研究了2-TNATA厚度对蓝与黄二基色分离的堆叠式白色有机发光器件性能的影响.器件结构为:2-TNATA(x nm)/NPB(25 nm)/ADN(30 nm):TBPE(2%):DCJTB(1%)/Alq3(20 nm)/LiF(1 nm)/Al(100nm).根据实验结果,2-TNATA的厚度对载流子的注入、色稳定性、热稳定性影响明显.发光器件的颜色可以通过改变加入的2-TNATA层的厚度来改变.这种器件使用2-TNATA作为空穴注入层显示出了色纯度高的白光发射,CIE色坐标x=0.319 7,y=0.349 6.亮度能够达到12 230 cd/m2.
This paper systematically investigated the effect of the thickness of 2-TNATA on the characteristics of stacked white organic light-emitting devices consisting of separate blue and yellow elements.The device structure was 2-TNATA(x nm)/NPB(25 nm)/AND(30 nm):TBPE(2%):DCJTB (1%)/Alq3 (20 nm)/LiF(1 nm)/Al(100 nm).According to the experimentation result,it was found the effects of thickness of 2-TNATA on carrier injection,color and thermal stability was very significant.The color of the white device can be adjusted by changing the thickness of 2-TNATA inserted.The device using 20 nm 2-TNATA as a hole injection layer showed pure-white light emitting with 1931 CIE chromaticity coordinates x=0.319 7,y=0.349 6,and the luminance of 12 230 cd/m2.
参考文献
| [1] | Guo F W,Ma D G.White organic light-emitting diodes based on tandem structures[J].Appl.Phys.Lett.,2005,87(17):173510(1-3). |
| [2] | Wu Y S,Hwang S W,Chen H H.Efficient white organic light emitting devices with dual emitting layers[J].Thin Solid Films,2005,488 (1-2):265-269. |
| [3] | Cheon K O,Shinara J.Combinatorial fabrication and study of dopedlayer-thickness-dependent color evolution in bright small molecular organic light-emitting devices[J].Appl.Phys.Lett.,2003,83 (10):2073 (1-3). |
| [4] | Cheon K O,Shinara J.Bright white small molecular organic light-emitting devices based on a red-emitting guesthost layer and blue-emitting 4,4'-his(2,2'-diphenylvinyl)-1,1'-biphenyl[J].Appl.Phys.Lett.,2002,81(9):1738(1-3). |
| [5] | Chen W B,Lu L L,Cheng J B.Characterization of two-emitter WOLED with no additional blocking layer[J].Optik,2010,121(1):107-112. |
| [6] | Yook K S,Jeon S O,Joo C W,et al.High efficiency,color stability,and stable efficiency roll off in three color hybrid white organic light emitting diodes[J].Appl.Phys.Lett.,2008,93 (7):073302 (1-3). |
| [7] | Wang Y,Hun Y L,Wu X M,et al.Performance enhancement of white-electrophosphorescent devices incorporating a mixed-transition layer[J].Appl.Phys.Lett.,92(12):123504(1-3). |
| [8] | Gao Z Q,Xia P F,Lo P K,et al.p-doped p-phenylenediamine-substituted fluorenes for organic electroluminescent devices[J].Organic Electronics,2009,10:666-673. |
| [9] | Mi B X,Gao Z Q,Lee C S,et al.Reduction of molecular aggregation and its application to the high-performance blue perylene-doped organic electroluminescent device[J].Appl.Phys.Lett.,1999,75:4055(1-3). |
| [10] | Shi J M,Tang C W.Anthracene derivatives for stable blue-emitting organic electrotuminescence devices[J].Appl.Phys.Lett.,2002,80(17):3201(1-3). |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%