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
收藏
页码：9602 / 9611
页数：10
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