Transparent Charge Transfer Complex with High Thermoelectric Performance

Author:

Li Xiao-Lei1,Zhang Gao1,Zhang Xin1,Zou Weitian1,Li Ge1,Zhang Xuefei2,Li Yi3,Zhang Lizhai4,Wang Minqiang5,Chen Bo5,Wu Haijun1,Wan Chunlei6ORCID,Yang Guan-Jun1

Affiliation:

1. Xi'an Jiaotong University

2. State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

3. Beijing University of Chemical Technology

4. Shaanxi University of Technology

5. Xi’an Jiaotong University

6. State Key Lab of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing, P. R. China, 100084

Abstract

Abstract Searching n-type high-performance organic thermoelectric material with good air-stability and high transparency remains a big challenge. Here, we report an all-transparent n-type charge transfer complex [ZnBr2(Br-C6H4-NH2)2] with an ultra-wide band gap of 4.25 eV (~ 163 kBT). This material exhibits an ultrahigh electrical conductivity of ~ 2,936 S cm− 1 and a high Seebeck coefficient of − 114 µV K‒1, leading to an extraordinarily high power factor of ~ 3,797 µW m‒1 K‒2 at room temperature, which is a record value for organic thermoelectric materials. Remarkably, figure-of-merit (ZT) values of 0.23 at 298 K and 0.45 at 473 K were achieved, respectively. The ZT values are not only the state-of-the-art performance for n-type organic thermoelectric materials, but also better than those of some typical inorganic thermoelectric materials at near room-temperature range. The extraordinarily high thermoelectric performance is attributed to the electron transfer induced n-type heavily doped characteristic, high valley band degeneracy and heavy effective mass. Owing to its exceptional thermoelectric performance and excellent air-stability, [ZnBr2(Br-C6H4-NH2)2] can be considered as a milestone in the development of organic thermoelectric materials.

Publisher

Research Square Platform LLC

Reference41 articles.

1. Massetti, M. et al. Unconventional thermoelectric materials for energy harvesting and sensing applications. Chem. Rev. 121, 12465 – 12547 (2021).

2. Rationally designing high-performance bulk thermoelectric materials;Tan G;Chem. Rev.,2016

3. Thermoelectrics: from history, a window to the future;Beretta D;Mater. Sci. Eng. R Rep.,2018

4. Organic thermoelectric materials for energy harvesting and temperature control;Russ B;Nat. Rev. Mater.,2016

5. Chemical doping of organic semiconductors for thermoelectric applications;Zhao W;Chem. Soc. Rev.,2020

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