標題: Significant improvement in the thermoelectric properties of zwitterionic polysquaraine composite films
作者: Ho, Mei-Chan
Chao, Ching-Hsun
Lo, An-Ya
Chen, Chun-Hua
Wu, Ren-Jye
Tsai, Mei-Hui
Huang, Yi-Chia
Whang, Wha-Tzong
材料科學與工程學系
Department of Materials Science and Engineering
關鍵字: Polymer;Composite materials;Electrical conductivity;Thermoelectric effects
公開日期: 16-Sep-2013
摘要: In this study, the polysquaraine SQI(0.1), a zwitterionic pi-conjugated polymer, was adopted as the matrix for the preparation of flexible and freestanding films; the low band gap of this semiconducting polymer made it a natural choice for use as a thermoelectric (TE) polymer. To enhance their TE applications, both single-walled carbon nanotubes (SWNTs) and mesoporous carbon (i.e., CMK-3) were integrated into the SQI(0.1)-based films and the effects of doping with iodine were also investigated. Using scanning electron microscopy, the variations in morphology of these SQI(0.1)-based films were examined. Raman spectroscopy was used to study the pi-pi interactions between iodine and the carbon materials (Le., SWNT, CMK-3); X-ray diffraction and Raman spectroscopy to investigate the intercalation of the doped iodine in the composite films; and X-ray photoelectron spectroscopy to determine the valence state of the doped iodine. The TE properties of these materials were characterized in terms of the electrical conductivity (sigma), thermal conductivity (kappa), and Seebeck coefficient (S). The TE properties of the iodine-doped composite film prepared from SWNTs, CMK-3, and SQI(0.1) included a notable value of ZT (Figure of Merit) of 4.563 x 10(-3), which was 143% of that of the corresponding iodine-doped SQI(0.1) film. (c) 2013 Elsevier B.V. All rights reserved.
URI: http://dx.doi.org/10.1016/j.matchemphys.2013.06.024
http://hdl.handle.net/11536/22515
ISSN: 0254-0584
DOI: 10.1016/j.matchemphys.2013.06.024
期刊: MATERIALS CHEMISTRY AND PHYSICS
Volume: 141
Issue: 2-3
起始頁: 920
結束頁: 928
Appears in Collections:Articles


Files in This Item:

  1. 000323806600044.pdf