Improve the n-type performance in organic heterojunction transistors by controlling thickness of copper phthalocyanine

Jianlin Zhou, Xiaoqing Shen, Zhen Wang, Shengdong Hu, Wei Huang, Xinge Yu, Ping Gan

Research output: Contribution to journalArticlepeer-review

3 Scopus citations

Abstract

N-type C60 thin film transistors with heterojunction were fabricated by introducing copper phthalocyanine (CuPc) modifying layer between polymer dielectrics and C60 semiconductor. Comparing with conventional organic thin film transistors (OTFTs) based on single C60 layer, such devices can not only boost the electron mobility up to 3 times, but also well control threshold voltage VT and off current Ioff by optimizing CuPc thickness. The performance improvement can be attributed to the increase of free electron carriers by the dipole effect at the C60/CuPc interface, and better C60 film quality grown upon CuPc.

Original languageEnglish (US)
Article number20102
JournalEPJ Applied Physics
Volume70
Issue number2
DOIs
StatePublished - May 1 2015

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics

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