Article ID Journal Published Year Pages File Type
7999499 Journal of Alloys and Compounds 2015 5 Pages PDF
Abstract
The band alignments at the interface of Cu2ZnSnS4 (CZTS)/ZnO heterojunction were determined by X-ray photoelectron spectroscopy. Core levels of S2p and O1s were used to align the valence-band offset (VBO). The VBO was determined to be 1.78 ± 0.10 eV, and the conduction-band offset (CBO) was deduced to be 0.09 ± 0.10 eV, implying that the CZTS/ZnO heterojunction has a type-I band alignment. Furthermore, first-principles calculations based on hybrid functional method also indicate that the CZTS/ZnO interface has a type-I band alignment, well supporting our experimental results.
Related Topics
Physical Sciences and Engineering Materials Science Metals and Alloys
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