Surface Science p. 1075 - 1080 (1991)
Update date:2022-08-30
Topics:
Soriano, L.
Galan, L.
Rueda, F.
The oxidation of alkali-metal (Cs, K) tellurides at room temperature and low oxygen pressure has been studied by X-ray photoelectron and Auger electron spectroscopies (XPS, XAES). The oxidation kinetics is faster than logarithmic and does not saturate for the exposures studied, while a migration of alkali ions to the surface is detected. These effects are strongly enhanced in a sample of overcaesiated telluride with elemental Te clusters on the surface. A strong gradient of the oxidation state (Te2-, Te0, Te4+, Te6+) is formed in a depth of the order of the XPS analysis depth. The oxygen concentration shows a similar gradient. Cs2O2 is formed too. The surface layer remains as Cs2Te; the Te clusters also remain unreactive at the surface; they only transform into telluride when heavy oxidation of the Cs2Te film is reached.
Haitong Chemical Industrial Co.,Ltd.
website:https://www.haitonglongwin.com/
Contact:+86-022-66221018
Address:18-701, No.99, The 4th Street, TEDA,
Zhejiang Chemicals Import & Export Corporation
Contact:86-571-87043088
Address:No.37,Qingchun Road,Hangzhou,China
Shanghai Sinofluoro Scientific Co., Ltd
Contact:+86-21-64279360
Address:Room 1006,Building 3,#58 East Xinjian Road, Shanghai ,201100,China,
Contact:18669908765
Address:Zibo City, Shandong Province, P.R.China
Luoyang Aoda chemical Co.,Ltd.
Contact:+86-379-67518785 67516588
Address:MiaoWan industry district,YanShi City,Henan,China
Doi:10.1016/j.tetlet.2020.152081
(2020)Doi:10.1002/cssc.201100259
(2011)Doi:10.1021/ic900260u
(2009)Doi:10.1002/chem.201302025
(2013)Doi:10.1021/jo982442n
(1999)Doi:10.1016/j.jallcom.2020.154104
(2020)
