High-efficiency phosphorescent polymer light-emitting devices
| Autor: | Mitsunori Suzuki, Shizuo Tokito, Fumio Sato, Kourou Shirane, Motoaki Kamachi |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
chemistry.chemical_classification
White emission Materials science business.industry Carbazole General Chemistry Polymer Condensed Matter Physics Blue emission Electronic Optical and Magnetic Materials Biomaterials chemistry.chemical_compound chemistry Materials Chemistry Optoelectronics Quantum efficiency Electrical and Electronic Engineering Phosphorescence business Layer (electronics) |
| Zdroj: | Organic Electronics. 4:105-111 |
| ISSN: | 1566-1199 |
| Popis: | In this paper, we describe the performance of polymer light-emitting devices (PLEDs) that are based on phosphorescent polymers involving a carbazole unit and an iridium-complex unit. The PLEDs exhibit red, green or blue emission, depending on the phosphorescent polymer used in the emissive layer. We achieved highly external quantum efficiencies of 5.5%, 9% and 3.5% in respective red, green and blue PLEDs by selecting the electron transport material for the emissive layer and optimizing the content of the iridium-complex unit in the phosphorescent polymer chain. Furthermore, we demonstrated white emission in PLEDs by using blue-phosphorescent and red-phosphorescent polymers. An external quantum efficiency of 4.5% was obtained for this emission. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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