Dopant-Dependent Increase in Seebeck Coefficient and Electrical Conductivity in Blended Polymers with Offset Carrier Energies
文献类型：期刊论文
| 作者 | Li, Hui; Plunkett, Evan; Cai, Zhengxu; Qiu, Botong; Wei, Tianran; Chen, Hongyi; Thon, Susanna M.; Reich, Daniel H.; Chen, Lidong; Katz, Howard E. |
| 刊名 | ADVANCED ELECTRONIC MATERIALS
 |
| 出版日期 | 2019-11-30 |
| 卷号 | 5期号:11 |
| ISSN号 | 2199-160X |
| 关键词 | blend chemical doping density of states polymer semiconductor thermoelectrics |
| DOI | 10.1002/aelm.201800618 |
| 文献子类 | Article |
| 英文摘要 | The strong and counterproductive interrelationship of thermoelectric parameters remains a bottleneck to improving thermoelectric performance, especially in polymer-based materials. In this paper, a compositional range is investigated over which there is decoupling of the electrical conductivity and Seebeck coefficient, achieving increases in at least one of these two parameters while the other is maintained or slightly increased as well. This is done using an alkylthio-substituted polythiophene (PQTS12) as additive in poly(bisdodecylquaterthiophene) (PQT12) with tetrafluorotetracyanoquinodimethane (F4TCNQ) and nitrosyl tetrafluoroborate (NOBF4) as dopants. The power factor increases two orders of magnitude with the PQTS12 additive at constant doping level. Using a second pair of polymers, poly(2,5-bis(3-dodecylthiophen-2-yl)thieno[3,2-b]thiophene (PBTTTC12) and poly(2,5-bis(3-dodecylthiothiophen-2-yl)thieno[3,2-b]thiophene, (PBTTTSC12), with higher mobilities, decoupling of the Seebeck coefficient and electrical conductivity is also observed and higher power factor is achieved. Distinguished from recently reported works, these two sets of polymers possess very closely offset carrier energy levels (0.05-0.07 eV), and the microstructure, assessed using grazing incidence X-ray scattering, and mobility evaluated in field-effect transistors, are not adversely affected by the blending. Experiments, calculations, and simulations are consistent with the idea that blending and doping polymers with closely spaced energy levels and compatible morphologies to promote carrier mobility favors increased power factors. |
| WOS关键词 | DOPED ORGANIC SEMICONDUCTORS ; TRANSPORT ; PROPERTY ; MOBILITY ; LEVEL |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Physics |
| 语种 | 英语 |
| 出版者 | WILEY |
| 源URL | [http://ir.sic.ac.cn/handle/331005/27512]  |
| 专题 | 中国科学院上海硅酸盐研究所 |
| 推荐引用方式 GB/T 7714 | Li, Hui,Plunkett, Evan,Cai, Zhengxu,et al. Dopant-Dependent Increase in Seebeck Coefficient and Electrical Conductivity in Blended Polymers with Offset Carrier Energies[J]. ADVANCED ELECTRONIC MATERIALS,2019,5(11). |
| APA | Li, Hui.,Plunkett, Evan.,Cai, Zhengxu.,Qiu, Botong.,Wei, Tianran.,...&Katz, Howard E..(2019).Dopant-Dependent Increase in Seebeck Coefficient and Electrical Conductivity in Blended Polymers with Offset Carrier Energies.ADVANCED ELECTRONIC MATERIALS,5(11). |
| MLA | Li, Hui,et al."Dopant-Dependent Increase in Seebeck Coefficient and Electrical Conductivity in Blended Polymers with Offset Carrier Energies".ADVANCED ELECTRONIC MATERIALS 5.11(2019). |
入库方式： OAI收割
来源：上海硅酸盐研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。