Journal
CURRENT APPLIED PHYSICS
Volume 7, Issue 3, Pages 300-304Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.cap.2006.09.002
Keywords
organic electroluminescent devices; top-emitting; semitransparent cathode; microcavity effect
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RGB pixels by microcavity top-emitting organic light-emitting diode (TOLED) is beneficial to both minimizing the loss of light and improving the color purity and the efficiency. Based on the multi-emitting layers, white organic light-emitting diodes (OLEDs) and microcavity TOLEDs were prepared. TOLEDs were fabricated using Ag/ITO as the reflector and adjusting layer, Al/Ag as semi-transparent cathode, Alq:DCJTB/TBADN:TBPe/Alq:C545 as white light emitting layer. By adjusting the thickness of ITO, optical length of cavity and the color of the device have been changed. So we get RGB tricolor devices. The peak wavelengths are 476 nm, 539 nm, 601 nm, Commission Internationale d'Eclairage (CIE) coordinates are (0.133,0.201), (0.335,0.567), (0.513,0.360), FWHM are 32 nm, 50 run, 73 nm for blue, green and red, respectively. (c) 2006 Elsevier B.V. All rights reserved.
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