Abstract
We report on white organic light-emitting diodes (WOLEDs) based on polyvinylcarbazole (PVK) doped with 1,1-bis((di-4-tolylamino)phenyl)cyclohexane (TAPC) and perylene, and investigate the luminescence mechanism of the devices. The chromaticity of light emission can be tuned by adjusting the concentration of the dopants. White light with the Commission Internationale de L'Eclairage (CIE) coordinates of (0.33, 0.34) is achieved by mixing the yellow electromer emission of TAPC and the blue monomer emission of perylene from the device ITO/PVK: TAPC: perylene (100:9:1 in wt.) (100 nm)/tris-(8-hydroxyquinoline aluminum (Alq 3) (10 nm)/Al. The device exhibits a maximal luminance of 3727 cd/m 2 and a current efficiency of 2 cd/A.
Original language | English |
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Article number | 088504 |
Journal | Chinese Physics B |
Volume | 21 |
Issue number | 8 |
DOIs | |
Publication status | Published - Aug 2012 |
Keywords
- Commission Internationale de LEclairage (CIE)
- electromer emission
- monomer emission
- white organic light-emitting diodes