以小分子化合物CDBP[4,4'-bis(carbazol-9-yl)-9,9-dimethyl-fluorene]为主体材料,Ir(pppy)3[tris(5-phenyl-10,10-dimethyl-4-aza-tricycloundeca-2,4,6-triene)Iridium(Ⅲ)]为磷光客体材料,采用溶液法和真空蒸镀法相结合的制备工艺,制作了小分子磷光电致发光器件.研究表明,通过器件结构的优化,Ir(pppy)3(重量百分比为2)掺杂的多层绿光电致发光器件效率达22.0 cd/A,最大亮度达到26600 cd/m2,这一结果可与当今基于真空蒸镀的小分子或基于溶液法的高分子磷光电致发光器件性能相媲美.本工作为降低有机电致发光器件的成本,扩展溶液法有机电致发光器件制备工艺中材料的选择范围提供了实验依据.
参考文献
| [1] | Tang C W;Vanslyke S A .Organic electroluminescent diodes[J].Applied Physics Letters,1987,51:913-915. |
| [2] | 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. |
| [3] | Adachi C;Baldo M A;Thompson M E et al.Nearly 100% internal phosphorescence efficiency in an organic lightemitting device[J].Applied Physics,2001,90:5048-5055. |
| [4] | Akira Tsuboyama;Hironobu Iwawaki;Manabu Furugori;Taihei Mukaide;Jun Kamatani;Satoshi Igawa;Takashi Moriyama;Seishi Miura;Takao Takiguchi;Shinjiro Okada .Homoleptic Cyclometalated Iridium Complexes with Highly Efficient Red Phosphorescence and Application to Organic Light-Emitting Diode[J].Journal of the American Chemical Society,2003(42):12971-12979. |
| [5] | Tamayo AB.;Alleyne BD.;Djurovich PI.;Lamansky S.;Tsyba I.;Ho NN.;Bau R.;Thompson ME. .Synthesis and characterization of facial and meridional tris-cyclometalated iridium(III) complexes[J].Journal of the American Chemical Society,2003(24):7377-7387. |
| [6] | Lamansky S;Djurovich P;Murphy D et al.Highly phosphorescent bis-cyclometalated Iridium complexes:synthesis,photophysical characterization,and use in organic light emitting diodes[J].Journal of the American Chemical Society,123:4304-4312. |
| [7] | Chihaya Adachi;Marc A. Baldo;Stephen R. Forrest .High-efficiency organic electrophosphorescent devices with tris(2-phenylpyridine)iridium doped into electron-transporting materials[J].Applied physics letters,2000(6):904-906. |
| [8] | Changyun Jiang;Wei Yang;Junbiao Peng;Steven Xiao;Yong Cao .High-Efficiency, Saturated Red-Phosphorescent Polymer Light-Emitting Diodes Based on Conjugated and Non-Conjugated Polymers Doped with an Ir Complex[J].Advanced Materials,2004(6):537-541. |
| [9] | Adamovich V;Brooks J;Tamayo A et al.High efficiency single dopant white electrophosphorescent light emitting diodes[J].New Journal of Chemistry,2002,26:1171-1178. |
| [10] | Confinement of triplet energy on phosphorescent molecules for highly-efficient organic blue-light-emitting devices[J].Applied Physics Letters,2003(3):569-571. |
| [11] | Chang-Lyoul Lee;Kyung Bok Lee;Jang-Joo Kim .Polymer phosphorescent light-emitting devices doped with tris(2-phenylpyridine) iridium as a triplet emitter[J].Applied physics letters,2000(15):2280-2282. |
| [12] | Xiong Gong;Matthew R. Robinson;Jacek C. Ostrowski;Daniel Moses;Guillermo C. Bazan;Alan J. Heeger .High-Efficiency Polymer-Based Electrophosphorescent Devices[J].Advanced Materials,2002(8):581-585. |
| [13] | Liu H M;He J;Wang P F et al.High-efficiency polymer electrophosphorescet diodes based on an Ir(Ⅲ)-complex[J].Applied Physics Letters,2005,87:221103-221105. |
| [14] | Yokoyama M;Tamamura T;Nakano T;Mikawa H et al.Triplet exciton migration in rigid solution of poly(N-vinylcarbazole)and N-vinylcarbazole-fumaronitrile alternating copolymer[J].Journal of Chemical Physics,1976,65:272-279. |
| [15] | Blue organic electrophosphorescence using exothermic host-guest energy transfer[J].Applied physics letters,2003(15):2422-2424. |
| [16] | Xie H Z;Liu M W;Wang O Y;Zhang X H et al.Reduction of self-quenching effect in organic electrophosphorescent emitting devices vía the use of sterically hindered spaces in phosphorescence molecular[J].Advanced Materials,2001,13:1245-1248. |
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%