publication . Article . 2015

Microscopic hole-transfer efficiency in organic thin-film transistors studied with charge-modulation spectroscopy

Miyata, Kiyoshi; Tanaka, Shunsuke; Ishino, Yuuta; Watanabe, Kazuya; Uemura, Takafumi; Takeya, Jun; Sugimoto, Toshiki; Matsumoto, Yoshiyasu;
Open Access English
  • Published: 08 May 2015 Journal: Physical Review B, volume 91, issue 19 (issn: 1098-0121, Copyright policy)
  • Publisher: American Physical Society
Abstract
While the microscopic transfer properties of carriers are of primary importance for carrier transport of organic semiconductors, the mesoscopic features including the morphologies of grains and the structure of grain boundaries limit the overall carrier transport particularly in polycrystalline organic thin films. Thus the conventional evaluation methods of carrier mobility that rely on macroscopic properties such as I−V curves of devices are not capable to determine carrier transfer probability at the molecular level. Here, we present a method for evaluating the relative strengths of transfer integrals using charge-modulation spectroscopy on thin-film transisto...
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Article . 2015
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