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Highly Efficient Organic Blue‐and White‐Light‐Emitting Devices Having a Carrier‐ and Exciton‐Confining Structure for Reduced Efficiency Roll‐Off
Author(s) -
Su ShiJian,
Gonmori Eisuke,
Sasabe Hisahiro,
Kido Junji
Publication year - 2008
Publication title -
advanced materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 10.707
H-Index - 527
eISSN - 1521-4095
pISSN - 0935-9648
DOI - 10.1002/adma.200801375
Subject(s) - oled , materials science , exciton , optoelectronics , luminance , quantum efficiency , electrical efficiency , white light , optics , power (physics) , nanotechnology , layer (electronics) , physics , condensed matter physics , quantum mechanics
Highly efficient blue and white OLEDs with reduced efficiency roll‐off based on a carrier‐ and exciton‐confining structure are developed. Record power efficiencies of 46 and 44 lm W −1 and an external quantum efficiency of 25% at the illumination‐relevant luminance of 1000 cd m −2 are achieved for the blue and white OLEDs, respectively, without the use of any outcoupling techniques.