CuInTe2-xSx(x=0,0.05,0.1,0.15)固溶体的热电性能

类金刚石结构化合物CuInTe_2作为一种新型的热电材料引起了广泛关注。CuInTe_2在中低温度段热导偏大,限制了其热电性能的提高。本研究合成了CuInTe_(2-x)S_x(x=0,0.05,0.1,0.15)固溶体,XRD和SEM-EDS结果表明所得固溶体均为元素分布均匀的单一物相。同时还发现S和Te元素的固溶有效地引入了点缺陷散射,降低了晶格热导率。通过Callaway模型模拟实验数据发现应力场涨落引起的声子散射是其晶格热导率降低的主要原因,但Te位固溶S引起了电输运性能的降低,若能采用掺杂等方式改善电性能,则其热电性能有望得到进一步优化。...

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Veröffentlicht in:无机材料学报 2017, Vol.32 (11), p.1171-1176
Hauptverfasser: 覃玉婷, 仇鹏飞, 史迅, 陈立东
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container_issue 11
container_start_page 1171
container_title 无机材料学报
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creator 覃玉婷
仇鹏飞
史迅
陈立东
description 类金刚石结构化合物CuInTe_2作为一种新型的热电材料引起了广泛关注。CuInTe_2在中低温度段热导偏大,限制了其热电性能的提高。本研究合成了CuInTe_(2-x)S_x(x=0,0.05,0.1,0.15)固溶体,XRD和SEM-EDS结果表明所得固溶体均为元素分布均匀的单一物相。同时还发现S和Te元素的固溶有效地引入了点缺陷散射,降低了晶格热导率。通过Callaway模型模拟实验数据发现应力场涨落引起的声子散射是其晶格热导率降低的主要原因,但Te位固溶S引起了电输运性能的降低,若能采用掺杂等方式改善电性能,则其热电性能有望得到进一步优化。
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subjects 应力场涨落
晶格热导
热电
类金刚石结构
title CuInTe2-xSx(x=0,0.05,0.1,0.15)固溶体的热电性能
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