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中文摘要：
采用蓝色磷光染料bis [ （4,6-diflourophenyl）-pyridinato-N, C2 ＇ ） ] （picolinato） Iridium （III） （FIrpic）和黄色磷光染料bis[ 2- （4-tertbutylphenyl） benzothiazolato-N, C2, ] iridium （acetylacetonate） [ （t-bt） 2 Ir （acac） ] 为超薄层，制备了结构为ITO/NPB/mCP/（t-bt） 2 Ir （acac）/mCP/Flrpic/mCP/TPBi/Mg ： Ag的白色有机电致发光器件。通过调节磷光染料双超薄层Hrpic和（t-bt）。Ir（acac）的厚度，优化了白光器件的性能。结果表明，白光器件的最高电流效率为13．08cd／A，最高功率效率为7．21 1m／W，发光光谱稳定，在9V时得到色坐标为（0．33，0．33）的标准白光，并且在较宽的电压范围内仅有（±0．08，±0．08）变化。这是由于超薄层Flrpic和（t-bt）。Ir（acac）形成的陷阱效应直接俘获电子和空穴，从而将载流子复合区域限制在一定范围内，不仅有利于增加激子的辐射发光效率，且提高了光谱的稳定性。
英文摘要：
The white organic light-emitting devices （OLEDs） with a structure of ITO/NPB/mCP/（t-bt）2Ir （acac）/mCP/FIrpic/mCP/TPBi/Mg ： Ag were fabricated using a blue and yellow phosphorescent dyes of bis[（4,6- diflourophenyl）-pyridinato-N,C2＇）]（picolinato） Iridium（III） （FIrpic） and bis[2-（4-tertbutylphenyl）benzothiazola- to-N, C2, ]iridium （acetylacetonate） [ （t-bt） 2 Ir （acac） ] as ultrathin layers, respectively. The performance of white OLEDs has been optimized by adjusting the film thickness of （t-bt）2Ir（acac） and Firpic. The results showed that a pure white organic light-emission was obtained with a current efficiency of 13.08 cd/A and a power efficiency of 7.21 lm/W. The CIE （Commissions Internationale De L＇Eclairage） coordinates near （0.33,0.33） was observed at 9 V with a slight variation of （±0.08, ±0.08） in a wide range of voltages. The high power efficiency and stable electroluminescence were attributed to the confining emission zone function of direct carrier trapping in the ultrathin layers.
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