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Stability-limiting heterointerfaces of perovskite photovoltaics.
Tan, Shaun; Huang, Tianyi; Yavuz, Ilhan; Wang, Rui; Yoon, Tae Woong; Xu, Mingjie; Xing, Qiyu; Park, Keonwoo; Lee, Do-Kyoung; Chen, Chung-Hao; Zheng, Ran; Yoon, Taegeun; Zhao, Yepin; Wang, Hao-Cheng; Meng, Dong; Xue, Jingjing; Song, Young Jae; Pan, Xiaoqing; Park, Nam-Gyu; Lee, Jin-Wook; Yang, Yang.
  • Tan S; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, CA, USA.
  • Huang T; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, CA, USA.
  • Yavuz I; Department of Physics, Marmara University, Istanbul, Turkey.
  • Wang R; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, CA, USA. wangrui@westlake.edu.cn.
  • Yoon TW; School of Engineering, Westlake University and Institute of Advanced Technology, Westlake Institute for Advanced Study, Hangzhou, China. wangrui@westlake.edu.cn.
  • Xu M; SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nanoengineering, Sungkyunkwan University, Suwon, Republic of Korea.
  • Xing Q; Irvine Materials Research Institute, University of California Irvine, Irvine, CA, USA.
  • Park K; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, CA, USA.
  • Lee DK; SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nanoengineering, Sungkyunkwan University, Suwon, Republic of Korea.
  • Chen CH; School of Chemical Engineering, Sungkyunkwan University, Suwon, Republic of Korea.
  • Zheng R; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, CA, USA.
  • Yoon T; Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu, Taiwan.
  • Zhao Y; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, CA, USA.
  • Wang HC; SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nanoengineering, Sungkyunkwan University, Suwon, Republic of Korea.
  • Meng D; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, CA, USA.
  • Xue J; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, CA, USA.
  • Song YJ; Department of Materials Science and Engineering, National Yang Ming Chiao Tung University, Hsinchu, Taiwan.
  • Pan X; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, CA, USA.
  • Park NG; Department of Materials Science and Engineering and California NanoSystems Institute, University of California Los Angeles, Los Angeles, CA, USA.
  • Lee JW; SKKU Advanced Institute of Nanotechnology (SAINT) and Department of Nanoengineering, Sungkyunkwan University, Suwon, Republic of Korea.
  • Yang Y; Center for Integrated Nanostructure Physics, Institute for Basic Science (IBS), Suwon, Republic of Korea.
Nature ; 605(7909): 268-273, 2022 05.
Article en En | MEDLINE | ID: mdl-35292753
ABSTRACT
Optoelectronic devices consist of heterointerfaces formed between dissimilar semiconducting materials. The relative energy-level alignment between contacting semiconductors determinately affects the heterointerface charge injection and extraction dynamics. For perovskite solar cells (PSCs), the heterointerface between the top perovskite surface and a charge-transporting material is often treated for defect passivation1-4 to improve the PSC stability and performance. However, such surface treatments can also affect the heterointerface energetics1. Here we show that surface treatments may induce a negative work function shift (that is, more n-type), which activates halide migration to aggravate PSC instability. Therefore, despite the beneficial effects of surface passivation, this detrimental side effect limits the maximum stability improvement attainable for PSCs treated in this way. This trade-off between the beneficial and detrimental effects should guide further work on improving PSC stability via surface treatments.
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2022 Tipo del documento: Article
Texto completo
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Texto completo: 1 Banco de datos: MEDLINE Idioma: En Año: 2022 Tipo del documento: Article