High-efficiency orange and white phosphorescent organic light-emitting diodes based on homojunction structure
| Autor: | Bingye Chen, Liangmei Zuo, Ren Sheng, Asu Li, Ping Chen, Yu Duan, Yi Zhao |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
business.industry Doping Complementary colors 02 engineering and technology General Chemistry Orange (colour) 010402 general chemistry 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Luminance 0104 chemical sciences Electronic Optical and Magnetic Materials Biomaterials Materials Chemistry OLED Optoelectronics Electrical and Electronic Engineering Homojunction 0210 nano-technology Phosphorescence business Diode |
| Zdroj: | Organic Electronics. 44:183-188 |
| ISSN: | 1566-1199 |
| DOI: | 10.1016/j.orgel.2017.02.019 |
| Popis: | We demonstrate high-efficiency orange and white phosphorescent organic light-emitting diodes based on homojunction structure. Excellent performance is realized by using step-graded p- and n-type doping structure in orange homojunction device. The resulting orange homojunction device exhibits a maximum current efficiency of 30.0 cd/A and low efficiency roll-off. The improvements are mainly attributed to the utilization of step-graded doped profile, which facilitates balanced charge carrier injection and transport. Moreover, one optimized white homojunction device based on two complementary colors shows a maximum efficiency of 15.4 cd/A, and superior color-stability in a wide range of luminance. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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