journal article·2020-04-14Open access

Synthesis of Highly-Oriented Black CsPbI3 Microstructures for High-Performance Solar Cells

Tao Ye, Lu Pan, Yijun Yang, Qifeng Liang, Yue Lu, Manling Sui, Dmitri Golberg, Xi Wang

Chemistry of Materials· Volume 32· Issue 7

Abstract

Synthesis of a thin layer of perovskite with less pinholes and defects is vital for the construction of a high-performance perovskite solar cell (PSC). We report on an oriented attachment strategy to fabricate a black phase CsPbI3 highly oriented quasi-single-crystalline microstructure film for constructing a mesoporous PSC device with enhanced power conversion efficiency, from 13.4% to 16.0%. The theoretical calculations and detailed in/ex situ characterizations demonstrate that the oriented attachment is driven by the predominant adsorption of dimethyl sulfoxide (DMSO) on the {212} facets of the yellow phase δ-CsPbI3 crystals which initially form a relatively oriented structure followed by phase transition to α-CsPbI3 crystals and merging into a large highly oriented quasi-single-crystalline microstructure film with {200} planes exposed under annealing. Our work demonstrates that the oriented attachment strategy enables the formation of highly oriented quasi-single-crystalline perovskite microstructure films which are essential for realizing high-efficiency and stable thin film PSCs.
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Research context

OpenAlex topics: Perovskite Materials and Applications · Quantum Dots Synthesis And Properties · Advanced Photocatalysis Techniques

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

Key Laboratory of Luminescence and Optical Information, Ministry of Education, Department of Physics, School of Science, Beijing Jiaotong University, Beijing 100044, China

Chemistry and Chemical Engineering Guangdong Laboratory, Shantou 515031, China

Department of Physics, Shaoxing University, Shaoxing 312000, China

Institute of Microstructure and Properties of Advanced Materials, Beijing University of Technology, Beijing 100124, China

Centre for Materials Science, School of Chemistry and Physics, Science and Engineering Faculty, Queensland University of Technology (QUT), 2 George St., Brisbane, Queensland 4000, Australia

International Center for Materials Nanoarchitectonics (MANA), National Institute for Materials Science (NIMS), Namiki 1-1, Tsukuba, Ibaraki 3050044, Japan

Funding

Ministry of Education of the People's Republic of China · Ministry of Science and Technology of the People's Republic of China · Australian Research Council · Beijing Jiaotong University · National Natural Science Foundation of China · QUT Grant · Chemistry and Chemical Engineering Guangdong Laboratory

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