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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27 , No. 5

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Journal of the Korean Society of Manufacturing Technology Engineers - Vol. 27, No. 5, pp. 446-451
Abbreviation: J. Korean Soc. Manuf. Technol. Eng.
ISSN: 2508-5107 (Online)
Print publication date 15 Oct 2018
Received 27 Aug 2018 Revised 13 Sep 2018 Accepted 17 Sep 2018
DOI: https://doi.org/10.7735/ksmte.2018.27.5.446
전 용액 제조기법에 의한 고분자 발광 다이오드
고평삼^a ; Nguyen Dang Thuan^a ; 권신^b ; 우규희^b ; 이택민^b ; Zhaoyang Zhong^b ; 윤홍석^a^{, *}


All Solution-Processed Polymer Light-Emitting Diodes
Pyeongsam Ko^a ; Nguyen Dang Thuan^a ; Sin Kwon^b ; Kyoohee Woo^b ; Taikmin Lee^b ; Zhaoyang Zhong^b ; Hongseok Youn^a^{, *}
aDepartment of Mechanical Engineering, Hanbat National University, 125, Dongseodae-ro, Yuseong-gu, Daejeon 34158, Korea
bDepartment of Printed Electronics, Korea Institute of Machinery and Materials, 156, Gajeongbuk-ro, Yuseong-gu, Daejeon 34103, Korea
Correspondence to : ^*Tel.: +82-42-821-1079 Fax: +82-42-821-1587 E-mail address: hsyoun@hanbat.ac.kr (Hongseok Youn).



Funding Information ▼ Hanbat National University

Abstract

Polymer light-emitting diodes (PLEDs) have great potential toward next generation light source because of their flexibility, facile fabrication, and simple structure. However, the fabrication of low-cost PLEDs is still quite challenging, owing to the vulnerability of cathode and electron injection/transportation materials against the oxygen and moisture in the air. In this paper, we propose an all solution-processable polymer light-emitting diode structure and lamination method. Generally, electrode layers are formed by vacuum deposition; however, in this study, a solution-processed Ag film was developed and used as an electrode. The solution-processed Ag film was transferred to a polymer hot-melt film and then laminated onto the PLED layer. The laminated device exhibited good performances in turn-on voltage (5.0 V), brightness (2500 cd/m²) and current efficiency (0.6 cd/A), which were comparable to that of the evaporated device.


Keywords: PLEDs (polymer light-emitting diodes), Solution process, Lamination, Silver nanoparticle

Acknowledgments

이 논문은 2015년도 한밭대학교 교내학술연구비의 지원을 받아 수행되었음.

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