PEDOT and PEDOT:PSS thin-film electrodes: patterning, modification and application in stretchable organic optoelectronic devices

Organic optoelectronic devices, such as thin-film transistors, solar cells and light-emitting diodes, have drawn increasing interest because of their promising applications in sensing, energy conversion, optical imaging and optogenetic therapy. With the rapid development of wearable/implantable devi...

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Published inJournal of materials chemistry. C, Materials for optical and electronic devices Vol. 11; no. 31; pp. 1435 - 1454
Main Authors Wang, Yue, Jia, Sisi, Zhang, Zhitao
Format Journal Article
LanguageEnglish
Published Cambridge Royal Society of Chemistry 10.08.2023
Subjects
Electrode materials
Electrodes
Energy conversion
High resolution
Indium tin oxides
Light emitting diodes
Optoelectronic devices
Photovoltaic cells
Polystyrene resins
Semiconductor devices
Solar cells
Spin coating
Stretchability
Thin film transistors
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Summary:Organic optoelectronic devices, such as thin-film transistors, solar cells and light-emitting diodes, have drawn increasing interest because of their promising applications in sensing, energy conversion, optical imaging and optogenetic therapy. With the rapid development of wearable/implantable devices, there is a growing demand for next-generation highly stretchable optoelectronics. Conventional optoelectronic devices are usually constructed based on brittle indium tin oxide electrodes, which cannot meet the needs above, so it is essential to investigate novel electrodes with excellent stretchability. Poly(3,4-ethylenedioxythiophene) (PEDOT) and its aqueous derivative with poly(styrene sulfonate) (PEDOT:PSS) are promising electrode materials for stretchable organic optoelectronic devices considering their low cost, high conductivity, transparency, intrinsic stretchability and solution-processability. However, pure, spin-coated PEDOT-based electrodes typically possess large sizes of at least millimeter level, and it is difficult for them to satisfy the requirements for fabricating high-resolution devices. Therefore, strategies to decrease the feature size of the PEDOT-based electrodes are critically necessary. In this review, we will carefully discuss various patterning strategies for fabricating high-resolution PEDOT and PEDOT:PSS thin-film electrode arrays and summarize their characteristics. Modification methods to further enhance the conductivity and stretchability of PEDOT-based electrodes and their applications in organic optoelectronic devices are highlighted. In the end, the outlook for future research efforts is also described. This review mainly focuses on patterning strategies and modification methods for better electrical and mechanical properties of PEDOT-based thin-film electrodes as well as their applications in stretchable organic optoelectronics.
Bibliography:Yue Wang: Yue Wang received her bachelor's degree in the School of Chemistry and Chemical Engineering from Shanghai Jiao Tong University in 2023. She then joined Prof Zhitao Zhang's group for master program in 2023. His research mainly focuses on the fabrication and patterning of high-performance stretchable light-emitting display devices.
Sisi Jia: Dr Sisi Jia received her PhD degree from the Shanghai Institute of Applied Physics, Chines Academy of Sciences in July 2014. She worked as a postdoc in the Department of Chemical and Biomolecular Engineering at Johns Hopkins University in the U.S. from 2016-2021. Then she joined the Zhangjiang Laboratory as a Professor in November 2021. Her research focuses on using DNA self-assembly to construct nanophotonic and nanoelectronic structures and devices.
Zhitao Zhang: In July 2017, Dr Zhitao Zhang received his PhD degree from the Laboratory of Advanced Materials at Fudan University in China. After his studies, he then worked as a postdoc in the Department of Chemical Engineering at Stanford University in the U.S. In July 2022, he joined to the School of Chemistry and Chemical Engineering at Shanghai Jiao Tong University as an Associate Professor. He has developed soft and stretchable electronic materials and devices for wearable and biomedical applications.
ISSN:2050-7526
2050-7534
DOI:10.1039/d3tc01579c