Red Phosphorescent Organic Light-Emitting Diodes Based on the Simple Structure
- Authors
- Seo, JH[Seo, Ji Hyun]; Lee, SJ[Lee, Seok Jae]; Kim, BY[Kim, Bo Young]; Choi, EY[Choi, Eun Young]; Han, WK[Han, Wone Keun]; Lee, KH[Lee, Kum Hee]; Yoon, SS[Yoon, Seung Soo]; Kim, YK[Kim, Young Kwan]
- Issue Date
- May-2012
- Publisher
- AMER SCIENTIFIC PUBLISHERS
- Keywords
- Organic Light-Emitting Diode; Phosphorescence; Sim
- Citation
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY, v.12, no.5, pp.4190 - 4193
- Indexed
- SCIE
SCOPUS
- Journal Title
- JOURNAL OF NANOSCIENCE AND NANOTECHNOLOGY
- Volume
- 12
- Number
- 5
- Start Page
- 4190
- End Page
- 4193
- URI
- https://scholarworks.bwise.kr/skku/handle/2021.sw.skku/65456
- DOI
- 10.1166/jnn.2012.5913
- ISSN
- 1533-4880
- Abstract
- We demonstrated that the simple layered red phosphorescent organic light-emitting diodes (OLEDs) are possible to have high efficiency, low driving voltage, stable roll-off efficiency, and pure emission color without hole injection and transport layers. We fabricated the OLEDs with a structure of ITO/CBP doped with Ir(pq)(2)(acac)/BPhen/Liq/Al, where the doping concentration of red dopant, Ir(pq)(2)(acac), was varied from 4% to 20%. As a result, the quantum efficiencies of 13.4, 11.2, 16.7, 10.8 and 9.8% were observed in devices with doping concentrations of 4, 8, 12, 16 and 20%, respectively. Despite of absence of the hole injection and transport layers, these efficiencies are superior to efficiencies of device with hole transporting layer due to direct hole injection from anode to dopant in emission layer.
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Collections - Science > Department of Chemistry > 1. Journal Articles
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