Photovoltaic & Optoelectronic Device Group: publications

Reduced‐Dimensional Engineering toward 2D R‐P (OAm)₂CsPb₂Br₇ Perovskite by Metal Ion Enabled Ligands Confinement Effect

Advanced Materials Interfaces Wiley 9:11 (2022) 2102251

Authors:

Xupeng Gao, Qiang Hu, Xin Li, Po Lu, Yuan Zhong, Xinyu Shen, William W Yu, Min Lu, Zhennan Wu, Siyao Yu, Xue Bai, Yu Zhang

Abstract:

AbstractThe dimension is a leading parameter in customization of unique optoelectronic properties of halide perovskite, while it is still challenging to achieve dimension control beyond the well‐developed composition regulation‐based strategy considering their intrinsic feature of ionic crystal. In this paper, ligands‐directed confinement effect is emphasized in rendering the reduced‐dimensional engineering of halide perovskite, and quasi‐2D (OAm)2CsPb2Br7 (n = 2) nanosheets are obtained by introducing a large amount of metal ions. As a representation, with Mg2+ participation, the initial adsorption of organic ligands (i.e., OA and OAm) to inorganic components (i.e., [PbBr6]4−) is promoted, conferring a ligands‐directed surface reconstruction to form the lamellar structure composed of alternate organic and inorganic layers. Namely, the inorganic–organic lamellar ensemble will play as a soft template, which effectively restricts the growth of [PbBr6]4− in the c‐axis direction even after the Cs‐OA injection, thus producing the anisotropic layered perovskite of (OAm)2CsPb2Br7 from CsPbBr3 scenario. Notably, such reduced‐dimensional engineering enables a remarkable luminescence tailoring, of which the deep blue emission centered at 439 nm is achieved. In addition, benefiting from such universal strategy, the luminescence is also dependent on the species of introduced metal ions (e.g., Ca2+, Co2+, Sr2+, and Mn2+).

Wide-Bandgap Perovskite Quantum Dots in Perovskite Matrix for Sky-Blue Light-Emitting Diodes

Journal of the American Chemical Society American Chemical Society (ACS) 144:9 (2022) 4009-4016

Authors:

Yuan Liu, Ziliang Li, Jian Xu, Yitong Dong, Bin Chen, So Min Park, Dongxin Ma, Seungjin Lee, Jianan Erick Huang, Sam Teale, Oleksandr Voznyy, Edward H Sargent

Utilizing Nonpolar Organic Solvents for the Deposition of Metal-Halide Perovskite Films and the Realization of Organic Semiconductor/Perovskite Composite Photovoltaics

ACS Energy Letters American Chemical Society (ACS) (2022) 1246-1254

Authors:

Nakita K Noel, Bernard Wenger, Severin N Habisreutinger, Henry J Snaith

Efficiency Potential and Loss Analysis of Inorganic CsPbI2Br Perovskite Solar Cells

Fundacio Scito (2022)

Authors:

Max Grischek, Steve Albrecht, Francisco Peña-Camargo, Jiahuan Zhang, Kari Sveinbjörnsson, Fenghuo Zu, Jarla Thiesbrummel, Jinzhao Li, Hampus Näsström, Pietro Caprioglio, José Antonio Márquez Prieto, Henry Snaith, Norbert Koch, Eva Unger, Thomas Unold, Dieter Neher, Martin Stolterfoht, Hannes Hempel

Mechanism of Electronic Coupling in Hybrid Transition Metal Dichalcogenide-2D Perovskite Heterostructures

Fundacio Scito (2022)

Authors:

Miriam Karpińska, Paulina Plochocka, Minpeng Liang, Roman Kempt, Jonas Ziegler, Kati Finzel, Harry Sansom, Takashi Taniguchi, Kenji Watanabe, Henry Snaith, Machteld Kamminga, Jakub Jasiński, Catherine Knodlseder, Mateusz Dyksik, Jianting Ye, Alessandro Surrente, Duncan Maude, Michał Baranowski, Łukasz Kłopotowski, Alexey Chernikov, Agnieszka Kuc, Nan Zhang

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