Efficient green phosphorescent tandem organic light emitting diodes with solution processable mixed hosts charge generating layer
Document Type
Article
Publication Date
10-1-2014
Abstract
A novel solution processable charge generating layer (CGL) that consists of 1,4,5,8,9,11-hexaazatriphenylene hexacarbonitrile (HATCN6)/Poly(N-vinylcarbazole) (PVK): 1,1-bis-(4-bis(4-tolyl)-aminophenyl) cyclohexene (TAPC) for a tandem green phosphorescent organic light emitting diode (PHOLED) is demonstrated. The use of orthogonal solvent to dissolve HATCN6 and PVK:TAPC is the key to overcome the interface erosion problem for the solution processed CGL. The current efficiency of the 2 wt% TAPC mixed with PVK is the highest at 24.2 cd/A, which is more than three-folds higher than that of the single device at 1000 cd/m2.
Keywords
Charge generation layer, Solution-processable, Tandem organic light emitting diodes, Current efficiency
Divisions
Science
Publication Title
Journal of Luminescence
Volume
154
Publisher
Elsevier