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Raman and Visible-Near Infrared Spectra of Cu(InGa)Se-2 Films
Xu Dong-mei1; Pan Kun1; Liu Xu-wei1; Wang Xue-jin1; Wang Wen-zhong2; Liang Chun-jun3; Wang Zhi2
2016-10-01
发表期刊SPECTROSCOPY AND SPECTRAL ANALYSIS
ISSN1000-0593
卷号36期号:10页码:3197-3201
摘要

Cu(InxGa1-x)Se-2 (GIGS) precursor films were prepared on ITO glass with potentiostatic electrodeposition. High quality CIGS films were obtained by selenization of the precursor films at high temperature in tubular furnace full of argon gas. X-ray diffraction (XRD), scanning electron microscopy (SEM) and UV-Vis-NIR spectroscopy were used to characterize the structure, morphology, composition and Vis-NIR absorption of CIGS films, respectively. XRD results show the selenized CIGS films have a preferential orientation (112) with average crystallite of 24. 7 nm. Raman spectroscopy reveals that the CIGS films are pure quaternaryphases with chalcopyrite structure, and without binary or ternary phases in the films. Vis-NIR measurements determine that the bandgap of CIGS increases with the increase of Ga concentration in the film. When the Ga concentration is 5. 41%, its bandgap is about 1. 11 eV, and the calculated ratio of Ga to (Ga+In) is 16. 3%, which is less than the ratio of Ga to (Ga+In), 21. 4%, measured by SEM. This indicates that crystallinity of CIGS filmsneeds to be further improved. All the measurements demonstratethat optimum ITO/CIGS has a promising application in bifacial solar cells. In this paper, we provide a newmethodtoelectrodeposit low cost CIGS precursor films and a new method forselenization ofthe precursor films at high temperature. As a result, theuniform and compact CIGS films with good adhesion on ITO are successfully fabricated by these methods. The above characterization show that we have obtained CIGS films with high crystallinity, near stoichiometry, few impurity phases and superior light absorption. Electrodeposition, like magnetron sputtering, is very suitable for large-scale industrial production. The research work in this paper is therefore important and considerable to massive production of electrodeposition of CIGS films.

关键词Cigs Thin Films Raman Vis-nir Spectra
文章类型Article
WOS标题词Science & Technology ; Technology
DOI10.3964/j.issn.1000-0593(2016)10-3197-05
收录类别SCI
语种英语
关键词[WOS]CIGS SOLAR-CELLS ; LAYER ; FABRICATION
WOS研究方向Spectroscopy
WOS类目Spectroscopy
WOS记录号WOS:000385475500021
引用统计
文献类型期刊论文
条目标识符http://ir.ipe.ac.cn/handle/122111/21558
专题多相复杂系统国家重点实验室
作者单位1.China Agr Univ, Coll Sci, Beijing 100083, Peoples R China
2.Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
3.Beijing Jiaotong Univ, Sch Sci, Beijing 100044, Peoples R China
推荐引用方式
GB/T 7714
Xu Dong-mei,Pan Kun,Liu Xu-wei,et al. Raman and Visible-Near Infrared Spectra of Cu(InGa)Se-2 Films[J]. SPECTROSCOPY AND SPECTRAL ANALYSIS,2016,36(10):3197-3201.
APA Xu Dong-mei.,Pan Kun.,Liu Xu-wei.,Wang Xue-jin.,Wang Wen-zhong.,...&Wang Zhi.(2016).Raman and Visible-Near Infrared Spectra of Cu(InGa)Se-2 Films.SPECTROSCOPY AND SPECTRAL ANALYSIS,36(10),3197-3201.
MLA Xu Dong-mei,et al."Raman and Visible-Near Infrared Spectra of Cu(InGa)Se-2 Films".SPECTROSCOPY AND SPECTRAL ANALYSIS 36.10(2016):3197-3201.
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