TY - JOUR
T1 - Inch-sized high-quality perovskite single crystals by suppressing phase segregation for light-powered integrated circuits
AU - Liu, Yucheng
AU - Zhang, Yunxia
AU - Zhu, Xuejie
AU - Yang, Zhou
AU - Ke, Weijun
AU - Feng, Jiangshan
AU - Ren, Xiaodong
AU - Zhao, Kui
AU - Liu, Ming
AU - Kanatzidis, Mercouri G.
AU - Liu, Shengzhong
N1 - Funding Information:
This work was funded by the National Key Research and Development Program of China (2017YFA0204800/2016YFA0202403), the National Natural Science Foundation of China (91733301/61674098/61604091), the program of China Scholarship Council (CSC no. 201906870044), the Strategic Priority Research Program of Chinese Academy of Sciences (XDA17040506), the DNL Cooperation Fund CAS (DNL180311), the 111 Project (B14041), and the Changjiang Scholar and Innovative Research Team (IRT_14R33). Part of the work carried out at Northwestern University was supported by the Office of Naval Research (N00014-17-1-2231).
Publisher Copyright:
Copyright © 2021 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC).
PY - 2021/2/10
Y1 - 2021/2/10
N2 - The triple-cation mixed-halide perovskite (FAxMAyCs1-x-y)Pb(IzBr1-z)3 (FAMACs) is the best composition for thin-film solar cells. Unfortunately, there is no effective method to prepare large single crystals (SCs) for more advanced applications. Here, we report an effective additive strategy to grow 2-inch-sized high-quality FAMACs SCs. It is found that the judiciously selected reductant [formic acid (FAH)] effectively minimizes iodide oxidation and cation deprotonation responsible for phase segregation. Consequently, the FAMACs SC shows more than fivefold enhancement in carrier lifetimes, high charge mobility, long carrier diffusion distance, as well as superior uniformity and long-term stability, making it possible for us to design high-performance self-powered integrated circuit photodetector. The device exhibits large responsivity, high photoconductive gain, excellent detectivity, and fast response speed; all values are among the highest reported to date for planar-type single-crystalline perovskite photodetectors. Furthermore, an integrated imaging system is fabricated on the basis of 12 × 12 pixelated matrixes of the single-crystal photodetectors.
AB - The triple-cation mixed-halide perovskite (FAxMAyCs1-x-y)Pb(IzBr1-z)3 (FAMACs) is the best composition for thin-film solar cells. Unfortunately, there is no effective method to prepare large single crystals (SCs) for more advanced applications. Here, we report an effective additive strategy to grow 2-inch-sized high-quality FAMACs SCs. It is found that the judiciously selected reductant [formic acid (FAH)] effectively minimizes iodide oxidation and cation deprotonation responsible for phase segregation. Consequently, the FAMACs SC shows more than fivefold enhancement in carrier lifetimes, high charge mobility, long carrier diffusion distance, as well as superior uniformity and long-term stability, making it possible for us to design high-performance self-powered integrated circuit photodetector. The device exhibits large responsivity, high photoconductive gain, excellent detectivity, and fast response speed; all values are among the highest reported to date for planar-type single-crystalline perovskite photodetectors. Furthermore, an integrated imaging system is fabricated on the basis of 12 × 12 pixelated matrixes of the single-crystal photodetectors.
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U2 - 10.1126/sciadv.abc8844
DO - 10.1126/sciadv.abc8844
M3 - Article
C2 - 33568474
AN - SCOPUS:85101000085
SN - 2375-2548
VL - 7
JO - Science advances
JF - Science advances
IS - 7
M1 - eabc8844
ER -