Lower work function of thermoelectric material by ordered arrays

In this paper, PbTe nanocubes are assembled on Bi0.5Sb1.5Te3 substrates with both ordered and disordered structures through a straightforward method to form a P-N section. The work function of such semiconductor system is then measured by the ultraviolet photoelectron spectroscopy. This results show...

Full description

Saved in:
Bibliographic Details
Published in:Science China. Chemistry 2016-10, Vol.59 (10), p.1264-1269
Main Authors: Liu, Gang, Xue, Zhenjie, Xu, Guiying, Yan, Cong, Wang, Tie
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Chemistry/Food Science
Intermetallic compounds
PbTe
Photoelectrons
Substrates
Surface roughness
Thermoelectric materials
Work functions
功函数
导体系统
有序结构
有序阵列
热电材料
紫外光电子能谱
表面粗糙度
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:In this paper, PbTe nanocubes are assembled on Bi0.5Sb1.5Te3 substrates with both ordered and disordered structures through a straightforward method to form a P-N section. The work function of such semiconductor system is then measured by the ultraviolet photoelectron spectroscopy. This results show that the work function of orderly arrayed PbTe deposition is much lower than the disordered assemblies. Such change of the work function provides the possibility to tune it in a P-N section system. The change of the work function is attributed to the less surface roughness and easier electron escaping in the ordered structures.
ISSN:1674-7291
1869-1870
DOI:10.1007/s11426-016-0097-3