66.3: Hybrid White OLEDs for General Lighting | Zendy

Loebl Peter | Zendy; Goldmann Claudia | Zendy; Elsbergen Volker | Zendy; Grabowski Stefan | Zendy; Boerner Herbert | Zendy; Bertram Dietrich | Zendy

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66.3: Hybrid White OLEDs for General Lighting

Author(s) -

Loebl Peter,

Goldmann Claudia,

Elsbergen Volker,

Grabowski Stefan,

Boerner Herbert,

Bertram Dietrich

Publication year - 2011

Publication title -

sid symposium digest of technical papers

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.351

H-Index - 44

eISSN - 2168-0159

pISSN - 0097-966X

DOI - 10.1889/1.3621506

Subject(s) - materials science , extractor , optoelectronics , coupling (piping) , oled , macro , foil method , optics , layer (electronics) , computer science , physics , composite material , engineering , process engineering , programming language

OLEDs for general lighting require both high efficacy and good lumen maintenance. Hybrid stacks combining fluorescent blue and phosphorescent red and green emitters are a very good choice for both long lifetime and good efficacy values: 31 lm/W are demonstrated for a cold white color point. 44 lm /W are measured with improved out‐coupling (ILO) using a scattering foil and 60 lm/W are demonstrated using a macro‐extractor for light out‐coupling. For warm white we realized 34 lm/W (with ILO 45 lm/W and 64 lm /W using a macro‐extractor). LT 50 lumen maintenance is for both stacks better than 30,000 hours.

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