Efficient planar heterojunction perovskite solar cells with Li-doped compact TiO2 layer

被引：255

作者：

Liu, Detao ^{[1
,2
]}

Li, Shibin ^{[1
,2
]}

Zhang, Peng ^{[1
,2
]}

Wang, Yafei ^{[1
,2
]}

Zhang, Rui ^{[1
,2
]}

Sarvari, Hojjatollah ^{[3
,4
]}

Wang, Feng ^{[1
,2
,3
,4
]}

Wu, Jiang ^{[5
]}

Wang, Zhiming ^{[6
]}

Chen, Zhi David ^{[1
,2
,3
,4
]}

机构：

[1] Univ Elect Sci & Technol China, State Key Lab Elect Thin Films & Integrated Devic, Chengdu 610054, Sichuan, Peoples R China

[2] Univ Elect Sci & Technol China, Sch Optoelect Informat, Chengdu 610054, Sichuan, Peoples R China

[3] Univ Kentucky, Dept Elect & Comp Engn, Lexington, KY 40506 USA

[4] Univ Kentucky, Ctr Nanoscale Sci & Engn, Lexington, KY 40506 USA

[5] UCL, Dept Elect & Elect Engn, Torrington Pl, London WC1E 7JE, England

[6] Univ Elect Sci & Technol China, Inst Fundamental & Frontier Sci, Chengdu 610054, Peoples R China

来源：

NANO ENERGY | 2017年 / 31卷

基金：

中国国家自然科学基金;

关键词：

Li-doping TiO2; Planar heterojunction perovskite solar cells; Less-; hysteresis; CH3NH3PbI3; STABILITY ENHANCEMENT; PERFORMANCE; HYSTERESIS; CH3NH3PBI3; FILMS;

D O I：

10.1016/j.nanoen.2016.11.028

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Perovskite solar cells (PSCs) have been developed rapidly in recent time, and efficient planar PSCs are regarded as the most promising alternative to the Si solar cells. In this study, we demonstrated that Li-doping of compact TiO2 can reduce the density of electron traps and increase the conductivity of the electron transport layer (ETL) of PSCs. Due to the improved electronic property of ETL, the Li-doped compact TiO2 based planar heterojunction PSCs exhibit negligible hysteretic J-V behavior. Comparing with the undoped compact TiO2 based PSCs, the power conversion efficiency (PCE) of the Li-doped compact TiO2 film based PSCs is improved from 14.2% to 17.1%. Fabrication of highly efficient planar PSCs provides a pathway for commercialization of PSCs.

引用

页码：462 / 468

页数：7

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