The influence of relative humidity upon Cu(In,Ga)Se2 thin-film surface chemistry: An X-ray photoelectron spectroscopy study

被引:11
|
作者
Bechu, Solene [1 ]
Bouttemy, Muriel [1 ]
Guillemoles, Jean-Francois [2 ]
Etcheberry, Arnaud [1 ]
机构
[1] Univ Paris Saclay, Univ Versailles St Quentin En Yvelines, Inst Lavoisier Versailles ILV, CNRS,UMR 8180, 45 Ave Etats Unis, F-78035 Versailles, France
[2] CNRS, UMR 9006, IPVF, 18 Blvd Thomas Gobert, F-91120 Palaiseau, France
关键词
Cu(In; Ga)(2); surfaces; Air ageing; X-ray photoemission spectroscopy; Relative humidity; SOLAR-CELLS; WATER; STABILITY; CU(IN; XPS; NA;
D O I
10.1016/j.apsusc.2021.151898
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
We performed a comprehensive study of Cu(In,Ga)Se-2 (CIGS) surface reactivity in air, focusing on the evolution of the surface chemistry via X-ray photoemission spectroscopy (XPS). By using the different transitions (photopeaks and X-ray Auger electron spectroscopy transitions) available on XPS spectra, in order to probe different surface thicknesses, complementary chemical information is provided to investigate the surface reactivity mechanism of CIGS surface and especially highlight the importance of the relative humidity rate of the atmosphere. Indeed, by maintaining a relative humidity of 20%, we demonstrate that this degradation can be limited, even almost stopped, showing that the degradation mechanism is not only related to O-2 interaction but more importantly, to the thin water layer, inherent to relative humidity, formed upon surfaces.
引用
收藏
页数:9
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