Donor unit effect on DPP based organic field-effect transistor performance

被引：14
|
作者：
Takaya, Tomotsugu [1 ]
Mamo, Melaku Dereje [2 ]
Karakawa, Makoto [1 ,3 ]
Noh, Yong-Young [2 ]
机构：
[1] Kanazawa Univ, Grad Sch Nat Sci & Technol, Kakuma Machi, Kanazawa, Ishikawa 9201192, Japan
[2] Dongguk Univ, Dept Energy & Mat Engn, 30 Pildong Ro,1 Gil, Seoul 04620, South Korea
[3] Kanazawa Univ, Inst Frontier Sci Initiat, Kanazawa, Ishikawa 9201192, Japan
来源：
DYES AND PIGMENTS | 2018年 / 158卷
关键词：
Organic field-effect transistors; Diketopyrrolopyrrole; Conjugated polymers; Donor units; Charge transport; THIN-FILM TRANSISTORS; RANDOM COPOLYMERS; GATE DIELECTRICS; HIGH HOLE; POLYMER; MOBILITY; ELECTRONICS;
D O I：
10.1016/j.dyepig.2018.05.062
中图分类号：
O69 [应用化学];
学科分类号：
081704 ;
摘要：
We report diketopyrrolopyrrole (DPP) based copolymers, poly (diketopyrrolopyrrole-cyclopentadithiophene) (PDPPTT-CPDT) and poly(diketopyrrolopyrrolebenzo[1,2-b:4,5-b']dithiophene) (PDPPTT-BDT) to investigate donor unit structure effects on organic field-effect transistor (OFET) performance. The highest occupied molecular orbital (HOMO) level and copolymer band gap were tuned by introducing different donor units on the acceptor DPP backbone. PDPPTT-BDT OFETs show 10 fold higher hole field-effect mobility, up to 0.08 cm(2) V-1 s(-1), than PDPPTT-CPDT OFETs due to better crystallinity and higher HOMO energetic levels. PDPPTT-CPDT and PDPPTT-BDT were operationally stable with negligible threshold voltage shift after cycling.
引用
收藏
页码：306 / 311
页数：6
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