Mn4+掺杂对CdO多晶电、热输运性能的影响

doi:10.3969/j.issn.1000-1565.2017.02.002

河北大学学报(自然科学版) ›› 2017, Vol. 37 ›› Issue (2): 117-122.DOI: 10.3969/j.issn.1000-1565.2017.02.002

Mn⁴⁺掺杂对CdO多晶电、热输运性能的影响

刘冉,葛大勇,高琳洁,査欣雨,王江龙

收稿日期:2016-08-10 出版日期:2017-03-25 发布日期:2017-03-25
通讯作者: 王江龙(1974—),男,河北保定人,河北大学教授,主要从事热电氧化物研究.E-mail:jlwang@hbu.edu.cn葛大勇(1975—),男,河北保定人,河北大学副教授,主要从事热电氧化物研究.Email:1427249386@qq.com
作者简介:刘冉(1991—),女,河北邯郸人,河北大学在读硕士研究生. E-mail:liuran2921@163.com
基金资助:
国家自然科学基金资助项目(51372064);河北省自然科学基金资助项目(A2014201176);河北大学研究生创新项目(X2015062)

High-temperature electric and thermal transport properties of CdO doped with Mn⁴⁺

LIU Ran,GE Dayong,GAO Linjie,ZHA Xinyu,WANG Jianglong

College of Physics Science and Technology, Hebei University, Baoding 071002, China

Received:2016-08-10 Online:2017-03-25 Published:2017-03-25

摘要/Abstract

摘要： 利用固相烧结法制备了Cd_1-xMn_xO(x=0、0.1%、0.3%、0.5%、0.7%)多晶块体样品并研究了Mn⁴⁺掺杂对CdO多晶高温电、热输运性能的影响.实验发现,随着Mn⁴⁺掺杂量的增加,样品的载流子浓度和迁移率同时增大,导致其电阻率降低、塞贝克系数变大; Mn⁴⁺掺杂虽然可以降低CdO的声子热导率κ_p,但因为电子热导率κ_e的大幅上升从而使样品的总热导率κ 升高.本研究结果为CdO热电性能的进一步调控及优化提供了基础.

关键词: CdO, Mn⁴⁺掺杂, 电输运, 热输运

Abstract: Cd_1-xMn_xO(x=0,0.1%,0.3%,0.5%,0.7%)ceramics were synthesized by the conventional solid state reaction method and its electric and thermal transport were both studied.With the increasing of Mn⁴⁺-doping,both the carrier concentration and the mobility of Cd_1-xMn_xO measured at room temperature increase,which leads to the significant decrease of the resistivity and increase of Seebeck coefficient S. In spite of the Mn⁴⁺-doping can effectively reduce the phonon thermal conductivity,the total thermal conductivity increases due to the electronic thermal conductivity increase with growing Mn⁴⁺-doping.

Key words: CdO, Mn⁴⁺doping, electric transport, thermal transport

中图分类号:

O469

刘冉,葛大勇,高琳洁,査欣雨,王江龙. Mn⁴⁺掺杂对CdO多晶电、热输运性能的影响[J]. 河北大学学报(自然科学版), 2017, 37(2): 117-122.

LIU Ran,GE Dayong,GAO Linjie,ZHA Xinyu,WANG Jianglong. High-temperature electric and thermal transport properties of CdO doped with Mn⁴⁺[J]. Journal of Hebei University (Natural Science Edition), 2017, 37(2): 117-122.

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Mn⁴⁺掺杂对CdO多晶电、热输运性能的影响

High-temperature electric and thermal transport properties of CdO doped with Mn⁴⁺

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