Open AccessPolarized organic light-emitting device on a flexible giant birefringent optical reflecting polarizer substrate
Author(s) -
Byoungchoo Park,
Chan Hyuk Park,
Mina Kim,
Min−Koo Han
Publication year - 2009
Publication title -
optics express
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.394
H-Index - 271
ISSN - 1094-4087
DOI - 10.1364/oe.17.010136
Subject(s) - polarizer , optics , birefringence , materials science , oled , polarization (electrochemistry) , optoelectronics , linear polarization , perpendicular , electroluminescence , brightness , substrate (aquarium) , physics , laser , chemistry , geometry , mathematics , layer (electronics) , composite material , oceanography , geology
We present the results of a study of highly linear polarized light emissions from an Organic Light-Emitting Device (OLED) that consisted of a flexible Giant Birefringent Optical (GBO) multilayer polymer reflecting polarizer substrate. Luminous Electroluminescent (EL) emissions over 4,500 cd/m(2) were produced from the polarized OLED with high peak efficiencies in excess of 6 cd/A and 2 lm/W at relatively low operating voltages. The direction of polarization for the emitted EL light corresponded to the passing (ordinary) axis of the GBO-reflecting polarizer. Furthermore, the estimated polarization ratio between the brightness of two linearly polarized EL emissions parallel and perpendicular to the passing axis could be as high as 25 when measured over the whole emitted luminance range.