High performance pentacene organic field-effect transistors consisting of biocompatible PMMA/silk fibroin bilayer dielectric

Pentacene organic field-effect transistors （OFETs） based on single- or double-layer biocompatible dielectrics of poly（methyl methacrylate） （PMMA） and/or silk fibroin （SF） are fabricated. Compared with those devices based on sin- gle PMMA or SF dielectric or SF/PMMA bilayer dielectric, the OFETs with...

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Published in:Chinese physics B 2014-03, Vol.23 (3), p.636-639
Main Author: 李海强 于军胜 黄伟 施薇 黄江
Format: Article
Language:English
Subjects:
Biocompatibility
Dielectrics
Field effect transistors
Pentacene
Performance enhancement
Polymethyl methacrylates
Semiconductor devices
Silk fibroin
丝素蛋白
并五苯
最佳性能
有机场效应晶体管
生物相容性
电介质
聚甲基丙烯酸甲酯
聚（甲基丙烯酸甲酯）
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description Pentacene organic field-effect transistors （OFETs） based on single- or double-layer biocompatible dielectrics of poly（methyl methacrylate） （PMMA） and/or silk fibroin （SF） are fabricated. Compared with those devices based on sin- gle PMMA or SF dielectric or SF/PMMA bilayer dielectric, the OFETs with biocompatible PMMA/SF bilayer dielectric exhibit optimal performance with a high field-effect mobility of 0.21 cm2/Vs and a current on/off ratio of 1.5 × 104. By investigating the surface morphology of the pentacene active layer through atom force microscopy and analyzing the elec- trical properties, the performance enhancement is mainly attributed to the crystallization improvement of the pentacene and the smaller interface trap density at the dielectric/organic interface. Meanwhile, a low contact resistance also indicates that a good electrode/organic contact is formed, thereby assisting the performance improvement of the OFET.
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source Institute of Physics
subjects Biocompatibility
Dielectrics
Field effect transistors
Pentacene
Performance enhancement
Polymethyl methacrylates
Semiconductor devices
Silk fibroin
丝素蛋白
并五苯
最佳性能
有机场效应晶体管
生物相容性
电介质
聚甲基丙烯酸甲酯
聚（甲基丙烯酸甲酯）
title High performance pentacene organic field-effect transistors consisting of biocompatible PMMA/silk fibroin bilayer dielectric
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