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.
| Original language | English |
|---|---|
| Article number | 633315 |
| Journal | Proceedings of SPIE - The International Society for Optical Engineering |
| Volume | 6333 |
| DOIs | |
| State | Published - 2006 |
| Event | Organic Ligh Emitting Materials and Devices X - San Diego, CA, United States Duration: 2006.08.13 → 2006.08.16 |
UN SDGs
This output contributes to the following UN Sustainable Development Goals (SDGs)
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SDG 7 Affordable and Clean Energy
Keywords
- Device, carrier trapping
- Efficiency
- Electrophosphorescent
- Exciton diffusion
- Lifetime
- Mobility
- Recombination
Quacquarelli Symonds(QS) Subject Topics
- Materials Science
- Computer Science & Information Systems
- Mathematics
- Engineering - Electrical & Electronic
- Engineering - Petroleum
- Data Science
- Physics & Astronomy
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