Polarized organic light-emitting device on a flexible giant birefringent optical reflecting polarizer substrate.
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.
Park
Byoungchoo
B
Department of Electrophysics, Kwangwoon Univ, Wolgye-Dong, Nowon-gu, Seoul, Korea. bcpark@kw.ac.kr
Park
Chan Hyuk
CH
Kim
Mina
M
Han
Mi-Young
MY
D017076:Computer-Aided Design; D004867:Equipment Design; D019544:Equipment Failure Analysis; D008029:Lighting / Q000295:instrumentation*; D008163:Luminescent Measurements / Q000295:instrumentation*; D009930:Organic Chemicals / Q000737:chemistry*; D012031:Refractometry / Q000295:instrumentation* / Q000379:methods; D015203:Reproducibility of Results; D012666:Semiconductors; D012680:Sensitivity and Specificity
D009930:Organic Chemicals