Thermoelectric characteristics of nanocomposites made of HgSe and Ag nanoparticles for flexible thermoelectric devices
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- 作者：Junggwon Yun ; Kyoungah Cho ; Yoonbeom Park ; Seunggen Yang ; Jinyong Choi…
- 关键词：HgSe ; Ag2Se ; nanoparticles ; nanocomposite ; flexible thermoelectric ; Seebeck
- 刊名：Nano Research
- 出版年：2017
- 出版时间：February 2017
- 年：2017
- 卷：10
- 期：2
- 页码：683-689
- 全文大小：
- 刊物类别：Chemistry and Materials Science
- 刊物主题：Nanotechnology; Materials Science, general; Atomic/Molecular Structure and Spectra; Condensed Matter Physics; Biotechnology; Biomedicine, general;
- 出版者：Tsinghua University Press
- ISSN：1998-0000
- 卷排序：10
文摘
We synthesized thermoelectric nanocomposites by mixing HgSe nanoparticles (NPs) and Ag NPs in a solution and investigated the thermoelectric properties of the nanocomposite thin films on flexible plastic substrates. The X-ray diffraction patterns and the X-ray photoelectron spectra of the nanocomposites demonstrate that cation-exchange reactions occurred spontaneously in the mixed solution of HgSe and Ag NPs and that the HgSe NPs were completely converted to Ag2Se when the Ag NP content was 20 vol.%. The maximum power factor and the thermoelectric figure of merit were obtained as 75 μW/mK2 and 0.043 at 300 K, respectively, when the Ag NP content was 10 vol.%, which is 100 times higher than that of HgSe NP thin films. In addition, the mechanical stability of the thermoelectric nanocomposite film was confirmed through repeated bending tests.