Role of carrier mobility, exciton diffusion, and their interplay for charge balance and improved properties of organic electrophosphorescent device
- Authors
- Chin, Byung Doo; Lee, Soo-Hyeong; Kim, Jai Kyeong; Lee, Chang Hee
- Issue Date
- 2006
- Publisher
- SPIE-INT SOC OPTICAL ENGINEERING
- Citation
- Conference on Organic Light Emitting Materials and Devices X, v.6333
- Abstract
- In this paper, we demonstrated that controlled charge trapping, both at the emission layer and charge transport layer with energy level alignment, is essential for charge-balanced and effective electrophosphorescent organic light-emitting device (OLED). Conditions for enhanced of efficiency and lifetime of OLED were obtained with graded doping profile at the light-emission layers (varied host-dopant concentration) and different hole (exciton) blocking materials. Conceptual device physics presented in this study can be applied at an initial design of charge-confined, balanced structure of highly efficient electrophosphorescent devices.
- ISSN
- 0277-786X
- URI
- https://pubs.kist.re.kr/handle/201004/116732
- DOI
- 10.1117/12.680411
- Appears in Collections:
- KIST Conference Paper > 2006
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