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Charge Balance and Exciton Confinement in Phosphorescent Organic Light Emitting Diodes
Author(s) -
Coburn Caleb,
Lee Jaesang,
Forrest Stephen R.
Publication year - 2016
Publication title -
advanced optical materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.89
H-Index - 91
ISSN - 2195-1071
DOI - 10.1002/adom.201600067
Subject(s) - phosphorescence , exciton , oled , materials science , charge (physics) , diode , optoelectronics , balance (ability) , engineering physics , nanotechnology , physics , optics , condensed matter physics , quantum mechanics , fluorescence , medicine , layer (electronics) , physical medicine and rehabilitation
Thin red “sensing layers” are used to measure exciton confinement and charge balance in blue phosphorescent light emitting diodes. The device stability and efficiency are improved by preventing triplet exciton leakage from the emission zone. The results are explained using a quantitative model for charge and exciton transport.