半导体光子学与技术, 1999, 5 (3): 161, 网络出版: 2011-08-08
Enhanced Efficiency and Durability of Organic Electroluminescent Devices by Doping in Emitting Layer
Enhanced Efficiency and Durability of Organic Electroluminescent Devices by Doping in Emitting Layer
摘要
Abstract
Remarkable improvement in efficiency and stability has been observed in a doped organic electroluminescence device,which consists of a holetransport layer,an electron-transport layer and a luminescent layer.The holetransport layer is a N,N‘-bis(3-methyphenyl)-N,N‘-diphenylenzidine film,The doped emitting layer consists of 8-(quinolinolate)-aluminum as the host and rubrene as the emission dopant.The doed device demonstrated a brighness in excess of 40000cd/m^2 and the maximum external quantum efficiency of 3.4%,which is about six times and four times respectively greater than those of the undoped device,For no packaged deviced,a luminance half-life on the order of about 230h has been achieved under a constant current density of 15mA/cm^2,starting at 500cd/m^2 at the room temperature.
HUANG Jing-song, LI Chuan-nan, XIE Zhi-yuan, YANG Kai-xia, HOU Jing-ying, LIU Shi-yong. Enhanced Efficiency and Durability of Organic Electroluminescent Devices by Doping in Emitting Layer[J]. 半导体光子学与技术, 1999, 5(3): 161. HUANG Jing-song, LI Chuan-nan, XIE Zhi-yuan, YANG Kai-xia, HOU Jing-ying, LIU Shi-yong. Enhanced Efficiency and Durability of Organic Electroluminescent Devices by Doping in Emitting Layer[J]. Semiconductor Photonics and Technology, 1999, 5(3): 161.