异质结
材料科学
晶体生长
光电子学
化学
化学工程
结晶学
纳米技术
工程类
作者
Hao Yuan,T. Tiedje,Jingye Chen,Hui Wang,Brad Aitchison,Pawan Kumar,Yuxin Song
出处
期刊:Journal of vacuum science and technology
[American Vacuum Society]
日期:2024-01-01
卷期号:42 (1)
摘要
Polished Cd0.9Zn0.1Te (CZT) single crystals have been exposed to dilute H2S in nitrogen at temperatures from 200 to 280 °C in order to produce a sulfide layer on the surface. The composition of the CZT surfaces before and after H2S exposure has been investigated by photoemission, x-ray absorption, cross-sectional SEM, and spectroscopic ellipsometry. At the highest temperature, H2S exposure removes surface oxides and depletes Te, leaving a CdS surface layer. CdS layers 60 nm thick have been grown with a 2 h exposure to H2S at 280 °C. Surfaces that are initially oxidized through ozone exposure are much more reactive with H2S than unintentionally oxidized surfaces.
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