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Organic thin film transistor by using polymer electrolyte to modulate the conductivity of conjugated polymer

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7 Author(s)
Lin, Yu-Ju ; Institute of Microelectronics, National Cheng Kung University, Tainan 701, Taiwan; Department of Electrical Engineering, National Cheng Kung University, Tainan 701, Taiwan; and Advanced Optoelectronic Technology Center, National Cheng Kung University, Tainan 701, Taiwan ; Li, Yu-Chang ; Yeh, Chih-Chieh ; Chung, Sheng-Feng
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This work presents an organic thin film transistor using double polymer layers, polymer electrolyte/conjugated polymer, i.e., poly(diallyldimethylammonium chloride) (PDDA)/poly(diphenylamine) (PDPA) structure. The single mobile anions (Cl-) pending on the PDDA are stuffed into the conjugated polymer to dope the nitrogen atoms (imine) by applying the gate bias, resulting a higher drain current under the same source-drain voltage. The PDDA/PDPA polymer structure working in the enhancement mode which operates under atmospheric conditions as a typical p-channel transistor is demonstrated.

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Applied Physics Letters  (Volume:89 ,  Issue: 22 )