| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1264373 | Organic Electronics | 2008 | 6 Pages |
Abstract
A highly efficient deep blue polymer light-emitting diode based on poly(9,9-dioctylfluorene) is demonstrated. The performance is found to increase significantly with the molecular weight. Two different molecular weights are compared, one is 71,000 and the other is 365,000. The electroluminescent efficiency and color stability are improved by slightly doping hole traps into the emission layer and bilayer structure. The maximum efficiency is 3.8 cd/A with the corresponding external quantum efficiency of 3.7% at deep blue with Commission Internationale de L’Eclairage (CIE) coordinate at (0.15, 0.09). Stable blue emission is maintained up to 6600 cd/m2 without growth of green shoulder in emission spectrum.
Related Topics
Physical Sciences and Engineering
Chemistry
Chemistry (General)
Authors
Shin-Rong Tseng, Shiuan-Yi Li, Hsin-Fei Meng, Yi-Hsiang Yu, Chia-Ming Yang, Hua-Hsien Liao, Sheng-Fu Horng, Chian-Shu Hsu,