Highly power efficient organic light-emitting devices enabled by phosphorescent and p-i-n technologies
- 31 August 2006
- proceedings article
- Published by SPIE-Intl Soc Optical Eng
- Vol. 6333, 633311-633311-8
- https://doi.org/10.1117/12.679335
Abstract
Organic light-emitting devices (OLEDs) containing highly efficient phosphorescent emitters and highly conductive doped organic transport layers were studied. Saturated red devices with luminous efficiency of 15 cd/A operate at 2. Additionally, two high-efficiency red OLEDs were serially connected and vertically stacked to create a stacked OLED having a luminous and power efficiency (at 1,000 cd/m2) of 28 cd/A and 12 lm/W, respectively. The electrical connection between the two OLEDs is enabled by molecular p- and n-type doped organic transport layers. The single emissive layer red OLED has a projected lifetime (time to half initial luminance) of ~150,000 hrs from an initial brightness of 500 cd/m2. The stacked device shows very similar lifetime characteristics when driven at similar currents, which results in significantly prolonged lifetime of ~260,000 hrs at an initial luminance of 500 cd/m2.This publication has 0 references indexed in Scilit: