中国物理B ›› 2019, Vol. 28 ›› Issue (4): 48802-048802.doi: 10.1088/1674-1056/28/4/048802

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

Effect of carrier mobility on performance of perovskite solar cells

Yi-Fan Gu(顾一帆), Hui-Jing Du(杜会静), Nan-Nan Li(李楠楠), Lei Yang(杨蕾), Chun-Yu Zhou(周春宇)   

  1. Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China
  • 收稿日期:2018-11-07 修回日期:2019-01-31 出版日期:2019-04-05 发布日期:2019-04-05
  • 通讯作者: Hui-Jing Du, Chun-Yu Zhou E-mail:Hjdu@ysu.edu.cn;zhouchunyu@ysu.edu.cn
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant No. 61704147) and the Science Fund from the Education Department of Hebei Province, China (Grant No. QN2017150).

Effect of carrier mobility on performance of perovskite solar cells

Yi-Fan Gu(顾一帆), Hui-Jing Du(杜会静), Nan-Nan Li(李楠楠), Lei Yang(杨蕾), Chun-Yu Zhou(周春宇)   

  1. Key Laboratory for Microstructural Material Physics of Hebei Province, School of Science, Yanshan University, Qinhuangdao 066004, China
  • Received:2018-11-07 Revised:2019-01-31 Online:2019-04-05 Published:2019-04-05
  • Contact: Hui-Jing Du, Chun-Yu Zhou E-mail:Hjdu@ysu.edu.cn;zhouchunyu@ysu.edu.cn
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant No. 61704147) and the Science Fund from the Education Department of Hebei Province, China (Grant No. QN2017150).

摘要:

The high carrier mobility and long diffusion length of perovskite material have been regarded because of its excellent photovoltaic performance. However, many studies have shown that a diffusion length longer than 1 μ and higher carrier mobility have no positive effect on the cells' performance. Studies of organic solar cells have demonstrated the existence of an optimal mobility value, while systematic research of the carrier mobility in the PSCs is very rare. To make these questions clear, the effect of carrier mobility on perovskite solar cells' performance is studied in depth in this paper by simulation. Our study shows that the optimal mobility value of the charge transportation layer and absorption layer are influenced by both doping concentration and layer thickness. The appropriate carrier mobility can reduce the carrier recombination rate and enhance the carrier concentration, thus improving the cells' performance. A high efficiency of 27.39% is obtained in the simulated cell with the combination of the optimized parameters in the paper.

关键词: perovskite solar cells, device simulation, carrier mobility, photovoltaic performance

Abstract:

The high carrier mobility and long diffusion length of perovskite material have been regarded because of its excellent photovoltaic performance. However, many studies have shown that a diffusion length longer than 1 μ and higher carrier mobility have no positive effect on the cells' performance. Studies of organic solar cells have demonstrated the existence of an optimal mobility value, while systematic research of the carrier mobility in the PSCs is very rare. To make these questions clear, the effect of carrier mobility on perovskite solar cells' performance is studied in depth in this paper by simulation. Our study shows that the optimal mobility value of the charge transportation layer and absorption layer are influenced by both doping concentration and layer thickness. The appropriate carrier mobility can reduce the carrier recombination rate and enhance the carrier concentration, thus improving the cells' performance. A high efficiency of 27.39% is obtained in the simulated cell with the combination of the optimized parameters in the paper.

Key words: perovskite solar cells, device simulation, carrier mobility, photovoltaic performance

中图分类号:  (Solar cells (photovoltaics))

  • 88.40.H-
88.40.hj (Efficiency and performance of solar cells) 88.40.fc (Modeling and analysis)