Aminofluorene-substituted pyrene derivatives for efficient blue organic light-emitting diodes
- Authors
- Kang, Jisu; Pak, Soyoung; Hwang, Namhee; Lee, Song Eun; Kim, Young Kwan; Yoon, Seung Soo
- Issue Date
- 2018
- Publisher
- TAYLOR & FRANCIS LTD
- Keywords
- Blue emitting material; fluorene; organic light-emitting diodes; pyrene
- Citation
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS, v.662, no.1, pp.9 - 17
- Journal Title
- MOLECULAR CRYSTALS AND LIQUID CRYSTALS
- Volume
- 662
- Number
- 1
- Start Page
- 9
- End Page
- 17
- URI
- https://scholarworks.bwise.kr/hongik/handle/2020.sw.hongik/4811
- DOI
- 10.1080/15421406.2018.1466235
- ISSN
- 1542-1406
- Abstract
- In this research, we designed and synthesized blue emitting materials based on aminofluorene-substituted pyrene derivatives. Organic light-emitting diodes (OLEDs) devices using these materials were fabricated in the following sequence; ITO/N,N-diphenyl-N,N-(2-napthyl)-(1,1-phenyl)-4,4-diamine (NPB) (500 angstrom)/Blue emitters 1 or 2 (300 angstrom)/4,7-diphenyl-1,10-phenanthroline (BPhen) (300 angstrom)/lithium quinolate (Liq) (20 angstrom)/Al (1000 angstrom). These devices showed efficient blue emissions. Particularly, a device A using 7-(1-(2-(diphenylamino)-9,9-diethyl-9H-fluoren-7-yl)pyren-6-yl)-9,9-diethyl-N,N-diphenyl-9H-fluoren-2-amine (1) as blue emitter exhibited luminous efficiency, power efficiency, and external quantum efficiency of 2.20 cd/A, 0.80 lm/W, 1.62% at 100 mA/cm(2), respectively, with Commission Internationale d'Enclairage (CIE) coordinates of (0.17, 0.24) at 8.0 V.
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Collections - College of Engineering > Department of Science > 1. Journal Articles
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