Cu2-xGeS3: a new hole transporting material for stable and efficient perovskite solar cells

被引：21

作者：

Jin, Xin ^{[1
]}

Lei, Xunyong ^{[2
]}

Wu, Chunyan ^{[1
]}

Jiang, Guoshun ^{[1
]}

Liu, Weifeng ^{[1
]}

Zeng, Hualing ^{[2
]}

Chen, Tao ^{[1
]}

Zhu, Changfei ^{[1
]}

机构：

[1] Univ Sci & Technol China, Chinese Acad Sci, Dept Mat Sci & Engn, Key Lab Mat Energy Convers, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China

[2] Univ Sci & Technol China, CAS Key Lab Strongly coupled Quantum Matter Phys, ICQD, Hefei Natl Lab Phys Sci Microscale, 96 Jinzhai Rd, Hefei 230026, Anhui, Peoples R China

来源：

JOURNAL OF MATERIALS CHEMISTRY A | 2017年 / 5卷 / 37期

基金：

中国国家自然科学基金;

关键词：

HALIDE PEROVSKITES; STABILITY; CONDUCTIVITY; CU2ZNSNS4; LIGHT; LAYER; OXIDE;

D O I：

10.1039/c7ta06088b

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：

Cu2-xGeS3 is a kind of inorganic semiconducting compound with earth abundant elemental storage, excellent chemical stability and environmentally friendly characteristics. It has been used as a light absorption material in traditional p-n junction thin film solar cells. This research presents that Cu2-xGeS3 can also serve as a highly efficient hole transporting material for perovskite solar cells with enhanced stability. The results show that perovskite solar cells based on the Cu2-xGeS3 film can retain 95% power conversion efficiency when exposed to 50% relative humidity for 30 days in air under room lamp light irradiation, while the device using spiro-OMeTAD as the hole transporting material degrades considerably in 2 days and nearly completely degrades in 10 days. Mechanistic investigation shows that the inherent stability and hydrophobic nature of the Cu2-xGeS3 film contribute to the enhanced moisture stability. This investigation provides a material choice for high-efficiency perovskite solar cells with enhanced moisture stability.

引用

页码：19884 / 19891

页数：8

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