泉州师范学院学报
泉州師範學院學報
천주사범학원학보
Journal of Quanzhou Normal College
2008年
6期
34~36
,共null页
有机电致发光 KCI／A1电极 效率 亮度
有機電緻髮光 KCI／A1電極 效率 亮度
유궤전치발광 KCI／A1전겁 효솔 량도
organic light-emitting devices; KCl/Al cathode; efficiency; brightness
制备了利用KCl／Al作为负电极的有机电致发光器件，器件结构为IT0／NPB／Alq／KCl／Al，KCl层的加入增强了电子注入，当其厚度为1．5nm时，器件的性能最好．与单层Al电极的同类器件相比，此时器件的开启电压由Al电极时的5V降低到了2．5V。器件的亮度在11V时由231cd／m^2提高到15070cd／m^2，器件的发光效率也增加了10倍，达到2．79cd／A．
製備瞭利用KCl／Al作為負電極的有機電緻髮光器件，器件結構為IT0／NPB／Alq／KCl／Al，KCl層的加入增彊瞭電子註入，噹其厚度為1．5nm時，器件的性能最好．與單層Al電極的同類器件相比，此時器件的開啟電壓由Al電極時的5V降低到瞭2．5V。器件的亮度在11V時由231cd／m^2提高到15070cd／m^2，器件的髮光效率也增加瞭10倍，達到2．79cd／A．
제비료이용KCl／Al작위부전겁적유궤전치발광기건，기건결구위IT0／NPB／Alq／KCl／Al，KCl층적가입증강료전자주입，당기후도위1．5nm시，기건적성능최호．여단층Al전겁적동류기건상비，차시기건적개계전압유Al전겁시적5V강저도료2．5V。기건적량도재11V시유231cd／m^2제고도15070cd／m^2，기건적발광효솔야증가료10배，체도2．79cd／A．
Fabricating an organic light-emitting device with high efficiency and brightness thin KCl/Al as cathode. The structure of the devices is ITO/NPB/AIq/KCl/Al, and the insertion of the ultra-thin KCl layer enhances the electron injection in this device. As a result, when the thickness of the KCl layer is 1.5 nm optimized, the OLEDs＇ properties show best,its maximum brightness is 15 070 cd/m^2 at 11 V, while the device with Al cathode exihihit only 231 cd/m^2. And the operating voltage for devices with KCl/Al cathode is lower （2. 5 V） than those of devices with Al cathode （5. 0 V）. Its luminescent efficiency is 10 times than that of devices with Al cathode.
