7.5% n-i-p Sb2Se3 solar cells with CuSCN as a hole-transport layer

被引：97

作者：

Li, Kanghua ^{[1
]}

Wang, Siyu ^{[1
]}

Chen, Chao ^{[1
]}

Kondrotas, Rokas ^{[1
]}

Hu, Manchen ^{[1
]}

Lu, Shuaicheng ^{[1
]}

Wang, Chong ^{[1
]}

Chen, Wei ^{[1
]}

Tang, Jiang ^{[1
]}

机构：

[1] Huazhong Univ Sci & Technol, Sargent Joint Res Ctr, WNLO, Sch Opt & Elect Informat, Wuhan 430074, Hubei, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2019年 / 7卷 / 16期

基金：

中国国家自然科学基金; 国家重点研发计划;

关键词：

EFFICIENCY; FILM;

D O I：

10.1039/c9ta01773a

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：

Sb2Se3 is a promising non-toxic, Earth-abundant, stable thin-film solar cell absorber material. However, the low built-in potential caused by the low intrinsic doping density (approximate to 10(13) cm(-3)) and the low carrier collection efficiency due to the low carrier mobility (approximate to 1.5 cm(2) V-1 s(-1)) hinder further efficiency improvement of Sb2Se3 solar cells. Therefore, an effective hole-transport layer (HTL) is necessary to further boost the built-in potential and assist carrier collection. Herein we attempt to improve the efficiency of Sb2Se3 solar cells by using CuSCN as an HTL. CuSCN as an HTL suppresses the back surface recombination, and enhances the built-in potential and carrier collection efficiency. Meanwhile, materials and physical properties characterization reveals that CuSCN provides Cu ions which induce grain boundary inversion, and therefore separate photo-generated carriers more efficiently. Consequently, we obtained a device efficiency of 7.50%.

引用

页码：9665 / 9672

页数：8

共 35 条

[1] Properties of Electrodeposited CuSCN 2D Layers and Nanowires Influenced by Their Mixed Domain Structure [J].

Aldakov, Dmitry ;

Chappaz-Gillot, Cyril ;

Salazar, Raul ;

Delaye, Vincent ;

Welsby, Kathryn A. ;

Ivanova, Valentina ;

Dunstan, Peter R. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2014, 118 (29) :16095-16103

[2]

[Anonymous], RRL

[3]

[Anonymous], INT PHOT OPT M POEM

[4]

[Anonymous], SOL RRL

[5] Perovskite solar cells with CuSCN hole extraction layers yield stabilized efficiencies greater than 20% [J].

Arora, Neha ;

Dar, M. Ibrahim ;

Hinderhofer, Alexander ;

Pellet, Norman ;

Schreiber, Frank ;

Zakeeruddin, Shaik Mohammed ;

Graetzel, Michael .

SCIENCE, 2017, 358 (6364) :768-771

[6] Microscopic insight into the origin of enhanced glass-forming ability of metallic melts on micro-alloying [J].

Chen, C. J. ;

Podlesnyak, A. ;

Mamontov, E. ;

Wang, W. H. ;

Chathoth, S. M. .

APPLIED PHYSICS LETTERS, 2015, 107 (13)

[7] Efficiency Improvement of Sb2Se3 Solar Cells via Grain Boundary Inversion [J].

Chen, Chao ;

Li, Kanghua ;

Chen, Shiyou ;

Wang, Liang ;

Lu, Shuaicheng ;

Liu, Yuhao ;

Li, Dengbing ;

Song, Haisheng ;

Tang, Jiang .

ACS ENERGY LETTERS, 2018, 3 (10) :2335-2341

[8] Accelerated Optimization of TiO2/Sb2Se3 Thin Film Solar Cells by High-Throughput Combinatorial Approach [J].

Chen, Chao ;

Zhao, Yang ;

Lu, Shuaicheng ;

Li, Kanghua ;

Li, Yang ;

Yang, Bo ;

Chen, Wenhao ;

Wang, Liang ;

Li, Dengbing ;

Deng, Hui ;

Yi, Fei ;

Tang, Jiang .

ADVANCED ENERGY MATERIALS, 2017, 7 (20)

[9] 6.5% Certified Efficiency Sb2Se3 Solar Cells Using PbS Colloidal Quantum Dot Film as Hole-Transporting Layer [J].

Chen, Chao ;

Wang, Liang ;

Gao, Liang ;

Nam, Dahyun ;

Li, Dengbing ;

Li, Kanghua ;

Zhao, Yang ;

Ge, Cong ;

Cheong, Hyeonsik ;

Liu, Huan ;

Song, Haisheng ;

Tang, Jiang .

ACS ENERGY LETTERS, 2017, 2 (09) :2125-2132

[10] Characterization of basic physical properties of Sb2Se3 and its relevance for photovoltaics [J].

Chen C. ;

Bobela D.C. ;

Yang Y. ;

Lu S. ;

Zeng K. ;

Ge C. ;

Yang B. ;

Gao L. ;

Zhao Y. ;

Beard M.C. ;

Tang J. .

Frontiers of Optoelectronics, 2017, 10 (01) :18-30

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