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ICCAS OpenIR  > 分子纳米结构与纳米技术实验室  > 期刊论文
题名: GeSe Thin-Film Solar Cells Fabricated by Self-Regulated Rapid Thermal Sublimation
作者: Xue, Ding-Jiang1, 3; Lui, Shun-Chang1, 3; Dai, Chen-Min2; Chen, Shiyou2; He, Chao1, 3; Zhao, Lu1, 3; Hu, Jin-Song1, 3; Wan, Li-Jun1, 3
刊名: JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
发表日期: 2017-01-18
卷: 139, 期:2, 页:958-965
收录类别: SCI
英文摘要: GeSe has recently emerged as a promising photovoltaic absorber material due to its attractive optical and electrical properties as well as earth-abundant and low-toxic constituent elements. However, no photovoltaic device has been reported based on this material so far, which could be attributed to the inevitable coexistence of phase impurities Ge and GeSe2, leading to detrimental recombiriation-center defects and seriously degrading the device performance. Here we overcome this issue by introducing a simple and fast (4.8 mu m min(-1)) rapid thermal sublimation (RTS) process designed according to the sublimation feature of the layered structured GeSe. This new method offers a compelling combination of assisting raw material purification to suppress deleterious phase impurities and preventing the formation of detrimental point defects through congruent sublimation of GeSe, thus providing an in situ self-regulated process to fabricate high quality polycrystalline GeSe films. Solar cells fabricated following this process show a power Conversion efficiency of 1.48% with good stability. This preliminary efficiency and high stability; combined with the self-regulated RTS process (also extended to the fabrication of other binary IV-VI chalcogenide films, i.e., GeS), demonstrates the great potential of GeSe for thin-film photovoltaic applications.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/36547
Appears in Collections:分子纳米结构与纳米技术实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, Key Lab Mol Nanostruct & Nanotechnol, Beijing Natl Lab Mol Sci, Beijing 100190, Peoples R China
2.East China Normal Univ, Key Lab Polar Mat & Devices MOE, Shanghai 200241, Peoples R China
3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
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