Tailoring Structure and Field-Effect Characteristics of Ultrathin Conjugated Polymer Films via Phase Separation

被引：35

作者：

Ge, Feng ^{[1
]}

Wei, Shiyu ^{[1
]}

Liu, Zhen ^{[1
]}

Wang, Guiheng ^{[1
]}

Wang, Xiaohong ^{[1
]}

Zhang, Guobing ^{[1
,2
]}

Lu, Hongbo ^{[1
,2
]}

Cho, Kilwon ^{[3
]}

Qiu, Longzhen ^{[1
,2
]}

机构：

[1] Hefei Univ Technol, Acad Optoelect Technol, Key Lab Special Display Technol,State Key Lab Adv, Natl Engn Lab Special Display Technol,Minist Educ, Hefei 230009, Anhui, Peoples R China

[2] Hefei Univ Technol, Anhui Prov Sch Chem & Chem Engn, Key Lab Adv Funct Mat & Devices, Hefei 230009, Anhui, Peoples R China

[3] Pohang Univ Sci & Technol, Dept Chem Engn, Pohang 790784, South Korea

来源：

ACS APPLIED MATERIALS & INTERFACES | 2018年 / 10卷 / 11期

基金：

中国国家自然科学基金;

关键词：

semiconductor/insulator blend; ultrathin film; conjugated polymer; OFET; 2D charge transport; 2-DIMENSIONAL CHARGE-TRANSPORT; EFFECT TRANSISTORS; ORGANIC TRANSISTORS; CARRIER TRANSPORT; SEMICONDUCTOR THICKNESS; INSULATING POLYMER; MOLECULAR-WEIGHT; SOLAR-CELLS; PERFORMANCE; POLY(3-HEXYLTHIOPHENE);

D O I：

10.1021/acsami.7b19171

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A phase-separation method has been developed to control the semiconductor thickness and molecular arrangement via the semiconducting/insulating polymer blend system. The thickness of the poly(3-hexylthiophene) film has been regulated from 10.5 +/- 1.4 nm down to 1.9 +/- 0.8 nm with a favorable self-assembly degree and the mobility ranging from 0.21 to 0.03 cm(2) V-1 s(-1). The ultrathin films show high bias stability and weak decay after 24 days with a bottom-gate configuration. Benefited from a good molecular order, the films have low activation energy and a 2D charge transport profile in semiconductor layers. Moreover, this blending process can be used as a general strategy of thickness control in flexible low-voltage devices and donor acceptor-conjugated polymers.

引用

页码：9602 / 9611

页数：10

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