Influence of charge carrier injection at emitter electrode/emitter interface on the performance of metal-base organic transistors

Pentacene-based metal-base organic transistors (MBOTs) are fabricated. The influence of the charge carrier injection efficiency at the emitter electrode/emitter interface on the device performance is investigated. It is found that the current modulation and the on/off ratio increase with the injecti...

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Bibliographic Details
Published inOptoelectronics letters Vol. 6; no. 3; pp. 195 - 198
Main Authors Zhao, Kai, Deng, Jia-chun, Cheng, Xiao-man, Wu, Xiao-ming, Yang, Li-ying, Hua, Yu-lin, Wei, Jun, Yin, Shou-gen
Format Journal Article
LanguageEnglish
Published Heidelberg Tianjin University of Technology 01.05.2010
Subjects
Lasers
Optical Devices
Optics
Photonics
Physics
Physics and Astronomy
Pentacene
Organic Thin Film Transistor
Current Gain
Current Modulation
Injection Efficiency
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Summary:Pentacene-based metal-base organic transistors (MBOTs) are fabricated. The influence of the charge carrier injection efficiency at the emitter electrode/emitter interface on the device performance is investigated. It is found that the current modulation and the on/off ratio increase with the injection efficiency. By inserting poly(3,4-ethylenedioxythiophene) (PEDOT): PSS/m-MTDATA layers at the emitter electrode/emitter interface, the current modulation and the on/off ratio reach 6.7 mAcm −2 and 23, respectively. Meanwhile, the current gain is 95–96 in our experiment, which is almost independent on the injection efficiency.
ISSN:1673-1905
1993-5013
DOI:10.1007/s11801-010-9271-8