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High-efficiency deep-blue organic light-emitting diodes using dual-emitting layer
- Authors
- Seo, Ji Hoon; Lee, Kum Hee; Seo, Bo Min; Koo, Ja Ryong; Moon, Se Jin; Park, Jung Keun; Yoon, Seung Soo; Kim, Young Kwan
- Issue Date
- Oct-2010
- Publisher
- ELSEVIER SCIENCE BV
- Keywords
- Organic light-emitting diodes; Deep-blue emission; Dual-emitting layer
- Citation
- ORGANIC ELECTRONICS, v.11, no.10, pp.1605 - 1612
- Journal Title
- ORGANIC ELECTRONICS
- Volume
- 11
- Number
- 10
- Start Page
- 1605
- End Page
- 1612
- ISSN
- 1566-1199
- Abstract
- High-efficiency deep-blue organic light-emitting diodes (OLED) using novel deep-blue host and dopant based on dual-emitting layer (D-EML) system which compose of 2-methyl-9,10-di(2-naphthyl)anthracene and 4'-(dinaphthalen-2-yl)-1,1'-binaphthyl as hosts and 9-N-phenylcarbazole-3-vinyl-p-terphenyl as a dopant exhibits good confinement of holes and electrons and broad recombination zone. The optimized deep-blue OLED showed a maximum luminance of 5780 cd/m(2) at 10.5 V, maximum external quantum efficiency of 4.68%, a maximum current efficiency of 5.22 cd/A, and Commission Internationale d'Eclairage coordinates of (0.15, 0.09). This deep-blue OLED with D-EML also showed higher efficiency by a factor of 1.4 and 1.3 at 1 mA/cm(2) than the control devices with single-EML using MADN and DNBN, respectively. (C) 2010 Elsevier B. V. All rights reserved.
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Related Researcher
- Kim, Young Kwan
- Engineering (Applied Science)