Using unsorted single-wall carbon nanotubes to enhance mobility of diketopyrrolopyrrole-quarterthiophene copolymer in thin-film transistors
Using unsorted single-wall carbon nanotubes to enhance mobility of diketopyrrolopyrrole-quarterthiophene copolymer in thin-film transistors
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使用未排序的单壁碳纳米管增强薄膜晶体管中二酮吡咯并吡咯-四噻吩共聚物的迁移率
DOI：
10.1016/j.orgel.2014.07.021
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发表时间：
2014
影响因子：
3.2
通讯作者：
H. Nie
中科院分区：
文献类型：
--
作者：
C. Smithson;Yiliang Wu;T. Wigglesworth;S. Gardner;Shiping Zhu;H. Nie
首次采用二酮基吡咯并吡咯四噻吩（DPP-QT）和未分选的单壁碳纳米管（SWCNTs）的半导体共聚物制备了有机薄膜晶体管（OTFT）。使用具有不同管径、长度和形状的三种不同SWCNT来研究碳纳米管的性质对SWCNT在DPP-QT聚合物中的分散性以及OTFT的迁移率和电流开/关比的影响。DPP-QT聚合物能够选择性地分散两种类型的单壁碳纳米管。对于这些SWCNT，发现最佳SWCNT负载量为1.5-2.5重量%，之后由于膜的金属管含量增加，开/关比下降到105以下。在此最佳负载下，当使用具有短长度和小管径的SWCNT时，场效应迁移率提高了两倍，最大迁移率达到1.3 cm 2 V-1 s-1。
Organic thin film transistors (OTFTs) were fabricated for the first time using a semiconductor copolymer of diketopyrrolopyrrole-quarterthiophene (DPP-QT) and unsorted single walled carbon nanotubes (SWCNTs). Three different SWCNTs having different tube diameters, length, and shape were used to investigate the effects of carbon nanotubes’ properties on dispersion of the SWCNTs in DPP-QT polymer, as well as the mobility and current on/off ratio of the OTFTs. The DPP-QT polymer was able to selectively disperse two types of SWCNTs. An optimal SWCNT loading was found to be 1.5–2.5 wt% for these SWCNTs, before the on/off ratio fell below 105due to increased metallic tube content of the film. At this optimal loading, the field effect mobility was improved by a factor of two, with the maximum mobility reaching 1.3 cm2V−1s−1, when the SWCNTs with a short length and small tube diameter were used.
影响因子：
3.7
作者：
Feng, Ye;Miyata, Yasumitsu;Kataura, Hiromichi
通讯作者：
Kataura, Hiromichi