Thermopower enhancement in conducting polymer nanocomposites via carrier energy scattering at the organic-inorganic semiconductor interface

被引：354

作者：

He, Ming ^{[1
]}

Ge, Jing ^{[1
]}

Lin, Zhiqun ^{[2
]}

Feng, Xuhui ^{[3
]}

Wang, Xinwei ^{[3
]}

Lu, Hongbin ^{[1
]}

Yang, Yuliang ^{[1
]}

Qiu, Feng ^{[1
]}

机构：

[1] Fudan Univ, State Key Lab Mol Engn Polymers, Dept Macromol Sci, Shanghai 200433, Peoples R China

[2] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

[3] Iowa State Univ, Dept Mech Engn, Ames, IA 50011 USA

来源：

ENERGY & ENVIRONMENTAL SCIENCE | 2012年 / 5卷 / 08期

基金：

国家高技术研究发展计划(863计划);

关键词：

HETEROJUNCTION SOLAR-CELLS; THERMOELECTRIC PROPERTIES; BI2TE3; NANOSTRUCTURES; MERIT; POLYTHIOPHENE; PERFORMANCE; GENERATION; EVOLUTION; SB2TE3;

D O I：

10.1039/c2ee21803h

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The energy-filtering effect was successfully employed at the organic-inorganic semiconductor interface of poly(3-hexylthiophene) (P3HT) nanocomposites with the addition of Bi2Te3 nanowires, where low-energy carriers were strongly scattered by the appropriately engineered potential barrier of the P3HT-Bi2Te3 interface. The resulting P3HT-Bi2Te3 nanocomposites exhibited a high power factor of 13.6 mu W K(-2)m(-1) compared to that of 3.9 mu W K-2 m(-1) in P3HT. The transport characteristics of nanocomposites, including the carrier concentration, mobility, and energy-dependent scattering parameter, were revealed by the experimental measurements of electrical conductivity, Seebeck coefficient, and Hall coefficient to quantitatively elucidate the carrier energy scattering at the P3HT-Bi2Te3 interface. The ability to rationally engineer the organic-inorganic semiconductor interfaces of polymer nanocomposites to achieve an improved Seebeck coefficient and power factor provides a potential route to high-performance, large-area, and flexible polymer thermoelectric materials.

引用

页码：8351 / 8358

页数：8

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