SrTi0.8Nb0.2O3/Au纳米复合薄膜的制备及热电性能

doi:10.3969/j.issn.1000-1565.2017.04.004SrTi<sub>0.8</sub>Nb<sub>0.2</sub>O<sub>3</sub>/Au纳米复合薄膜的制备及热电性能

河北大学学报(自然科学版) ›› 2017, Vol. 37 ›› Issue (4): 355-359.DOI: 10.3969/j.issn.1000-1565.2017.04.004SrTi_0.8Nb_0.2O₃/Au纳米复合薄膜的制备及热电性能

SrTi_0.8Nb_0.2O₃/Au纳米复合薄膜的制备及热电性能

郭双,付念,吴晓琳,王江龙,王淑芳

收稿日期:2017-01-14 出版日期:2017-07-25 发布日期:2017-07-25
通讯作者: 王江龙(1974—),男,河北保定人,河北大学教授,主要从事氧化物热电材料研究. E-mail:jlwang@hbu.edu.cn
作者简介:郭双(1990—),男,河北秦皇岛人,河北大学在读硕士研究生. E-mail:550865230@qq.com 〓通信作者:王江龙(1974—),男,河北保定人,河北大学教授,主要从事氧化物热电材料研究. E-mail:jlwang@hbu.edu.cn
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;E2017201209);河北省教育厅基金资助项目(ZD2014018;QN2017017)

Fabrication and thermoelectric properties of the SrTi_0.8Nb_0.2O₃ /Au nanocomposite thin films

GUO Shuang,FU Nian,WU Xiaolin, WANG Jianglong, WANG Shufang

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

Received:2017-01-14 Online:2017-07-25 Published:2017-07-25

摘要/Abstract

摘要： 利用脉冲激光沉积技术制备了SrTi_0.8Nb_0.2O₃/Au纳米复合热电薄膜并研究了Au纳米颗粒的含量对薄膜热电性能的影响.实验结果表明,随着薄膜中Au纳米颗粒含量的增加,复合薄膜的载流子浓度和迁移率同时减小,导致复合薄膜的电阻率增大;此外,随着Au纳米颗粒含量的增加,复合薄膜的塞贝克系数绝对值因载流子浓度的增大及Au和SrTi_0.8Nb_0.2O₃界面势垒的能量过滤效应而增大.当Au原子百分比为0.94%时,复合薄膜的功率因子达到最大值,表明少量的纳米Au颗粒掺入可以有效地提升SrTi_0.8Nb_0.2O₃薄膜的热电性能.

关键词: 脉冲激光沉积, 纳米复合薄膜, 热电性能

Abstract: In this work, SrTi_0.8Nb_0.2O₃/Au nanocomposite thin films were fabricated by pulsed laser deposition(PLD)method, and the effect of Au nanoparticles content on the thermoelectric properties of the films were investigated.With the increase of Au nanoparticles content, the electrical resistivity of the films increases due to the decreased carrier concentration and mobility.The absolute value of Seebeck coefficient of the films is also found to increase with the Au nanoparticles content, which is mainly caused by the increased carrier concentration and the carrier energy filtering effect of the interface barrier between Au and SrTi_0.8Nb_0.2O₃.The film sample with Au nanoparticles content of 0.94% has the best power factor, indicating that the incorporation of a small amount of Au nanoparticles can improve the thermoelectric performance of SrTi_0.8Nb_0.2O₃ thin films.

Key words: pulsed laser deposition, nanocomposite thin films, thermoelectric properties

中图分类号:

O469

郭双,付念,吴晓琳,王江龙,王淑芳. SrTi_0.8Nb_0.2O₃/Au纳米复合薄膜的制备及热电性能[J]. 河北大学学报(自然科学版), 2017, 37(4): 355-359.

GUO Shuang,FU Nian,WU Xiaolin, WANG Jianglong, WANG Shufang. Fabrication and thermoelectric properties of the SrTi_0.8Nb_0.2O₃ /Au nanocomposite thin films[J]. Journal of Hebei University (Natural Science Edition), 2017, 37(4): 355-359.

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SrTi_0.8Nb_0.2O₃/Au纳米复合薄膜的制备及热电性能

Fabrication and thermoelectric properties of the SrTi_0.8Nb_0.2O₃ /Au nanocomposite thin films

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