光栅微结构提高有机电致发光器件光取出效率的研究

来源 :中国光学学会纤维光学与集成光学专业委员会全国第15次光纤通信暨第16届集成光学学术会议 | 被引量 : 0次 | 上传用户：liujm1006

【摘要】

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【作者】

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白昱金玉刘岳峰冯晶孙洪波

【机构】

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吉林大学电子科学与工程学院,长春,130012

【出处】

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中国光学学会纤维光学与集成光学专业委员会全国第15次光纤通信暨第16届集成光学学术会议

【发表日期】

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2011年1期

【关键词】

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光栅微结构有机电致发光器件光取出效率

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　　有机电致发光器件(OLED)由于在全色显示和固态照明方面的潜在应用,近年来受到了广泛关注,但其效率问题仍是被关注的热点.传统的平板OLED,由于有部分能量耦合成为表面等离子体(spp)后以热能的形式散失掉,而且存在器件内部波导的损耗,只有20％左右的光子能够出射.我们在器件内部用激光全息技术引入了周期性的一维光栅结构,通过光栅使spp再次以光子的形式出射,同时用光栅的调制作用来减少有机层造成的导波损失,进而提高了光取出效率.器件结构为ITO/PVK：m-MTDATA(70nm)/NPB (20nrn)/Alq(50nm)/LiF(0.5nm)/Al.其中在PVK掺杂m-MTDATA这一层进行激光双光束干涉烧蚀,PVK和m-MTDATA的掺杂比为10∶1.另外制备了经典结构OLED器件作为对比,结构为ITO/m-MTDATA(30nm)/NPB(20nm)/Alq(50nm)/LiF(0.5nm)/Al.

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光栅微结构提高有机电致发光器件光取出效率的研究

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