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21‐4: Highly Efficient Near‐Infrared Phosphorescent OLEDs
Author(s) -
Ji Zhiqiang,
Margulies Eric,
Lu Tongxiang,
Boudreault Pierre-Luc T.,
Alleyne Bert,
Brown Julie J.
Publication year - 2021
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 - 10.1002/sdtp.14663
Subject(s) - phosphorescent organic light emitting diode , oled , phosphorescence , optoelectronics , full width at half maximum , materials science , infrared , quantum efficiency , electroluminescence , wavelength , optics , physics , fluorescence , nanotechnology , layer (electronics)
We report highly efficient near‐infrared (NIR) phosphorescent OLEDs. In particular, we report PHOLED performance with emission peak wavelength at ~800 nm (FWHM=65 nm and PLQY=0.36) with a maximum EQE (EQE max ) of 9.7%, and an EQE of 8.8% at 10 mA/cm 2 (EQE 10mA/cm2 ). Its narrow electroluminescence spectrum results in cal. >83% of emission is above 780 nm and >97% of emission is above 750 nm. This device shows the best performance among reported NIR OLEDs.