Abstract
New white polymeric light-emitting diodes from phosphorescent single polymer systems have been developed using a blue-light-emitting fluorene monomer copolymerized with a red-light-emitting phosphorescent dye, and end-capped with a green-light-emission dye. All of the copolymers have good thermal stability with 5% weight loss temperatures at 380-413 °C and glass transition temperatures at 75137 °C We obtained white-light-emission devices by adjusting the molar ratio of the comonomers with a structure of indium tin oxide/poly(3,4-ethylenedioxythiophene): poly(styrene sulfonic acid)/polyvinylcarbazole (PVK)/emission layer/Ca/Ag. The highest brightness in such a device configuration is 300 cd/m2 at a current density of 2900 A/m2 with high white color quality (Commission Internationale de l'Eclairage (CIE) coordinates of (0.33, 0.34)).
Original language | English |
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Pages (from-to) | 464-472 |
Number of pages | 9 |
Journal | Journal of Polymer Science, Part A: Polymer Chemistry |
Volume | 46 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2008 Jan 15 |
All Science Journal Classification (ASJC) codes
- Polymers and Plastics
- Organic Chemistry
- Materials Chemistry