PROBING DEPTH OF ULTRAVIOLET PHOTOELECTRON YIELD SPECTROSCOPY IN HYDROCARBON FILMS

被引:15
作者
MONJUSHIRO, H
WATANABE, I
机构
[1] Department of Chemistry, Faculty of Science, Osaka University, Osaka, Toyonaka
关键词
PHOTOELECTRON EMISSION; ESCAPE DEPTH; SELF-ASSEMBLED MONOLAYER; ALKYLMERCAPTANE; GOLD;
D O I
10.2116/analsci.11.797
中图分类号
O65 [分析化学];
学科分类号
070302 ; 081704 ;
摘要
In order to clarify the probing depth of ultraviolet photoelectron yield spectroscopy, the escape depth (L) of photoelectrons with kinetic energy (E(k)) lower than 1.5 eV in hydrocarbon films was determined by using self-assembled monolayers of n-alkylmercaptane adsorbed on gold. The yield of photoelectrons from the gold substrate decreased exponentially as the chain length of n-alkylmercaptane increased. The L was 1.0+/-0.1 nm for electrons with E(k) lower than 0.3 eV, and increased to 3.0+/-0.9 nm for electrons with the maximum E(k) Of 1.5 eV.
引用
收藏
页码:797 / 800
页数:4
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