Multifunctional Triphenylamine/Oxadiazole Hybrid as Host and Exciton-Blocking Material: High Efficiency Green Phosphorescent OLEDs Using Easily Available and Common Materials
文献类型：期刊论文
| 作者 | Tao YT ; Wang QA ; Yang CL ; Zhong C ; Qin JG ; Ma DG |
| 刊名 | advanced functional materials
 |
| 出版日期 | 2010 |
| 卷号 | 20期号:17页码:2923-2929 |
| 关键词 | LIGHT-EMITTING DEVICES ORGANIC ELECTROLUMINESCENT DEVICES CYCLOMETALATED IRIDIUM COMPLEXES OPTOELECTRONIC PROPERTIES BIPOLAR HOST ELECTROPHOSPHORESCENCE DERIVATIVES EMISSION DIODES MOLECULE |
| ISSN号 | 1616-301x |
| 通讯作者 | tao yt |
| 中文摘要 | a new triphenylamine/oxadiazole hybrid, namely m-tpa-o-oxd, formed by connecting the meta-position of a phenyl ring in triphenylamine with the ortho-position of 2,5-biphenyl-1,3,4-oxadiazole, is designed and synthesized. the new bipolar compound is applicable in the phosphorescent organic light-emitting diodes (pholeds) as both host and exciton-blocking material. by using the new material and the optimization of the device structures, very high efficiency green and yellow electrophosphorescence are achieved. for example, by introducing 1,3,5-tris(n-phenylbenzimidazol-2-yl)benzene (tpbi) to replace 2, 9-dimethyl-4,7-diphenyl-1, 10-phenanthroline (bcp)/tris(8-hydroxyquinoline)aluminium (alq(3)) as hole blocking/electron transporting layer, followed by tuning the thicknesses of hole-transport 1, 4-bis[(1-naphthylphenyl)amino]biphenyl (npb) layer to manipulate the charge balance, a maximum external quantum efficiency (eta(eqe,max)) of 23.0% and a maximum power efficiency (eta(p,max)) of 94.3 lm w-1 are attained for (ppy)(2)ir(acac) based green electrophosphorescence. subsequently, by inserting a thin layer of m-tpa-o-oxd as self triplet exciton block layer between hole-transport and emissive layer to confine triplet excitons, a eta(eqe,max) of 23.7% and eta(p,max) of 105 lm w-1 are achieved. this is the highest efficiency ever reported for (ppy)(2)ir(acac) based green pholeds. furthermore, the new host m-tpa-o-oxd is also applicable for other phosphorescent emitters, such as green-emissive ir(ppy)(3) and yellow-emissive (fbi)(2)ir(acac). a yellow electro-phosphorescent device with eta(eqe,max) of 20.6%, eta(c,max) of 62.1 cd a(-1), and eta(p,max) of 61.7 lm w-1, is fabricated. to the author's knowledge, this is also the highest efficiency ever reported for yellow pholeds. |
| 收录类别 | SCI收录期刊论文 |
| 语种 | 英语 |
| WOS记录号 | WOS:000282288600020 |
| 公开日期 | 2012-04-25 |
| 源URL | [http://ir.ciac.jl.cn/handle/322003/43435]  |
| 专题 | 长春应用化学研究所_长春应用化学研究所知识产出_期刊论文 |
| 推荐引用方式 GB/T 7714 | Tao YT,Wang QA,Yang CL,et al. Multifunctional Triphenylamine/Oxadiazole Hybrid as Host and Exciton-Blocking Material: High Efficiency Green Phosphorescent OLEDs Using Easily Available and Common Materials[J]. advanced functional materials,2010,20(17):2923-2929. |
| APA | Tao YT,Wang QA,Yang CL,Zhong C,Qin JG,&Ma DG.(2010).Multifunctional Triphenylamine/Oxadiazole Hybrid as Host and Exciton-Blocking Material: High Efficiency Green Phosphorescent OLEDs Using Easily Available and Common Materials.advanced functional materials,20(17),2923-2929. |
| MLA | Tao YT,et al."Multifunctional Triphenylamine/Oxadiazole Hybrid as Host and Exciton-Blocking Material: High Efficiency Green Phosphorescent OLEDs Using Easily Available and Common Materials".advanced functional materials 20.17(2010):2923-2929. |
入库方式： OAI收割
来源：长春应用化学研究所
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