Band alignment of BiOCl/ZnO core shell nanosheets by X-ray photoelectron spectroscopy measurements

被引：4
|
作者：
Guo, Liang [1 ]
Xiao, Youcheng [2 ]
Xu, Zhikun [3 ]
Lin, Shuang-Yan [3 ]
Wang, Huan [2 ]
Chu, Xuefeng [2 ]
Gao, Xiaohong [2 ]
Zhou, Lu [2 ]
Chi, Yaodan [2 ]
Yang, Xiaotian [1 ,2 ]
机构：
[1] Jilin Jianzhu Univ, Dept Basic Sci, Jilin Prov Key Lab Architectural Elect & Comprehe, Changchun, Jilin, Peoples R China
[2] Jilin Jianzhu Univ, Sch Elect Engn & Comp, Jilin Prov Key Lab Architectural Elect & Comprehe, Changchun, Peoples R China
[3] Harbin Normal Univ, Harbin, Heilongjiang, Peoples R China
来源：
FERROELECTRICS | 2018年 / 531卷 / 01期
基金：
中国国家自然科学基金;
关键词：
BiOCl; ZnO; band offset; X-ray photoelectron spectroscopy (XPS); atomic layer deposition (ALD); LIGHT PHOTOCATALYTIC ACTIVITY; HETEROJUNCTION; ZNO; ACTIVATION;
D O I：
10.1080/00150193.2018.1392782
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
To improve optoelectronic properties of bismuth oxyhalides, hybrid BiOX photocatalytic materials have draw a great attention, because of the separation of photogenerated electron-hole pairs. The band offset and band alignments are considered as the key parameters to elaborate carrier transport properties in heterojunction. In this paper, to determine the band alignment of BiOCl and ZnO heterostructure, BiOCl/ZnO core shell nanosheets with different thickness of shell layer were synthesized. The valence band offset (VBO or E-V) of BiOCl/ZnO heterostructure was determined using X-ray Photoelectron Spectroscopy measurements. The E-V value of 0.294 +/- 0.10eV was calculated by using the Zn 2p(3/2), Bi 4f(5/2) binding energies as references. Taking the band gaps of 3.37eV and 3.4eV for ZnO and BiOCl samples into consideration, respectively, we obtained the type-II band alignment of BiOCl/ZnO heterostructure with a conduction band offset (CBO or Ec) of 0.324 +/- 0.10eV.
引用
收藏
页码：31 / 37
页数：7
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