Thin Solid Films, Vol.515, No.12, 5095-5098, 2007
Organic light-emitting devices with a mixed layer acting as a hole transport and as an emitting/electron transport layer
The electrical and the optical properties of organic light-emitting devices (OLEDs) with a mixed layer acting as a hole transport layer and as an emitting layer/electron transport layer were investigated. The OLEDs with a mixed layer showed the highest efficiency, and the emitting color of the OLEDs was pure yellow. The enhancement of the luminous efficiency in the OLEDs with a mixed layer was attributed to a decrease in hole mobility. (c) 2006 Elsevier B.V. All rights reserved.