Hybrid white organic light-emitting diodes of small molecule and polymer emitters

A hybrid white organic light emitting diode (HWOLED) with a small molecule fluorescent blue emitter and polymer yellow emitter was developed using a stamp transfer printing process. Double emitting layer stack structure was fabricated and the effect of stack sequence on the device performances of HWOLED was investigated. Balanced white emission was observed in the HWOLED with blue/yellow stack structure and a current efficiency of 10.4 cd/A was obtained.

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► Hybrid white organic light emitting diodes with two emitting layers.
► Two emitting layer structure by vacuum evaporation and stamp transfer printing.
► Effect of stack sequence on the device performances of hybrid white device.