Interfacial-engineering enhanced performance and stability of ZnO nanowire-based perovskite solar cells.

Sun, Junlu; Li, Nengxu; Dong, Lin; Niu, Xiuxiu; Zhao, Mengqi; Xu, Ziqi; Zhou, Huanping; Shan, Chongxin; Pan, Caofeng

Sun, Junlu; Li, Nengxu; Dong, Lin; Niu, Xiuxiu; Zhao, Mengqi; Xu, Ziqi; Zhou, Huanping; Shan, Chongxin; Pan, Caofeng.

Afiliación

Sun J; Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, School of Physics and Microelectronics, Zhengzhou University, 450001, People's Republic of China.
Li N; CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People's Republic of China.
Dong L; Department of Materials Science and Engineering, Peking University, Beijing 100871, People's Republic of China.
Niu X; Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, School of Physics and Microelectronics, Zhengzhou University, 450001, People's Republic of China.
Zhao M; Department of Materials Science and Engineering, Peking University, Beijing 100871, People's Republic of China.
Xu Z; CAS Center for Excellence in Nanoscience, Beijing Key Laboratory of Micro-nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems, Chinese Academy of Sciences, Beijing 100083, People's Republic of China.
Zhou H; Department of Materials Science and Engineering, Peking University, Beijing 100871, People's Republic of China.
Shan C; Department of Materials Science and Engineering, Peking University, Beijing 100871, People's Republic of China.
Pan C; Henan Key Laboratory of Diamond Optoelectronic Materials and Devices, School of Physics and Microelectronics, Zhengzhou University, 450001, People's Republic of China.

Nanotechnology ; 32(47)2021 Sep 01.

Article en En | MEDLINE | ID: mdl-33445158

ABSTRACT

ABSTRACT

Perovskite solar cells (PSCs) have attracted extensive attention due to their convenient fabrication and excellent photoelectric characteristics. The highest power conversion efficiency (PCE) of over 25% has been realized. However, ZnO as electron transport layer based PSCs exhibit inferior PCE and stability because of the mismatched energy-band and undesirable interfacial recombination. Here, we introduce a thin layer of SnO2nanocrystals to construct an interfacial engineering with gradient energy band and interfacial passivation via a facile wet chemical process at a low temperature. The best PCE obtained in this study reaches 18.36%, and the stability is substantially improved and maintains a PCE of almost 100% over 500 h. The low-temperature fabrication process facilitates the future application of ZnO/SnO2-based PSCs in flexible and stretchable electronics.

Palabras clave

gradient energy band; interfacial passivation; perovskite solar cell; stability

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