Patterned Sandwich-Type Silver Nanowire-Based Flexible Electrode by Photolithography
- Authors
- Kim, Young Un; Kwon, Na Yeon; Park, Su Hong; Kim, Chai Won; Chau, Hong Diem; Hoang, Mai Ha; Cho, Min Ju; Choi, Dong Hoon
- Issue Date
- 12월-2021
- Publisher
- AMER CHEMICAL SOC
- Keywords
- silver nanowires; flexible electrode; transparent electrode; patterned electrode; bending stability
- Citation
- ACS APPLIED MATERIALS & INTERFACES, v.13, no.51, pp.61463 - 61472
- Indexed
- SCIE
SCOPUS
- Journal Title
- ACS APPLIED MATERIALS & INTERFACES
- Volume
- 13
- Number
- 51
- Start Page
- 61463
- End Page
- 61472
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/137593
- DOI
- 10.1021/acsami.1c19164
- ISSN
- 1944-8244
- Abstract
- Silver nanowires (AgNWs) are one of the important flexible electrode material candidates that can replace brittle indium tin oxide (ITO). In this work, we demonstrated novel patterned sandwich-type AgNW-based transparent electrodes easily prepared using the photolithography method for application in flexible devices. A cross-linked underlayer was introduced to increase the adhesion properties between a poly(ethylene terephthalate) substrate and AgNWs, and as a result, a uniform AgNW layer was easily deposited. Finally, the AgNW layer could be easily patterned by introducing a photocross-linkable upper layer without lift-off, dry transfer, and removal methods. A mixture of poly(sodium-4-styrene sulfonate) (PSS-Na++) and 2,4-hexa-diyne-1,6-diol (HDD), which is a component of the upper layer, exhibited good cross-linking properties as well as excellent adhesion to the AgNW layer. Through the above method, it was possible to easily fabricate a patterned electrode with smooth surface morphology. Moreover, AgNW-based patterned electrodes exhibit good optical and electrical proper ties (R-s = 29.8 Omega/square, T-550 nm = 94.6%), making them suitable for optoelectronic devices. Flexible polymer solar cells (PSCs) using patterned AgNW electrodes showed a high power conversion efficiency of over 10%, which is comparable to that of PSCs using rigid ITO electrodes. In addition, the high mechanical stability of AgNW-based PSCs was confirmed by bending experiments.
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