Significance of the double-layer capacitor effect in polar rubbery dielectrics and exceptionally stable low-voltage high transconductance organic transistors

被引：64

作者：

Wang, Chao ^{[1
]}

Lee, Wen-Ya ^{[1
,2
]}

Kong, Desheng ^{[1
]}

Pfattner, Raphael ^{[1
,3
,4
]}

Schweicher, Guillaume ^{[1
]}

Nakajima, Reina ^{[1
]}

Lu, Chien ^{[1
]}

Mei, Jianguo ^{[1
]}

Lee, Tae Hoon ^{[5
]}

Wu, Hung-Chin ^{[1
]}

Lopez, Jeffery ^{[1
]}

Diao, Ying ^{[1
]}

Gu, Xiaodan ^{[1
]}

Himmelberger, Scott ^{[6
]}

Niu, Weijun ^{[7
]}

Matthews, James R. ^{[7
]}

He, Mingqian ^{[7
]}

Salleo, Alberto ^{[6
]}

Nishi, Yoshio ^{[5
]}

Bao, Zhenan ^{[1
]}

机构：

[1] Stanford Univ, Dept Chem Engn, Stanford, CA 94305 USA

[2] Natl Taipei Univ Technol, Dept Chem Engn & Biotechnol, Taipei 106, Taiwan

[3] Inst Ciencia Mat Barcelona ICMAB CSIC, Bellaterra 08193, Spain

[4] Networking Res Ctr Bioengn Biomat & Nanomed CIBER, Bellaterra 08193, Spain

[5] Stanford Univ, Dept Elect Engn, Stanford, CA 94305 USA

[6] Stanford Univ, Dept Mat Sci & Engn, Stanford, CA 94305 USA

[7] Corning Inc, Corning, NY 14831 USA

来源：

SCIENTIFIC REPORTS | 2015年 / 5卷

关键词：

FIELD-EFFECT TRANSISTORS; THIN-FILM TRANSISTORS; GEL GATE DIELECTRICS; POLYMER ELECTROLYTE; SEMICONDUCTING POLYMERS; CHARGE-TRANSPORT; CONDUCTIVITY; STABILITY;

D O I：

10.1038/srep17849

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Both high gain and transconductance at low operating voltages are essential for practical applications of organic field-effect transistors (OFETs). Here, we describe the significance of the double-layer capacitance effect in polar rubbery dielectrics, even when present in a very low ion concentration and conductivity. We observed that this effect can greatly enhance the OFET transconductance when driven at low voltages. Specifically, when the polar elastomer poly(vinylidene fluoride-co-hexafluoropropylene) (e-PVDF-HFP) was used as the dielectric layer, despite a thickness of several micrometers, we obtained a transconductance per channel width 30 times higher than that measured for the same organic semiconductors fabricated on a semicrystalline PVDF-HFP with a similar thickness. After a series of detailed experimental investigations, we attribute the above observation to the double-layer capacitance effect, even though the ionic conductivity is as low as 10(-10) S/cm. Different from previously reported OFETs with double-layer capacitance effects, our devices showed unprecedented high bias-stress stability in air and even in water.

引用

页数：8

共 35 条

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