Enhancement in Charge Carrier Mobility by Using Furan as Spacer in Thieno[3,2-b]Pyrrole and Alkylated-Diketopyrrolopyrrole Based Conjugated Copolymers

被引：6
|
作者：
Gamage, Prabhath L. [1 ]
Gedara, Chinthaka M. Udamulle [1 ]
Gunawardhana, Ruwan [1 ]
Bulumulla, Chandima [1 ]
Ma, Ziyuan [1 ]
Shrivastava, Ashutosh [1 ]
Biewer, Michael C. [1 ]
Stefan, Mihaela C. [1 ]
机构：
[1] Univ Texas Dallas, Dept Chem & Biochem, Richardson, TX 75080 USA
来源：
APPLIED SCIENCES-BASEL | 2022年 / 12卷 / 06期
基金：
美国国家科学基金会;
关键词：
pyrrole; diketopyrrolopyrrole; furan; organic electronics; organic semiconductors; organic field-effect transistors; FIELD-EFFECT TRANSISTORS; POLYMER SEMICONDUCTORS; PERFORMANCE; ELECTRONICS; BACKBONE; DESIGN; DONOR;
D O I：
10.3390/app12063150
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The structural alteration of semiconducting polymer backbones can improve the optoelectronic properties of organic semiconductors and enhance field-effect mobilities. In our efforts towards improving the performance of organic field-effect transistors (OFETs), we are reporting a donor-acceptor polymer containing thieno[3,2-b]pyrrole (TP) donor and a furan-flanked diketopyrrolopyrrole (DPP) electron acceptor, which yielded an asymmetric poly(methylthienopyrrolo)furanyl)diketopyrrolopyrrol) P(FDPP-TP) organic semiconducting polymer. The introduction of a furan spacer improved thermally induced crystallinity and molecular packing, as confirmed by grazing incidence X-ray diffraction (XRD) and tapping-mode atomic force microscopy (TMAFM). The tested OFET devices gave maximum hole mobility of 0.42 cm(2) V-1 s(-1) with threshold voltages around 0 V for bottom-gate bottom-contact device configuration.
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页数：10
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