Highly efficient white polymer light-emitting devices based on wide bandgap polymer doped with blue and yellow phosphorescent dyes
Highly efficient white polymer light-emitting devices based on wide bandgap polymer doped with blue and yellow phosphorescent dyes
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基于掺杂蓝色和黄色磷光染料的宽带隙聚合物的高效白色聚合物发光器件
DOI：
10.1364/ol.35.002436
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发表时间：
2010-07-15
期刊：
影响因子：
3.6
通讯作者：
Liu, Shiyong
中科院分区：
文献类型：
--
作者：
Cheng, Gang;Fei, Teng;Liu, Shiyong
我们以宽禁带聚合物P36 HCTPSi为基质，引入蓝黄双色体系获得白色发光，实现了高发光效率的白色聚合物发光器件。磷光体掺杂剂双[（4，6-二氟苯基）吡啶-N，C（2）]-（吡啶基）铱（III）（FIrpic）和双（2-（9，9 ′-螺[芴]-7-基）吡啶-N，C（2 ′ ′）乙酰丙酮合铱（III）[Ir（SBFP）（2）（acac）]分别用作蓝色和黄色发光体。Ir（SBFP）（2）（acac）浓度对器件的电致发光光谱和发光效率均有影响，低浓度（0.4wt.%）在1000 cd/m（2）下显示出白色发射，LE为24.1 cd/A，而具有高浓度（4 wt.%）的一种发射黄白色光，在1000 cd/m2下具有47.3 cd/A的较高LE。(C)2010年美国光学学会
We realize high luminous efficiency (LE) in white polymer light-emitting devices by employing a wide bandgap polymer P36HCTPSi as host and introducing a blue-yellow two-color system for obtaining white emission. Phosphorescent dopants bis[(4,6-difluorophenyl)pyridinato-N,C(2)]-(picolinato) iridium(III) (FIrpic) and iridium(III) bis(2-(9,9'-spirobi[fluorene]-7-yl)pyridine-N,C(2)') acetylacetonate [Ir(SBFP)(2) (acac)] were used as blue and yellow emitters, respectively. Electroluminescent spectra and LE were both affected by Ir(SBFP)(2)(acac) concentration; the device with low concentration (0.4 wt.%) showed white emission with a LE of 24.1 cd/A at 1000 cd/m(2), while the one with high concentration (4 wt.%) emitted yellowish-white light with a higher LE of 47.3 cd/A at 1000 cd/m(2). (C) 2010 Optical Society of America