摘要
采用掺杂薄层作为亚单层有机发光技术,利用沉积在有机发光器件发光层中的亚单层分子[2-methyl-6-[2-(2,3,6,7-tetrahydro-1H,5H-benzo[ij]quinolizin-9-yl)ethenyl]-4H-pyran-4-ylidene]propane-dinitrile(DCM2)作为探针,同时改变DCM2层的位置,制备了四种亚单层结构的有机发光器件,对有机发光器件中激子的形成与扩散进行了研究,通过对各器件不同条件下的电致发光谱、发光强度和发光效率的对比研究,得到在N,N′-bis-(1-naphthyl)-N,N′-diphenyl-1,1′-biph-enyl-4,4′-diamine(NPB)/(8-hydroxyquinoline)aluminium(Alq)异质结界面处引入亚单层DCM2可以使DCM2分子获得的激子数量最多,获得了高效率的黄色有机发光器件.从其中总结规律,对有机发光器件制作有一定的指导作用.
A [2-methyl-6-[2-（2,3,6,7-tetrahydro-1H,5H-benzo[ij] quinolizin-9-yl）ethenyl]-4H-pyran-4-ylidene] propane-dinitrile（DCM2）sub-monolayer was inserted in the electron transporting layer of organic light emitting devices（OLEDs）.Based on the different position of deposited DCM2 sub-monolayer,the electroluminescence（EL）spectra,brightness intensity and current efficiency of these four devices show that DCM2 sub-monolayer located at the N,N＇-bis-（1-naphthyl）-N,N＇-diphenyl-1,1＇-biph-enyl-4,4＇-diamine（NPB）/（8-hydroxyquinoline）aluminium（Alq）hetero-junction interface obtained most excitons.The obtained results will be helpful for the optimal design and operation of OLEDs.
出处
《光子学报》
EI
CAS
CSCD
北大核心
2010年第10期1734-1737,共4页
Acta Photonica Sinica
基金
泉州市优秀人才培养专项经费项目(08A23)
福建省科技计划项目省属高校项目(2008F5054)
泉州市科技局基金(2007G8)资助
关键词
有机电致发光器件
亚单层
激子
Organic light emitting devices
Sub-monolayer
Exciton
