Novel electron-type host material for unilateral homogeneous phosphorescent organic light-emitting diodes with low efficiency roll-off
文献类型：期刊论文
| 作者 | Yang, Xiao1; Huang, Hong1; Pan, Biao1; Zhuang, Shaoqing1; Aldred, Matthew P.1; Wang, Lei1; Chen, Jiangshan2; Ma, Dongge2 |
| 刊名 | JOURNAL OF MATERIALS CHEMISTRY
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| 出版日期 | 2012-11-21 |
| 卷号 | 22期号:43页码:23129-23135 |
| ISSN号 | 0959-9428 |
| DOI | 10.1039/c2jm33988a |
| 英文摘要 | Two novel simple electron-transport (ET) type host materials, 2,6-bis(3-(1-phenyl-1H-benzo[d]imidazol-2-yl)phenyl)benzene (MDBIP) and 2,6-bis(3-(1-phenyl-1H-benzo[d]imidazol-2-yl)phenyl) pyridine (MDBIPy) have been designed and synthesized. The two compounds exhibit high decomposition temperatures (T-d: 444 degrees C for MDBIP and 450 degrees C for MDBIPy) and a stable amorphous glassy state (T-g: 108 degrees C for MDBIP and 110 degrees C for MDBIPy). In the typical device ITO/MoO3 (10 nm)/4,4'-bis[N-(1-naphthyl)-N-phenylamino]biphenyl (NPB, 80 nm)/TCTA (5 nm)/Host: Ir(ppy)(3) (9 wt%, 20 nm)/TmPyPB (40 nm)/LiF (1 nm)/Al (100 nm), when MDBIPy was used as host material, the device B showed a maximum efficiency of 21.1%, 75.8 cd A(-1) and 83.6 lm W-1. When MDBIPy was utilized as both the electron transporting and host layer, the unilateral homogeneous device C exhibited a maximum efficiency of 20.6%, 74.2 cd A(-1) and 71.8 lm W-1. More interestingly, device C showed low efficiency roll-off relative to device B. When the brightness of the device is over 1000 cd m(-2), the current efficiency of device C is higher than device B. At a brightness of 5000 cd m(-2), the current efficiency of device C is only roll off 5.6%. These results demonstrate that utilizing electron-transport type host materials to fabricate unilateral homogeneous PhOLEDs is a promising way to simplify the device configuration and optimize the performance of OLED devices. |
| 语种 | 英语 |
| WOS记录号 | WOS:000310721400042 |
| 出版者 | ROYAL SOC CHEMISTRY |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/47505]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wang, Lei |
| 作者单位 | 1.Huazhong Univ Sci & Technol, Wuhan Natl Lab Optoelect, Sch Optoelect Sci & Engn, Wuhan 430074, Peoples R China 2.Chinese Acad Sci, State Key Lab Polymer Phys & Chem, Changchun Inst Appl Chem, Grad Sch, Changchun 130022, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yang, Xiao,Huang, Hong,Pan, Biao,et al. Novel electron-type host material for unilateral homogeneous phosphorescent organic light-emitting diodes with low efficiency roll-off[J]. JOURNAL OF MATERIALS CHEMISTRY,2012,22(43):23129-23135. |
| APA | Yang, Xiao.,Huang, Hong.,Pan, Biao.,Zhuang, Shaoqing.,Aldred, Matthew P..,...&Ma, Dongge.(2012).Novel electron-type host material for unilateral homogeneous phosphorescent organic light-emitting diodes with low efficiency roll-off.JOURNAL OF MATERIALS CHEMISTRY,22(43),23129-23135. |
| MLA | Yang, Xiao,et al."Novel electron-type host material for unilateral homogeneous phosphorescent organic light-emitting diodes with low efficiency roll-off".JOURNAL OF MATERIALS CHEMISTRY 22.43(2012):23129-23135. |
入库方式： OAI收割
来源：化学研究所
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