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A Computational Approach toward the Enhanced Performance of Graphene–Perovskite Schottky Solar Cells
Author(s) -
Lin Lingyan,
Jiang Linqin,
Li Ping,
Li Xiaoyan,
Qiu Yu
Publication year - 2020
Publication title -
energy technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.91
H-Index - 44
eISSN - 2194-4296
pISSN - 2194-4288
DOI - 10.1002/ente.201901197
Subject(s) - schottky barrier , perovskite (structure) , ohmic contact , graphene , materials science , optoelectronics , doping , heterojunction , schottky diode , planar , perovskite solar cell , work function , solar cell , metal–semiconductor junction , energy conversion efficiency , nanotechnology , chemistry , layer (electronics) , computer science , diode , computer graphics (images) , crystallography
Herein, a device modeling of graphene–perovskite Schottky junction solar cells is conducted by AFORS‐HET package. It is found that the back and front contact work function (WF) and the absorber doping concentration have important effects on cell performance. The front contact with a high WF of 5.4 eV is suggested to form the desired Schottky junction, which contributes to better efficiency. Back contact WF lower than 4.2 eV is desired to form ohmic contact. Appropriate doping concentration (10 16 cm −3 ) of perovskite favors the efficiency improvement. Under the optimal conditions, the graphene–perovskite Schottky solar cells can obtain a conversion efficiency up to 21.13%, but at a lower cost and much simpler structure comparable with the planar heterojunction perovskite solar cells. These results can provide guidance for further performance improvement of perovskite‐based Schottky solar cells.