Stable 6%-efficient Sb2Se3 solar cells with a ZnO buffer layer

被引：537

作者：

Wang, Liang ^{[1
,2
]}

Li, Deng-Bing ^{[1
,2
]}

Li, Kanghua ^{[1
,2
]}

Chen, Chao ^{[1
,2
]}

Deng, Hui-Xiong ^{[3
]}

Gao, Liang ^{[1
,2
]}

Zhao, Yang ^{[1
,2
]}

Jiang, Fan ^{[1
,2
]}

Li, Luying ^{[1
,2
]}

Huang, Feng ^{[4
]}

He, Yisu ^{[1
,2
]}

Song, Haisheng ^{[1
,2
]}

Niu, Guangda ^{[1
,2
]}

Tang, Jiang ^{[1
,2
]}

机构：

[1] Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect WNLO, Wuhan 430074, Peoples R China

[2] Huazhong Univ Sci & Technol, Sch Opt & Elect Informat, Wuhan 430074, Peoples R China

[3] Chinese Acad Sci, Inst Semicond, State Key Lab Superlattices & Microstruct, POB 912, Beijing 100083, Peoples R China

[4] Sun Yat Sen Univ, Sch Mat Sci & Engn, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China

来源：

NATURE ENERGY | 2017年 / 2卷 / 04期

基金：

中国国家自然科学基金;

关键词：

OPEN-CIRCUIT VOLTAGE; THIN-FILMS; QUANTUM; 1V;

D O I：

10.1038/nenergy.2017.46

中图分类号：

TE [石油、天然气工业]; TK [能源与动力工程];

学科分类号：

0807 ; 0820 ;

摘要：

Sb2Se3, a binary compound containing non-toxic and Earth-abundant constituents, is a promising absorber material for low-cost, high-efficiency photovoltaics. Current Sb2Se3 thin-film solar cells use toxic CdS as the buffer layer and suffer from unsatisfactory stability. Here we selected ZnO as the buffer layer and constructed superstrate Sb2Se3 solar cells with a certified power conversion efficiency of 5.93%. Randomly oriented ZnO produced by spray pyrolysis induced the growth of Sb2Se3 with preferred [221] orientation, and hence resulted in devices with fewer interfacial defects and better efficiency. Moreover, our unencapsulated device survived the stringent damp-heat (85 degrees C, 85% humidity, 1,100 h), light-soaking (50 degrees C, 1.3 sun, 1,100 h), thermal cycling, and ultraviolet preconditioning tests. The combined features of stability, Earth-abundant constituent and potentially low-cost manufacturing highlight the great potential of Sb2Se3 solar cell as a possible non-toxic alternative to CdTe photovoltaics.

引用

页数：9

共 39 条

[1] Improved Current Extraction from ZnO/PbS Quantum Dot Heterojunction Photovoltaics Using a MoO3 Interfacial Layer [J].