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PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE · 2016 ·Vol. 213 ·期 5 ·1324-1328 · IF 1.648

A facile non-vacuum-based Cu2ZnSnSe4 superstrate solar cell with 2.44% device efficiency

Yongzheng Zhang,Yuxiu Sun,Hao Wang,Hui Yan

Cu 2 ZnSnSe 4 (CZTSe) solar cell with a facile superstrate structure of carbon/CZTSe/CdS/ITO was fabricated entirely by non-vacuum processes. The influence of selenization temperature on the composition of CZTSe layer was briefly investigated. Compared with current superstrate-type CZTS(e) solar cells, the present CZTSe superstrate solar cell exhibited a higher power conversion efficiency of 2.44%.

研究领域: 材料科学 · 光伏技术 · 无机半导体 · 能源材料 · 薄膜器件

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PHYSICAL CHEMISTRY CHEMICAL PHYSICS · 2020 ·Vol. 22 ·期 17 ·9362-9367 · IF 3.43

Unveiling the atomic defects and electronic structure of Cu2.2Zn0.8SnSe4−xTex (x = 0 to 0.04) by X-ray absorption fine structure spectroscopy

Weifeng Huang,Yingcai Zhu,Yong Liu,Lijuan Liu,Changchun Yang,Wei Xu

The quaternary chalcogenides consisting of earth-abundant elements such as Cu2ZnSnSe4 (CZTSe) have promising electrical and optical properties prompting enormous technological interest. Understanding different types of defects including Cu/Zn ordering is believed to be the key point to tackle technological challenges such as a large open circuit voltage deficit in CZTSe. The Te doped Cu2.2Zn0.8SnSe4−xTex (x = 0.01–0.04) were investigated using X-ray absorption fine structure spectroscopy at the Cu, Zn, and Se K-edges as well as at the Te L3-edge. Cu at the zinc site with anti-site defects and oxygen interstitials are identified. The detailed electronic structure upon Te doping is studied, providing insights into the rich defect chemistry present in this compound.

研究领域: 材料科学 · 凝聚态物理 · 无机化学 · 半导体材料 · 光电功能材料

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A facile non-vacuum-based Cu2ZnSnSe4 superstrate solar cell with 2.44% device efficiency

Unveiling the atomic defects and electronic structure of Cu2.2Zn0.8SnSe4−xTex (x = 0 to 0.04) by X-ray absorption fine structure spectroscopy