Fabrication of iodine-doped pentacene thin films for organic thermoelectric devices

K. Hayashi, T. Shinano, Y. Miyazaki, T. Kajitani

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)


We investigate the relation between the morphology and thermoelectric properties of iodine-doped pentacene thin films grown on the glass substrate. The electrical conductivity and thermoelectric power factor are enhanced with decreasing the film thickness and growth temperature due to the volumetric increase in the thin film phase relative to the bulk phase in the film. The 115 and 190 nm thin films grown at room temperature, whose majority phase is the thin film phase, exhibit high power factor of 1.3× 10-5 W m-1 K-2. Also, we demonstrate an improved stability of thermoelectric properties by covering the iodine-doped film with a polyimide tape.

Original languageEnglish
Article number023712
JournalJournal of Applied Physics
Issue number2
Publication statusPublished - 2011 Jan 15


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