Enhanced thermoelectric properties of germanium powder/poly(3,4- ethylenedioxythiophene):poly(4-styrenesulfonate) composites

Gyeong Ock Park, Jong Wook Roh, Jeongmin Kim, Kang Yeol Lee, Byungjin Jang, Kyu Hyoung Lee, Wooyoung Lee

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We herein report on the enhanced thermoelectric properties of poly(3,4-ethylenedioxythiophene):poly(4-styrenesulfonate) (PEDOT:PSS)/Ge composite films fabricated by drop-casting of a solution of Ge powder in PEDOT:PSS. The power factor of the fabricated PEDOT:PSS/Ge composite films with 29.6 wt.% Ge was 165 μW m- 1K- 2, and they exhibited an extremely low thermal conductivity. The maximum thermoelectric figure of merit was anticipated to be ∼ 0.1 at room temperature for the PEDOT:PSS/Ge composite films with 29.6 wt.% Ge, suggesting that their heterostructure was effective in enhancing their thermoelectric efficiency.

Original languageEnglish
Pages (from-to)14-18
Number of pages5
JournalThin Solid Films
Publication statusPublished - 2014 Sep 1


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Materials Chemistry

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