咔唑类衍生物具有良好的空穴传输性能和较高的三重态能级,在有机电致发光器件中一般用来构建空穴传输材料和主体材料.本文通过在联咔唑的3和6位引入具有电子传输能力的氰基,设计合成了一种以双咔唑二聚体为分子骨架的新型双极性有机电致发光主体材料6,6'-双氰基-9,9 '-二苯基-3,3 '-联咔唑(BCzDCN),研究了其发光性能、热稳定性和电化学性质.低温磷光发射光谱测试表明BCzDCN的三重态能级高于传统的天蓝色磷光掺杂材料双(4,6-二氟苯基吡啶-N,C2 ')吡啶甲酰合铱(FIrpic).以BCzDCN为主体材料,FIrpic和双(4-苯并噻吩[3,2-C])吡啶-N,C2)乙酰丙酮合铱(PO-01)分别为蓝色和黄色磷光掺杂材料,制备了蓝色和白色有机磷光发光二极管器件.器件的最大电流效率分别达到34.6 cd/A和59.0 cd/A.并且在1000 cd/m2亮度下的效率滚降仅有4.1％和5.1％.
参考文献
| [1] | 陈金鑫;黄孝文.OLED有机电致发光材料与器件[M].北京:清华大学出版社,2007:1-34. |
| [2] | 李子坤;徐征;赵谡玲 等.照明用白光OLED的现状与挑战[J].现代显示,2010,7(114):17-25. |
| [3] | Kido J;Kimura M;Nagai K .MULTILAYER WHITE LIGHT-EMITTING ORGANIC ELECTROLUMINESCENT DEVICE[J].Science,1995(5202):1332-1334. |
| [4] | 尹冬冬,单璐,沈玉全.有机小分子电致发光研究进展[J].感光科学与光化学,2000(03):235-242. |
| [5] | Tang C W;Vanslyke S A .Organic electroluminescent diodes[J].Applied Physics Letters,1987,51(12):913-915. |
| [6] | Baldo M A;Thompson M E;Forrest S R et al.Highly efficient phosphorescent emission from organic electroluminescent devices[J].NATURE,1998,395:151-154. |
| [7] | M. A. Baldo;S. Lamansky;P. E. Burrows .Very high-efficiency green organic light-emitting devices based on electrophosphorescence[J].Applied physics letters,1999(1):4-6. |
| [8] | White organic light-emitting diodes with fluorescent tube efficiency[J].Nature,2009(TN.7244):234-238. |
| [9] | Kiran T. Kamtekar;Andrew P. Monkman;Martin R. Bryce .Recent Advances in White Organic Light-Emitting Materials and Devices (WOLEDs)[J].Advanced Materials,2010(5):572-582. |
| [10] | Youtian Tao;Chuluo Yang;Jingui Qin .Organic host materials for phosphorescent organic light-emitting diodes[J].Chemical Society Reviews,2011(5):2943-2970. |
| [11] | Atul Chaskar;Hsiao-Fan Chen;Ken-Tsung Wong .Bipolar Host Materials: A Chemical Approach for Highly Efficient Electrophosphorescent Devices[J].Advanced Materials,2011(34):3876-3895. |
| [12] | 郑才俊,何鉴,赵伟明,叶俊,黄达,张晓宏.有机电致发光器件中的新型双极主体材料的合成及应用[J].影像科学与光化学,2010(06):457-464. |
| [13] | Lixin Xiao;Zhijian Chen;Bo Qu;Jiaxiu Luo;Sheng Kong;Qihuang Gong;Junji Kido .Recent Progresses on Materials for Electrophosphorescent Organic Light-Emitting Devices[J].Advanced Materials,2011(8):926-952. |
| [14] | Jeon S O;Yook K S;Lee J Y .Phenylcarbazole-based phosphine oxide host materials for high efficiency in deep blue phosphorescent organic light-emitting diodes[J].Advanced Functional Materials,2009,19(22):3644-3649. |
| [15] | 姜华,刘云圻,武霞,张永安,金林培.分子配合物电致发光材料研究进展[J].感光科学与光化学,2002(02):149-158. |
| [16] | Chou P T;Chi Y .Phosphorescent dyes for organic lightemitting diodes[J].Chemistry - A European Journal,2007,13(02):380-395. |
| [17] | Shi-Jian Su;Eisuke Gonmori;Hisahiro Sasabe;Junji Kido .Highly Efficient Organic Blue-and White-Light-Emitting Devices Having a Carrier- and Exciton-Confining Structure for Reduced Efficiency Roll-Off[J].Advanced Materials,2008(21):4189-4194. |
| [18] | Chil Won Lee;Jun Yeob Lee .Above 30% External Quantum Efficiency in Blue Phosphorescent Organic Light-Emitting Diodes Using Pyrido[2,3-b]indole Derivatives as Host Materials[J].Advanced Materials,2013(38):5450-5454. |
| [19] | Youtian Tao;Qiang Wang;Chuluo Yang;Cheng Zhong;Jingui Qin;Dongge Ma .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(17):2923-2929. |
上一张
下一张
上一张
下一张
计量
- 下载量()
- 访问量()
文章评分
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%