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Wang et al. Soft Sci 2023;3:34 Soft Science
DOI: 10.20517/ss.2023.25

Review Article Open Access

Vacuum filtration method towards flexible

thermoelectric films

1
1,*
1
Chenxi Wang , Qing Liu , Haijun Song , Qinglin Jiang 2,*
1
College of Information Science and Engineering, Jiaxing University, Jiaxing 314001, Zhejiang, China.
2
State Key Laboratory of Luminescent Materials and Devices, South China University of Technology, Guangzhou 510640,
Guangdong, China.
* Correspondence to: Dr. Haijun Song, College of Information Science and Engineering, Jiaxing University, 899 Guangqiong
Road, Nanhu District, Jiaxing 314001, Zhejiang, China. E-mail: songhaijun8837@126.com; Prof. Qinglin Jiang, State Key
Laboratory of Luminescent Materials and Devices, South China University of Technology, 381 Wu-shan Road, Tianhe District,
Guangzhou 510640, Guangdong, China. E-mail: jiangql@scut.edu.cn
How to cite this article: Wang C, Liu Q, Song H, Jiang Q. Vacuum filtration method towards flexible thermoelectric films. Soft Sci
2023;3:34. https://dx.doi.org/10.20517/ss.2023.25

Received: 31 May 2023 First Decision: 21 Jun 2023 Revised: 20 Jul 2023 Accepted: 31 Jul 2023 Published: 10 Oct 2023

Academic Editor: Zhifeng Ren Copy Editor: Dong-Li Li Production Editor: Dong-Li Li

Abstract
Thermoelectric (TE) conversion technology can directly exploit the temperature difference of several Kelvin
between the human body and the environment to generate electricity, which provides a self-powered solution for
wearable electronics. Flexible TE materials are increasingly being developed through various methods, among
which the vacuum filtration method stands out for its unique advantages, attracting the favor of researchers. It has
been proven to construct flexible TE thin films with excellent performance effectively. This paper presents a
comprehensive overview and survey of the advances of the vacuum filtration method in producing flexible TE thin
films. The materials covered in this study include conducting polymer-based materials, carbon nanoparticle-based
materials, inorganic materials, two-dimensional materials, and ternary composites. Finally, we explore potential
research outlooks and the significance of flexible films, which are at the forefront of research in TE materials
science.

Keywords: Thermoelectric, vacuum filtration, flexible film

INTRODUCTION
As humans enter the Internet of Things era, autonomous sensors play essential roles in various fields, such
as biometric monitoring, medical monitoring, and industrial and environmental controls. Moreover, there

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