Understanding the Intrinsic Carrier Transport in Highly Oriented Poly(3-hexylthiophene): Effect of Side Chain Regioregularity
文献类型：期刊论文
| 作者 | Qu, Sanyin1; Ming, Chen1; Yao, Qin1; Lu, Wanheng2; Zeng, Kaiyang2; Shi, Wei1,3; Shi, Xun1; Uher, Ctirad4; Chen, Lidong1,5 |
| 刊名 | POLYMERS
 |
| 出版日期 | 2018 |
| 卷号 | 10期号:8 |
| 关键词 | organic thermoelectric poly(3-hexylthiophene) regioregularity carrier transport |
| ISSN号 | 2073-4360 |
| DOI | 10.3390/polym10080815 |
| 英文摘要 | The fundamental understanding of the influence of molecular structure on the carrier transport properties in the field of organic thermoelectrics (OTEs) is a big challenge since the carrier transport behavior in conducting polymers reveals average properties contributed from all carrier transport channels, including those through intra-chain, inter-chain, inter-grain, and hopping between disordered localized sites. Here, combining molecular dynamics simulations and experiments, we investigated the carrier transport properties of doped highly oriented poly(3-hexylthiophene) (P3HT) films with different side-chain regioregularity. It is demonstrated that the substitution of side chains can not only take effect on the carrier transport edge, but also on the dimensionality of the transport paths and as a result, on the carrier mobility. Conductive atomic force microscopy (C-AFM) study as well as temperature-dependent measurements of the electrical conductivity clearly showed ordered local current paths in the regular side chain P3HT films, while random paths prevailed in the irregular sample. Regular side chain substitution can be activated more easily and favors one-dimensional transport along the backbone chain direction, while the irregular sample presents the three-dimensional electron hopping behavior. As a consequence, the regular side chain P3HT samples demonstrated high carrier mobility of 2.9 +/- 0.3 cm(2)/V center dot s, which is more than one order of magnitude higher than that in irregular side chain P3HT films, resulting in a maximum thermoelectric (TE) power factor of 39.1 +/- 2.5 mu W/mK(2) at room temperature. These findings would formulate design rules for organic semiconductors based on these complex systems, and especially assist in the design of high performance OTE polymers. |
| 学科主题 | Polymer Science |
| WOS记录号 | WOS:000445410200008 |
| 出版者 | MDPI |
| 资助机构 | This research was funded by [International Cooperation Project of Ministry of Science and Technology grant] grant number [2017YFE0107800], [National Natural Science Foundation of China] grant number [No 21602233, No 51632010] and [a research grant from the Shanghai Government] grant number [No 15JC1400301, No 16ZR1414100]. ; This research was funded by [International Cooperation Project of Ministry of Science and Technology grant] grant number [2017YFE0107800], [National Natural Science Foundation of China] grant number [No 21602233, No 51632010] and [a research grant from the Shanghai Government] grant number [No 15JC1400301, No 16ZR1414100]. |
| 源URL | [http://ir.sic.ac.cn/handle/331005/24747]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 作者单位 | 1.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China 2.Chinese Acad Sci, Shanghai Inst Ceram, CAS Key Lab Mat Energy Convers, Shanghai 200050, Peoples R China 3.Natl Univ Singapore, Dept Mech Engn, Singapore 117576, Singapore 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 5.Univ Michigan, Dept Phys, Ann Arbor, MI 48109 USA 6.Shanghai Inst Mat Genome, Shanghai 200050, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qu, Sanyin,Ming, Chen,Yao, Qin,et al. Understanding the Intrinsic Carrier Transport in Highly Oriented Poly(3-hexylthiophene): Effect of Side Chain Regioregularity[J]. POLYMERS,2018,10(8). |
| APA | Qu, Sanyin.,Ming, Chen.,Yao, Qin.,Lu, Wanheng.,Zeng, Kaiyang.,...&Chen, Lidong.(2018).Understanding the Intrinsic Carrier Transport in Highly Oriented Poly(3-hexylthiophene): Effect of Side Chain Regioregularity.POLYMERS,10(8). |
| MLA | Qu, Sanyin,et al."Understanding the Intrinsic Carrier Transport in Highly Oriented Poly(3-hexylthiophene): Effect of Side Chain Regioregularity".POLYMERS 10.8(2018). |
入库方式： OAI收割
来源：上海硅酸盐研究所
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