An experimental and first-principles study on band alignments at interfaces of Cu2ZnSnS4/CdS/ZnO heterojunctions

	An experimental and first-principles study on band alignments at interfaces of Cu2ZnSnS4/CdS/ZnO heterojunctions
	Dong Z. Y.; Li Y. F.; Yao B.; Ding Z. H.; Yang G.; Deng R.; Fang X.; Wei Z. P.; Liu L.
	2014
发表期刊	Journal of Physics D-Applied Physics
ISSN	ISBN/0022-3727
卷号	47 期号:7 页码:6
摘要	We investigated band offsets at Cu2ZnSnS4(CZTS)/CdS and CdS/ZnO interfaces in a typical CZTS/CdS/ZnO heterojunction solar cell by combining x-ray photoelectron spectroscopy and optical absorption spectroscopy as well as first-principles calculations. X-ray photoelectron spectroscopy and optical absorption spectroscopy measurements indicate that the conduction-band offsets at both CZTS/CdS and CdS/ZnO interfaces show type-II alignment with values of 0.13 eV and 1.00 eV, respectively, which are well supported by first-principles calculations based on the hybrid functional method. Our results suggest that, although type-II alignment for CZTS/CdS heterojunction can form less of a barrier to electron transport across the interfaces, the narrowing of the 'interface bandgap' increases recombination of carriers.
收录类别	SCI
语种	英语
文献类型	期刊论文
条目标识符	http://ir.ciomp.ac.cn/handle/181722/43725
专题	中科院长春光机所知识产出
推荐引用方式 GB/T 7714	Dong Z. Y.,Li Y. F.,Yao B.,et al. An experimental and first-principles study on band alignments at interfaces of Cu2ZnSnS4/CdS/ZnO heterojunctions[J]. Journal of Physics D-Applied Physics,2014,47(7):6.
APA	Dong Z. Y..,Li Y. F..,Yao B..,Ding Z. H..,Yang G..,...&Liu L..(2014).An experimental and first-principles study on band alignments at interfaces of Cu2ZnSnS4/CdS/ZnO heterojunctions.Journal of Physics D-Applied Physics,47(7),6.
MLA	Dong Z. Y.,et al."An experimental and first-principles study on band alignments at interfaces of Cu2ZnSnS4/CdS/ZnO heterojunctions".Journal of Physics D-Applied Physics 47.7(2014):6.

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