A novel rare earth complex Eu0.5La0.5 (TTA)3phen, displaying electroluminescent property, was synthesized,and monolayer and double-layer devices were fabricated by doping it into poly N-vinylcarbazole. The characteristics of these optimized devices were investigated, and the emitting mechanism was explained through the energy band diagram.Optimized double-layer devices with a turn-on voltage of 6.5 V were achieved. At the current density of 68.48 mA· cm- 2,the maximum brightness and the current efficiency of the device reached 238.4 cd·m-2 and 0.35 cd· A-1, respectively.
参考文献
| [1] | Tang C W;VabSlyke S A .Organic electroluminescent diodes[J].Applied Physics Letters,1987,51(12):913. |
| [2] | Tang C W;VanSlyke S A;Chen C H .Electroluminescent of doped organic film[J].Journal of Applied Physics,1989,65:3610. |
| [3] | Yang Chunhe;He Gufeng;Wang Rongqiu et al.The addition of viologen in luminescent polymers for polymer light-emitting diodes[J].Thin Solid Films,2000,363:218. |
| [4] | Cao Y;Parker I D;Yu G et al.Improved quantumefficiency for electroluminescence in semiconducting polymers[J].Nature,1998,397:414. |
| [5] | Kido J;Hayase H;Hongawa K et al.Bright red light emitting organic electroluminescence devices having a europium complex as an emitter[J].Applied Physics Letters,1994,65(17):2124. |
| [6] | Kido J;Ikeda W;Kimura M .White-light-emitting organic electroluminescence device using lanthanide complexes[J].Japanese Journal of Applied Physics,1996,35:394. |
| [7] | Zhao Dongxu;Hong Ziruo;Liang Chunjun et al.Enhanced electroluminescence of europium(Ⅲ) complex by terbium(Ⅲ) substitution in organic light emitting diodes[J].Thin Solid Films,2000,363:208. |
| [8] | Liang C J;Li W L;Hong Z R et al.Energy transfer process from polymer to rare earth complexes[J].Advanced Materials,1999,11:1394. |
| [9] | Liang Chunjun;Li Wenlian;Hong Ziruo et al.Energy transfer process from polymer to rare earth complexes[J].Synthetic Metals,1997,91:151. |
| [10] | 白峰,邓振波,高新,李勇,徐怡庄,吴瑾光.苯甲酰水杨酸铽与PVK混合体系的发光特性[J].中国稀土学报,2002(06):652-655. |
| [11] | 段宁,张希清,高新,刘舒曼,徐叙,陶栋梁,徐怡庄,吴瑾光.一种新型的稀土有机电致发光材料：Tb（asprin）3phen[J].光谱学与光谱分析,2001(03):267-270. |
| [12] | 郭栋,梁春军,林鹏,邓振波,白峰,李勇,徐怡庄,吴瑾光.Eu（BSA）3phen与PVK共混体系的光致和电致发光特性的研究[J].中国稀土学报,2004(06):879-882. |
| [13] | Zhong Guolun;Kim Kyungkon;Jin Jung.Intermolecular energy transfer in photo-and electroluminescence properties of a europium (Ⅲ) complex dispersed in poly(vinylcarbazole)[J].Synthetic Metals,2002(129):193. |
| [14] | Yutaka Ohmori;Hirotake Kajii;Takumi Sawatani;Hiroshi Ueta;Katsumi Yoshino .Enhancement of electroluminescence utilizing confined energy transfer for red light emission[J].Thin Solid Films: An International Journal on the Science and Technology of Thin and Thick Films,2001(1/2):407-411. |
| [15] | Yang Shengyi;Wang Zhenjia;Chen Xiaohong et al.Influence of interface of interface barriers on carriers recombination in organic bilayer devices at high electric field[J].Chinese Physical Society,2000,49(08):1627. |
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%