Highly efficient bifacial semitransparent perovskite solar cells based on molecular doping of CuSCN hole transport layer

doi:10.1088/1674-1056/ab99ae

中国物理B ›› 2020, Vol. 29 ›› Issue (7): 78801-078801.doi: 10.1088/1674-1056/ab99ae

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

Highly efficient bifacial semitransparent perovskite solar cells based on molecular doping of CuSCN hole transport layer

1 Institute of Photoelectronic Thin Film Devices and Technology of Nankai University, Tianjin 300350, China;
2 Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Tianjin 300350, China;
3 Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin 300072, China;
4 Renewable Energy Conversion and Storage Center of Nankai University, Tianjin 300072, China;
5 Engineering Research Center of Thin Film Photoelectronic Technology, Ministry of Education, Tianjin 300350, China

收稿日期:2020-02-05 修回日期:2020-05-19 出版日期:2020-07-05 发布日期:2020-07-05
通讯作者: Pengyang Wang, Xiaodan Zhang E-mail:pywang@nankai.edu.cn;xdzhang@nankai.edu.cn
基金资助:
Project supported by the National Key Research and Development Program of China (Grant No. 2018YFB1500103), the National Natural Science Foundation of China (Grant No. 61674084), the Overseas Expertise Introduction Project for Discipline Innovation of Higher Education of China (Grant No. B16027), and the Science and Technology Project of Tianjin, China (Grant No. 18ZXJMTG00220).

Highly efficient bifacial semitransparent perovskite solar cells based on molecular doping of CuSCN hole transport layer

Shixin Hou(侯世欣)^1,2,3,4,5, Biao Shi(石标)^1,2,3,4,5, Pengyang Wang(王鹏阳)^1,2,3,4,5, Yucheng Li(李玉成)^1,2,3,4,5, Jie Zhang(张杰)^1,2,3,4,5, Peirun Chen(陈沛润)^1,2,3,4,5, Bingbing Chen(陈兵兵)^1,2,3,4,5, Fuhua Hou(侯福华)^1,2,3,4,5, Qian Huang(黄茜)^1,2,3,4,5, Yi Ding(丁毅)^1,2,3,4,5, Yuelong Li(李跃龙)^1,2,3,4,5, Dekun Zhang(张德坤)^1,2,3,4,5, Shengzhi Xu(许盛之)^1,2,3,4,5, Ying Zhao(赵颖)^1,2,3,4,5, Xiaodan Zhang(张晓丹)^1,2,3,4,5

1 Institute of Photoelectronic Thin Film Devices and Technology of Nankai University, Tianjin 300350, China;
2 Key Laboratory of Photoelectronic Thin Film Devices and Technology of Tianjin, Tianjin 300350, China;
3 Collaborative Innovation Center of Chemical Science and Engineering(Tianjin), Tianjin 300072, China;
4 Renewable Energy Conversion and Storage Center of Nankai University, Tianjin 300072, China;
5 Engineering Research Center of Thin Film Photoelectronic Technology, Ministry of Education, Tianjin 300350, China

Received:2020-02-05 Revised:2020-05-19 Online:2020-07-05 Published:2020-07-05
Contact: Pengyang Wang, Xiaodan Zhang E-mail:pywang@nankai.edu.cn;xdzhang@nankai.edu.cn
Supported by:
Project supported by the National Key Research and Development Program of China (Grant No. 2018YFB1500103), the National Natural Science Foundation of China (Grant No. 61674084), the Overseas Expertise Introduction Project for Discipline Innovation of Higher Education of China (Grant No. B16027), and the Science and Technology Project of Tianjin, China (Grant No. 18ZXJMTG00220).

摘要/Abstract

摘要： Coper thiocyanate (CuSCN) is generally considered as a very hopeful inorganic hole transport material (HTM) in semitransparent perovskite solar cells (ST-PSCs) because of its low parasitic absorption, high inherent stability, and low cost. However, the poor electrical conductivity and low work function of CuSCN lead to the insufficient hole extraction and large open-circuit voltage loss. Here, 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ) is employed to improve conductivity of CuSCN and band alignment at the CuSCN/perovskite (PVK) interface. As a result, the average power conversion efficiency (PCE) of PSCs is boosted by ≈ 11%. In addition, benefiting from the superior transparency of p-type CuSCN HTMs, the prepared bifacial semitransparent n-i-p planar PSCs demonstrate a maximum efficiency of 14.8% and 12.5% by the illumination from the front side and back side, respectively. We believe that this developed CuSCN-based ST-PSCs will promote practical applications in building integrated photovoltaics and tandem solar cells.

关键词: perovskite solar cell, CuSCN, inorganic hole transport layer, organic doping, semitransparent solar cell

Abstract: Coper thiocyanate (CuSCN) is generally considered as a very hopeful inorganic hole transport material (HTM) in semitransparent perovskite solar cells (ST-PSCs) because of its low parasitic absorption, high inherent stability, and low cost. However, the poor electrical conductivity and low work function of CuSCN lead to the insufficient hole extraction and large open-circuit voltage loss. Here, 2,3,5,6-tetrafluoro-7,7,8,8-tetracyanoquinodimethane (F4TCNQ) is employed to improve conductivity of CuSCN and band alignment at the CuSCN/perovskite (PVK) interface. As a result, the average power conversion efficiency (PCE) of PSCs is boosted by ≈ 11%. In addition, benefiting from the superior transparency of p-type CuSCN HTMs, the prepared bifacial semitransparent n-i-p planar PSCs demonstrate a maximum efficiency of 14.8% and 12.5% by the illumination from the front side and back side, respectively. We believe that this developed CuSCN-based ST-PSCs will promote practical applications in building integrated photovoltaics and tandem solar cells.

Key words: perovskite solar cell, CuSCN, inorganic hole transport layer, organic doping, semitransparent solar cell

中图分类号: (Solar cells (photovoltaics))

88.40.H-

88.40.hj (Efficiency and performance of solar cells)

侯世欣, 石标, 王鹏阳, 李玉成, 张杰, 陈沛润, 陈兵兵, 侯福华, 黄茜, 丁毅, 李跃龙, 张德坤, 许盛之, 赵颖, 张晓丹. Highly efficient bifacial semitransparent perovskite solar cells based on molecular doping of CuSCN hole transport layer[J]. 中国物理B, 2020, 29(7): 78801-078801.

Shixin Hou(侯世欣), Biao Shi(石标), Pengyang Wang(王鹏阳), Yucheng Li(李玉成), Jie Zhang(张杰), Peirun Chen(陈沛润), Bingbing Chen(陈兵兵), Fuhua Hou(侯福华), Qian Huang(黄茜), Yi Ding(丁毅), Yuelong Li(李跃龙), Dekun Zhang(张德坤), Shengzhi Xu(许盛之), Ying Zhao(赵颖), Xiaodan Zhang(张晓丹). Highly efficient bifacial semitransparent perovskite solar cells based on molecular doping of CuSCN hole transport layer[J]. Chin. Phys. B, 2020, 29(7): 78801-078801.

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Highly efficient bifacial semitransparent perovskite solar cells based on molecular doping of CuSCN hole transport layer

Highly efficient bifacial semitransparent perovskite solar cells based on molecular doping of CuSCN hole transport layer

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