TY  - JOUR
TI  - Thermoelectric Properties of ex-situ PTH/PEDOT Composites
AB  - A thermoelectric material can convert temperature difference into electrical potential difference. Today, intensive researches are being carried out in order to use flexible, non-toxic and inexpensive conductive polymers instead of hard, hard-to-shape, expensive and toxic semiconductor metals used as thermoelectric materials. Among the conductive polymers investigated for this purpose, poly(3,4-ethylenedioxythiophene) (PEDOT) is the most promising. However, its thermoelectric properties alone are not sufficient. Thermoelectric properties can be increased by incorporating nanoparticles in inorganic, organic or polymeric structures into conductive polymers. In this study firstly, PTh was synthesized with and without magnetic field by oxidative polymerization in aqueous media in the presence of poly(sulfonic acid diphenyl aniline). Secondly, PEDOT was synthesized with and without magnetic field in aqueous media by oxidative polymerization. Then, ex-situ PTH/PEDOT composites were obtained with different ratios of PTh/PEDOT. Particle sizes of polymers were measured and their FTIR and UV-vis. spectra were taken. Seebeck coefficient and electrical conductivity were measured from thin films of polymers. Power factor values were calculated. It was found that the Seebeck coefficients of PTh and ex-situ PTH/PEDOT composites increased with magnetic field. The highest Seebeck coefficient and power factor of PEDOTs were obtained from PEDOT synthesized without magnetic field as 1683.3 µV/K and 98.2 µW/mK2, respectively. The highest Seebeck coefficient and power factor of ex-situ PTh/PEDOT composites were obtained from (PTh/PEDOT3)m synthesized with magnetic field as 400 µV/K and 0.1 µW/mK2, respectively.
AU  - Huner, Azra
DO  - 10.35414/akufemubid.934570
PY  - 2021
JO  - Afyon Kocatepe Üniversitesi Fen ve Mühendislik Bilimleri Dergisi
VL  - 21
IS  - 4
SN  - 2149-3367
SP  - 783
EP  - 791
DB  - TRDizin
UR  - http://search/yayin/detay/453764
ER  -