Tuning the thermal conductivity of strontium titanate through annealing treatments

Strontium titanate（SrTiO3） is a promising n-type material for thermoelectric applications. However, its relatively high thermal conductivity limits its performance in efficiently converting heat into electrical power through thermoelectric effect.This work shows that the thermal conductivity of SrTi...

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Published inChinese physics B Vol. 26; no. 1; pp. 357 - 362
Main Author 张喨 李宁 王惠琼 张宇锋 任飞 廖霞霞 李亚平 王小丹 黄政 戴扬 鄢浩 郑金成
Format Journal Article
LanguageEnglish
Published 2017
Subjects
X射线吸收精细结构
傅里叶变换红外光谱
扫描电子显微镜
热导率
热电材料
第一性原理计算
退火处理
钛酸锶
Online AccessGet full text
ISSN1674-1056
2058-3834
DOI10.1088/1674-1056/26/1/016602

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Abstract Strontium titanate（SrTiO3） is a promising n-type material for thermoelectric applications. However, its relatively high thermal conductivity limits its performance in efficiently converting heat into electrical power through thermoelectric effect.This work shows that the thermal conductivity of SrTiO3 can be effectively reduced by annealing treatments, through an integrated study of laser flash measurement, scanning electron microscopy, Fourier transform infrared spectroscopy, x-ray absorption fine structure, and first-principles calculations. A phonon scattering model is proposed to explain the reduction of thermal conductivity after annealing. This work suggests a promising means to characterize and optimize the material for thermoelectric applications.
AbstractList Strontium titanate（SrTiO3） is a promising n-type material for thermoelectric applications. However, its relatively high thermal conductivity limits its performance in efficiently converting heat into electrical power through thermoelectric effect.This work shows that the thermal conductivity of SrTiO3 can be effectively reduced by annealing treatments, through an integrated study of laser flash measurement, scanning electron microscopy, Fourier transform infrared spectroscopy, x-ray absorption fine structure, and first-principles calculations. A phonon scattering model is proposed to explain the reduction of thermal conductivity after annealing. This work suggests a promising means to characterize and optimize the material for thermoelectric applications.
Author 张喨 李宁 王惠琼 张宇锋 任飞 廖霞霞 李亚平 王小丹 黄政 戴扬 鄢浩 郑金成
AuthorAffiliation Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics, Xiamen University, Xiamen 361005, China Fujian Provincial Key Laboratory of Mathematical Modeling and High-Performance Scientific Computation, Xiamen 361005, China Xiamen University Malaysia, Sepang, Selangor 439000, Malaysia Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China
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Notes Liang Zhang1,Ning Li1,Hui-Qiong Wang1,3,Yufeng Zhang1,Fei Ren1,Xia-Xia Liao1,Ya-Ping Li1,Xiao-Dan Wang1,Zheng Huang1,Yang Dai4,Hao Yan4,Jin-Cheng Zheng1,2,3（ 1.Collaborative Innovation Center for Optoelectronic Semiconductors and Efficient Devices, Department of Physics, Xiamen University, Xiamen 361005, China; 2. Fujian Provincial Key Laboratory of Mathematicai Modeling and High-Performance Scientific Computation, Xiamen 361005, China; 3. Xiamen University Malaysia, Sepang, Selangor 439000, Malaysia; 4.Department of Chemical Engineering, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, China）
Strontium titanate（SrTiO3） is a promising n-type material for thermoelectric applications. However, its relatively high thermal conductivity limits its performance in efficiently converting heat into electrical power through thermoelectric effect.This work shows that the thermal conductivity of SrTiO3 can be effectively reduced by annealing treatments, through an integrated study of laser flash measurement, scanning electron microscopy, Fourier transform infrared spectroscopy, x-ray absorption fine structure, and first-principles calculations. A phonon scattering model is proposed to explain the reduction of thermal conductivity after annealing. This work suggests a promising means to characterize and optimize the material for thermoelectric applications.
11-5639/O4
thermal conductivity; SrTiO3; annealing; phonon scattering
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Snippet Strontium titanate（SrTiO3） is a promising n-type material for thermoelectric applications. However, its relatively high thermal conductivity limits its...
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SubjectTerms X射线吸收精细结构
傅里叶变换红外光谱
扫描电子显微镜
热导率
热电材料
第一性原理计算
退火处理
钛酸锶
Title Tuning the thermal conductivity of strontium titanate through annealing treatments
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