanoparticles”, The Journal of Physical Chemistry C, 2011, 115, 16368-16373 (doi: 10.1021/jp205583j)
B. Lee, D. B. Buchholtz, P. Guo, D. Hwang, R. P. H. Chang, “Optimizing the performance of a plastic dye-sensitized solar cell”, The Journal of Physical Chemistry C, 2011, 115, 9787-9796 (doi: 10.1021/jp201555n)
P. Guo, R. Sknepnek, M. O. de la Cruz, “Electrostatic-driven ridge formation on nanoparticles coated with charged end-group ligands”, The Journal of Physical Chemistry C, 2011, 115, 6484-6490 (doi: 10.1021/jp201598k)
M. Zou, J. Li, P. Guo, T. Kita, “Synthesis and thermoelectric properties of fine-grained FeVSb system half-Heusler compound polycrystals with high phase purity”, Journal of Physics D: Applied Physics, 2010, 43, 415403 (doi: 10.1088/0022-3727/43/41/415403)
B. Lee, D. Hwang, P. Guo, S. Ho, D. B. Buchholtz, C. Wang, R. P. H. Chang, “Materials, interfaces, and photon confinement in dye-sensitized solar cells”, The Journal of Physical Chemistry B, 2010, 114, 14582–14591 (doi: 10.1021/jp102359r)