Efficient multiple triplet quantum well structures in organic light-emitting devices
Efficient multiple triplet quantum well structures in organic light-emitting devices
复制标题
DOI：
10.1063/1.3224190
复制
发表时间：
2009-09
影响因子：
4
通讯作者：
T. Park;W. Jeon;Jinwoo Choi;R. Pode;Jin Jang;J. Kwon
中科院分区：
文献类型：
--
作者：
T. Park;W. Jeon;Jinwoo Choi;R. Pode;Jin Jang;J. Kwon
我们展示了多量子阱（MQW）结构与电荷控制层（CCL），以生产高效的红色磷光有机发光器件（OLED）。从单个到五个量子威尔斯的各种三重态量子阱器件使用宽带隙空穴和电子传输层、窄带隙主体和掺杂剂材料以及CCL来实现。这种MQW器件中的三重态能量被限制在发射层处。在双量子阱结构下，器件的最大外量子效率为14.8%。所描述的MQW器件概念已经被提出对未来的OLED显示器和照明应用非常有用。
We demonstrate the multiple quantum well (MQW) structures with the charge control layers (CCLs) to produce highly efficient red phosphorescent organic light-emitting devices (OLEDs). Various triplet quantum well devices from a single to five quantum wells are realized using wide band-gap hole and electron transporting layers, narrow band-gap host and dopant materials, and CCLs. Triplet energies in such MQW devices are confined at the emitting layers. The maximum external quantum efficiency of 14.8% with a two quantum well device structure is obtained. The described MQW device concept has been proposed to be very useful to future OLED display and lighting applications.