Highly anisotropic P3HT films with enhanced thermoelectric performance via organic small molecule epitaxy

doi:10.1038/am.2016.97

CAS OpenIR > 中科院上海应用物理研究所2011-2018年

	Highly anisotropic P3HT films with enhanced thermoelectric performance via organic small molecule epitaxy
	Qu, SY; Yao, Q; Wang, LM; Chen, ZH; Xu, KQ; Zeng, HR; Shi, W; Zhang, TS; Uher, C; Chen, LD; Chen, LD (reprint author), Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, 1295 Dingxi Rd, Shanghai 200050, Peoples R China.; Chen, LD (reprint author), Chinese Acad Sci, CAS Key Lab Mat Energy Convers, Shanghai Inst Ceram, 1295 Dingxi Rd, Shanghai 200050, Peoples R China.
	2016
发表期刊	NPG ASIA MATERIALS
ISSN	1884-4049
卷号	8 页码:-
文章类型	期刊论文
摘要	Conducting polymers are potential candidates for thermoelectric (TE) applications owing to their low thermal conductivity, non-toxicity and low cost. However, the coil conformation and random aggregation of polymer chains usually degrade electrical transport properties, thus deteriorating TE performance. In this work, we fabricated poly(3-hexylthiophene) (P3HT) films with highly oriented morphology using 1,3,5-trichlorobenzene (TCB), an organic small-molecule, as a template for polymer epitaxy under a temperature gradient crystallization process. The resulting P3HT molecules, which were confirmed to be highly anisotropic by a combination of scanning electron microscopy, atomic force microscopy, polarizing microscope, polarized Raman spectroscopy, and two-dimensional-grazing incidence X-ray diffraction (GIXRD) analysis, not only markedly reduced the conjugated defects along the polymer backbone, but also effectively increased the degree of electron delocalization. These combined phenomena produced an efficient, 1D path for carrier movement and therefore resulted in enhanced carrier mobility in the TCB-treated P3HT films. The maximum values of the electrical conductivity and Seebeck coefficient were 320 S cm(-1) and 269 mu V K-1, respectively. Consequently, the maximum TE power factor and ZT value at 365 K reached 62.4 mu WmK(-2) and 0.1, respectively, in the parallel direction of the TCB-treated P3HT film. To the best of our knowledge, these are the highest values reported for pure P3HT TE materials. The method of using organic small-molecule epitaxy to generate highly anisotropic polymer films is expected to be valid for many conducting polymers.
DOI	10.1038/am.2016.97
收录类别	SCI
语种	英语
WOS记录号	WOS:000383414800010
引用统计
文献类型	期刊论文
条目标识符	http://ir.sinap.ac.cn/handle/331007/26531
专题	中科院上海应用物理研究所2011-2018年
通讯作者	Yao, Q; Chen, LD (reprint author), Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, 1295 Dingxi Rd, Shanghai 200050, Peoples R China.; Chen, LD (reprint author), Chinese Acad Sci, CAS Key Lab Mat Energy Convers, Shanghai Inst Ceram, 1295 Dingxi Rd, Shanghai 200050, Peoples R China.
推荐引用方式 GB/T 7714	Qu, SY,Yao, Q,Wang, LM,et al. Highly anisotropic P3HT films with enhanced thermoelectric performance via organic small molecule epitaxy[J]. NPG ASIA MATERIALS,2016,8:-.
APA	Qu, SY.,Yao, Q.,Wang, LM.,Chen, ZH.,Xu, KQ.,...&Chen, LD .(2016).Highly anisotropic P3HT films with enhanced thermoelectric performance via organic small molecule epitaxy.NPG ASIA MATERIALS,8,-.
MLA	Qu, SY,et al."Highly anisotropic P3HT films with enhanced thermoelectric performance via organic small molecule epitaxy".NPG ASIA MATERIALS 8(2016):-.

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