(001)-oriented Cu2-ySe thin films with tunable thermoelectric performances grown by pulsed laser deposition

被引：19

作者：

Lv, Yanhong ^{[1
,2
,3
]}

Chen, Jikun ^{[2
]}

Zheng, Ren-Kui ^{[1
]}

Shi, Xun ^{[1
,2
]}

Song, Junqiang ^{[2
]}

Zhang, Tiansong ^{[2
]}

Li, Xiaomin ^{[1
]}

Chen, Lidong ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China

[2] Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Mat Energy Convers, Shanghai 200050, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

来源：

CERAMICS INTERNATIONAL | 2015年 / 41卷 / 06期

基金：

中国国家自然科学基金;

关键词：

Cu2-ySe thin films; Electrical transport; Phase transition; Thermoelectric; COPPER SELENIDE; SYSTEM;

D O I：

10.1016/j.ceramint.2015.02.062

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Highly (001)-oriented Cu2-ySe thin films with tunable thermoelectric performances have been grown by pulsed laser deposition. By using targets with different Cu/Se ratios that further determines the copper deficiency of as-grown films, the carrier concentrations of as-grown films are tuned within a broad range from 10(18) to 10(21) cm(-3). The optimum performance is observed at carrier concentration similar to 1.58 x 10(20) cm(-3). The distinct properties of Cu2-ySe thin films with nearly ideal chemical stoichiometric ratio are observed. In addition, a weak change in the electrical transport during the second-order phase transition was observed in the thin films due to the anisotropic structure of the Cu2-ySe. (C) 2015 Elsevier Ltd and Techna Group S.r.l. All rights reserved.

引用

页码：7439 / 7445

页数：7