Development of Self-Doped Conjugated Polyelectrolytes with Controlled Work Functions and Application to Hole Transport Layer Materials for High-Performance Organic Solar Cells
- Authors
- Jo, Jea Woong; Jung, Jae Woong; Bae, Seunghwan; Ko, Min Jae; Kim, Heesuk; Jo, Won Ho; Jen, Alex K. -Y.; Son, Hae Jung
- Issue Date
- 21-6월-2016
- Publisher
- WILEY-BLACKWELL
- Keywords
- conducting polymers; conjugated polyelectrolytes; doping; hole transport layers; organic solar cells
- Citation
- ADVANCED MATERIALS INTERFACES, v.3, no.12
- Indexed
- SCIE
SCOPUS
- Journal Title
- ADVANCED MATERIALS INTERFACES
- Volume
- 3
- Number
- 12
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/88315
- DOI
- 10.1002/admi.201500703
- ISSN
- 2196-7350
- Abstract
- A series of anionic self-doped conjugated polyelectrolytes (CPEs) by copolymerization of a 1,4-bis(4-sulfonatobutoxy)benzene moiety with different counter monomers of thiophene, bithiophene, and terthiophene is reported. The CPEs show high conductivity of approximate to 10(-4) S cm(-1) due to being self-doped in a neutral state and exhibit excellent hole transporting property in the out-of-plane direction, compared with poly(3,4-ethylened ioxythiophene):poly(styrene-sulfonate) (PEDOT:PSS). Moreover, the CPE incorporating a less electron-donating unit from terthiophene to thiophene exhibits a higher work function and therefore, PhNa-1T incorporating thiophene shows a relatively high work function of 5.21 eV than 4.97 eV of PEDOT: PSS. This can induce a higher internal field in the solar cell device, facilitating efficient charge collection to the electrode. As a result, polymer solar cell devices incorporating the CPEs as a hole transporting layer achieve enhanced photovoltaic performances from those of the conventional PEDOT: PSS-based devices. The solar cell efficiency reaches up to 9.89%, which is among the highest values demonstrated by PCE-10-based normal-type organic solar cells.
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Collections - Graduate School > KU-KIST Graduate School of Converging Science and Technology > 1. Journal Articles
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