中国物理B ›› 2022, Vol. 31 ›› Issue (10): 108801-108801.doi: 10.1088/1674-1056/ac7292

• INTERDISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY • 上一篇    下一篇

Device simulation of quasi-two-dimensional perovskite/silicon tandem solar cells towards 30%-efficiency

Xiao-Ping Xie(谢小平)1,†, Qian-Yu Bai(白倩玉)2,†, Gang Liu(刘刚)1, Peng Dong(董鹏)1, Da-Wei Liu(刘大伟)1, Yu-Feng Ni(倪玉凤)1, Chen-Bo Liu(刘晨波)2, He Xi(习鹤)2, Wei-Dong Zhu(朱卫东)2, Da-Zheng Chen(陈大正)2,‡, and Chun-Fu Zhang(张春福)2   

  1. 1. Qinghai Huanghe Hydropower Development CO., LTD., Xining 810008, China;
    2. State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, Xidian University, Xi'an 710071, China
  • 收稿日期:2022-03-02 修回日期:2022-05-10 出版日期:2022-10-16 发布日期:2022-09-24
  • 通讯作者: Da-Zheng Chen E-mail:dzchen@xidian.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 62004151, 62274126, 62274126, 61874083, and 61804113) and the China Postdoctoral Science Foundation (Grant No. 2020T130490).

Device simulation of quasi-two-dimensional perovskite/silicon tandem solar cells towards 30%-efficiency

Xiao-Ping Xie(谢小平)1,†, Qian-Yu Bai(白倩玉)2,†, Gang Liu(刘刚)1, Peng Dong(董鹏)1, Da-Wei Liu(刘大伟)1, Yu-Feng Ni(倪玉凤)1, Chen-Bo Liu(刘晨波)2, He Xi(习鹤)2, Wei-Dong Zhu(朱卫东)2, Da-Zheng Chen(陈大正)2,‡, and Chun-Fu Zhang(张春福)2   

  1. 1. Qinghai Huanghe Hydropower Development CO., LTD., Xining 810008, China;
    2. State Key Discipline Laboratory of Wide Band Gap Semiconductor Technology, Xidian University, Xi'an 710071, China
  • Received:2022-03-02 Revised:2022-05-10 Online:2022-10-16 Published:2022-09-24
  • Contact: Da-Zheng Chen E-mail:dzchen@xidian.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 62004151, 62274126, 62274126, 61874083, and 61804113) and the China Postdoctoral Science Foundation (Grant No. 2020T130490).

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摘要： Perovskite/silicon (Si) tandem solar cells have been recognized as the next-generation photovoltaic technology with efficiency over 30% and low cost. However, the intrinsic instability of traditional three-dimensional (3D) hybrid perovskite seriously hinders the lifetimes of tandem devices. In this work, the quasi-two-dimensional (2D) (BA)2(MA)n-1PbnI3n+1 (n=1, 2, 3, 4, 5) (where MA denotes methylammonium and BA represents butylammonium), with senior stability and wider bandgap, are first used as an absorber of semitransparent top perovskite solar cells (PSCs) to construct a four-terminal (4T) tandem devices with a bottom Si-heterojunction cell. The device model is established by Silvaco Atlas based on experimental parameters. Simulation results show that in the optimized tandem device, the top cell (n=4) obtains a power conversion efficiency (PCE) of 17.39% and the Si bottom cell shows a PCE of 11.44%, thus an overall PCE of 28.83%. Furthermore, by introducing a 90-nm lithium fluoride (LiF) anti-reflection layer to reduce the surface reflection loss, the current density (Jsc) of the top cell is enhanced from 15.56 mA/cm2 to 17.09 mA/cm2, the corresponding PCE reaches 19.05%, and the tandem PCE increases to 30.58%. Simultaneously, in the cases of n=3, 4, and 5, all the tandem PCEs exceed the limiting theoretical efficiency of Si cells. Therefore, the 4T quasi-2D perovskite/Si devices provide a more cost-effective tandem strategy and long-term stability solutions.

关键词: two-dimensional, device simulation, antireflection layers, tandem solar cells

Abstract: Perovskite/silicon (Si) tandem solar cells have been recognized as the next-generation photovoltaic technology with efficiency over 30% and low cost. However, the intrinsic instability of traditional three-dimensional (3D) hybrid perovskite seriously hinders the lifetimes of tandem devices. In this work, the quasi-two-dimensional (2D) (BA)2(MA)n-1PbnI3n+1 (n=1, 2, 3, 4, 5) (where MA denotes methylammonium and BA represents butylammonium), with senior stability and wider bandgap, are first used as an absorber of semitransparent top perovskite solar cells (PSCs) to construct a four-terminal (4T) tandem devices with a bottom Si-heterojunction cell. The device model is established by Silvaco Atlas based on experimental parameters. Simulation results show that in the optimized tandem device, the top cell (n=4) obtains a power conversion efficiency (PCE) of 17.39% and the Si bottom cell shows a PCE of 11.44%, thus an overall PCE of 28.83%. Furthermore, by introducing a 90-nm lithium fluoride (LiF) anti-reflection layer to reduce the surface reflection loss, the current density (Jsc) of the top cell is enhanced from 15.56 mA/cm2 to 17.09 mA/cm2, the corresponding PCE reaches 19.05%, and the tandem PCE increases to 30.58%. Simultaneously, in the cases of n=3, 4, and 5, all the tandem PCEs exceed the limiting theoretical efficiency of Si cells. Therefore, the 4T quasi-2D perovskite/Si devices provide a more cost-effective tandem strategy and long-term stability solutions.

Key words: two-dimensional, device simulation, antireflection layers, tandem solar cells

中图分类号:  (Solar cells (photovoltaics))

  • 88.40.H-
88.40.J- (Types of solar cells) 88.40.hj (Efficiency and performance of solar cells)