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
ISSN1884-4049
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.
DOI10.1038/am.2016.97
收录类别SCI
语种英语
WOS记录号WOS:000383414800010
引用统计
被引频次:11[WOS]   [WOS记录]     [WOS相关记录]
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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