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主体材料对绿色有机发光二极管性能的影响

Influence of Host Material on Performances of Green Organic Light Emitting Diodes

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摘要

为研究主体材料对绿色有机发光二极管性能的影响,选择能级匹配的电子传输材料1,3,5-三(6-(3-(吡啶-3-基)苯基)吡啶-2-基)苯(Tm3PyP26PyB)作主体材料制备了单发光层(EML)器件,与以双极性主体材料9-(4-叔丁基苯基)-3,6-双(三苯基甲硅烷基)-9H-咔唑(CzSi)制备的单发光层器件作对比。另外,采用空穴传输能力较好的4,4'',4″-三(咔唑-9-基)三苯胺(TcTa)作第一发光层的主体材料,Tm3PyP26PyB和CzSi分别作第二发光层的主体材料制备双发光层器件进行对比。相比于Tm3PyP26PyB,CzSi为双极性主体材料,以CzSi为双极性主体材料有利于促进器件中载流子平衡并拓宽复合区间,以其制备的单、双发光层器件均具有较好的性能。以CzSi制备的单发光层器件的最大亮度、电流效率、功率效率分别为8634 cd/m 2、18。70 cd/A、16。78 lm/W;双发光层器件的最大亮度、电流效率、功率效率分别为10770 cd/m 2、30。12 cd/A、30。52 lm/W。

Abstract

To study the influence of host material on the performances of organic light emitting diodes, a series of single-emitting layer (EML) devices are prepared by selecting energy-matching electron transport material Tm3PyP26PyB as electron-type host material and comparing it with single-EML devices prepared by using the bipolar host material CzSi。 Additionally, TcTa, which has better hole transporting ability, is used as the first EML’s host material while Tm3PyP26PyB and CzSi are used as the second EML’s host materials, respectively, to prepare a series of double-EML devices for comparison。 In comparison with Tm3PyP26PyB, CzSi has bipolar properties that make it superior in balancing holes and electrons and in broadening recombination zones。 This allows better performance to be obtained from single-EML and double-EML devices。 Consequently, the optimized single-EML device using CzSi host material has a maximum brightness, current efficiency, and power efficiency of up to 8634 cd/m 2, 18。70 cd/A, and 16。78 lm/W, respectively; while the maximum brightness, current efficiency, and power efficiency of the optimized double-EML device with TcTa and CzSi host materials are up to 10770 cd/m 2, 30。12 cd/A, and 30。52 lm/W, respectively。

补充资料

DOI:

所属栏目:光学器件

基金项目:吉林省发展和改革委员会项目;

收稿日期:2019-03-14

修改稿日期:2019-05-13

网络出版日期:2019-11-01

作者单位    点击查看

李真真:长春理工大学化学与环境工程学院, 吉林 长春 130022
刘伟强:长春理工大学化学与环境工程学院, 吉林 长春 130022
武瑞霞:长春理工大学化学与环境工程学院, 吉林 长春 130022
李云辉:长春理工大学化学与环境工程学院, 吉林 长春 130022
邵晶:长春理工大学化学与环境工程学院, 吉林 长春 130022

联系人作者:邵晶(shaojing7079@163.com)

备注:吉林省发展和改革委员会项目;

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引用该论文

Li Zhenzhen,Liu Weiqiang,Wu Ruixia,Li Yunhui,Shao Jing. Influence of Host Material on Performances of Green Organic Light Emitting Diodes[J]. Laser & Optoelectronics Progress, 2019, 56(22): 222302

李真真,刘伟强,武瑞霞,李云辉,邵晶. 主体材料对绿色有机发光二极管性能的影响[J]. 激光与光电子学进展, 2019, 56(22): 222302

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