Thermoelectric power enhancement of PEDOT:PSS in high-humidity conditions
2014; Institute of Physics; Volume: 7; Issue: 3 Linguagem: Inglês
10.7567/apex.7.031601
ISSN1882-0786
AutoresQingshuo Wei, Masakazu Mukaida, Kazuhiro Kirihara, Yasuhisa Naitoh, Takao Ishida,
Tópico(s)Advanced Battery Materials and Technologies
ResumoWe report an increase in the thermoelectric power factor of poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) from 23 ± 5 to 225 ± 130 µW/(m·K2) in high-humidity conditions. This enhancement was caused mainly by an increase in the apparent Seebeck coefficient, which could be related to morphological change after water absorption or electrochemical reaction of PEDOT in air. Our results demonstrate a positive effect of water in the PEDOT:PSS system and indicate the need for well-controlled measurement conditions, particularly humidity, in evaluating the performance of conducting organic materials.
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