中国物理B ›› 2022, Vol. 31 ›› Issue (3): 37303-037303.doi: 10.1088/1674-1056/ac1fe0

所属专题: SPECIAL TOPIC — Emerging photovoltaic materials and devices

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Surface modulation of halide perovskite films for efficient and stable solar cells

Qinxuan Dai(戴沁煊)1,2,†, Chao Luo(骆超)2,†, Xianjin Wang(王显进)2, Feng Gao(高峰)2, Xiaole Jiang(姜晓乐)1, and Qing Zhao(赵清)2,3,‡   

  1. 1 Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China;
    2 State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China;
    3 Peking University Yangtze Delta Institute of Optoelectronics, Nantong 226010, China
  • 收稿日期:2021-06-20 修回日期:2021-07-19 接受日期:2021-08-22 出版日期:2022-02-22 发布日期:2022-02-24
  • 通讯作者: Qing Zhao E-mail:zhaoqing@pku.edu.cn
  • 基金资助:
    This work is supported by the National Key Research and Development Program of China (Grant Nos. 2019YFA0707003 and 2019YFE0114100), the National Natural Science Foundation of China (Grant No. 51872007), and Beijing Municipal Natural Science Foundation, China (Grant No. 7202094).

Surface modulation of halide perovskite films for efficient and stable solar cells

Qinxuan Dai(戴沁煊)1,2,†, Chao Luo(骆超)2,†, Xianjin Wang(王显进)2, Feng Gao(高峰)2, Xiaole Jiang(姜晓乐)1, and Qing Zhao(赵清)2,3,‡   

  1. 1 Key Laboratory of General Chemistry of the National Ethnic Affairs Commission, School of Chemistry and Environment, Southwest Minzu University, Chengdu 610041, China;
    2 State Key Laboratory for Mesoscopic Physics and Frontiers Science Center for Nano-optoelectronics, School of Physics, Peking University, Beijing 100871, China;
    3 Peking University Yangtze Delta Institute of Optoelectronics, Nantong 226010, China
  • Received:2021-06-20 Revised:2021-07-19 Accepted:2021-08-22 Online:2022-02-22 Published:2022-02-24
  • Contact: Qing Zhao E-mail:zhaoqing@pku.edu.cn
  • Supported by:
    This work is supported by the National Key Research and Development Program of China (Grant Nos. 2019YFA0707003 and 2019YFE0114100), the National Natural Science Foundation of China (Grant No. 51872007), and Beijing Municipal Natural Science Foundation, China (Grant No. 7202094).

摘要: As the main distribution place of deep-level defects and the entrance of water, the interface is critical to determining both the power conversion efficiency (PCE) and the stability of perovskite solar cells (PSCs). Suitable interface design can dramatically passivate interface defects and optimize energy level alignment for suppressing the nonradiative recombination and effectively extracting the photogenerated carriers towards higher PCE. Meanwhile, a proper interface design can also block the interface diffusion of ions for high operational stability. Therefore, interface modification is of great significance to make the PSCs more efficient and stable. Upon optimized material choices, the three-dimensional halide perovskite graded junction layer, low-dimensional halide perovskite interface layer and organic salt passivation layer have been constructed on perovskite films for superior PSCs, yet a systematic review of them is missing. Thus, a guide and summary of recent advances in modulating the perovskite films interface is necessary for the further development of more efficient interface modification.

关键词: perovskite solar cells, interfacial engineering, surface modulation, organic salt surface layer

Abstract: As the main distribution place of deep-level defects and the entrance of water, the interface is critical to determining both the power conversion efficiency (PCE) and the stability of perovskite solar cells (PSCs). Suitable interface design can dramatically passivate interface defects and optimize energy level alignment for suppressing the nonradiative recombination and effectively extracting the photogenerated carriers towards higher PCE. Meanwhile, a proper interface design can also block the interface diffusion of ions for high operational stability. Therefore, interface modification is of great significance to make the PSCs more efficient and stable. Upon optimized material choices, the three-dimensional halide perovskite graded junction layer, low-dimensional halide perovskite interface layer and organic salt passivation layer have been constructed on perovskite films for superior PSCs, yet a systematic review of them is missing. Thus, a guide and summary of recent advances in modulating the perovskite films interface is necessary for the further development of more efficient interface modification.

Key words: perovskite solar cells, interfacial engineering, surface modulation, organic salt surface layer

中图分类号:  (Other semiconductor-to-semiconductor contacts, p-n junctions, and heterojunctions)

  • 73.40.Lq
68.65.-k (Low-dimensional, mesoscopic, nanoscale and other related systems: structure and nonelectronic properties) 68.35.-p (Solid surfaces and solid-solid interfaces: structure and energetics) 81.05.Hd (Other semiconductors)