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Effects of P3HT concentration on the performance of organic field effect transistors

  • Chun Xia Jiang
  • , Xiao Man Cheng
  • , Xiao Ming Wu
  • , Xiao Yan Yang
  • , Bin Yin
  • , Yu Lin Hua
  • , Jun Wei
  • , Shou Gen Yin*
  • *Corresponding author for this work
  • Tianjin University of Technology
  • Agency for Science, Technology and Research, Singapore

Research output: Contribution to journalArticlepeer-review

Abstract

Top-contact organic field effect transistors (OFETs) based on poly(3-hexylthiophene) (P3HT) with different concentrations in chloroform (CHCl3) are fabricated. The output characteristics indicate that the P3HT concentration has significant influence on the OFET devices. The performance of the devices firstly is enhanced with increasing the P3HT concentration, and then decreases. The optimized devices with the P3HT concentration of 2 mg/mL show the best performance. The field effect mobility is up to 1.4×10-2 cm2/Vs, the threshold voltage (Vt) is as low as -20 V, and the current on/off ratio (Ion/off) is close to the order of 104. The results suggest that the P3HT aggregation patterns induced by different concentrations can improve the performance of the OFETs.

Original languageEnglish
Pages (from-to)30-32
Number of pages3
JournalOptoelectronics Letters
Volume7
Issue number1
DOIs
StatePublished - Jan 2011
Externally publishedYes

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