介绍了结构为ITO/2T(20nm)/NPBX(15nm)/DPVBi(15nm)/Alq3:Rubrene(10,x)nm/Alq3(40 nm)/LiF(0.5nm)/Al的掺杂方法制备的白光器件.其中掺杂浓度x分别为1%、2%、3%、4%和5%(质量分数).这种结构充分利用了Rubrene在有机电致发光器件中的良好的掺杂特性,从而使器件发射出性能较好的白光.首先讨论了Rubrene的掺杂浓度对器件性能的影响.当Rubrene掺杂浓度是3%(质量分数)时,色度最好(O.32,0.32)且色坐标稳定.在此基础上,讨论了掺杂层厚度对器件性能的影响.掺杂层的厚度Y分别为10,15,20,25,30nm变化时,制作了5个器件.随着掺杂层厚度的增加,器件发出的蓝光和黄光相对平衡,色度较好.其中掺杂层厚度为20nm时,器件的效率和亮度均最高,分别达到5.10 cd/A和17 130cd/m2.
参考文献
| [1] | D'Andrade B W,Forrest S R.White organic light emitting devices for solid state lighting[J].Adv.Mater.,2004,16(18):1585-1595. |
| [2] | Chuen C H,Tao Y T.Highly bright white organic light emitting diodes based on a single emission layer[J].Appl.Phys.Lett.,2002,81(24):4499-4501. |
| [3] | Tokito S,Lijim T.High efficiency white phosphorescent organic light emitting devices with greenish blue and red emitting layers[J].Appl.Phys.Lett.,2003,83(12):2459-2461. |
| [4] | Kido J,Izum I Y.Fabrication of highly efficient organic electroluminescent devices[J].Appl.Phys.Lett.,1998,73(19):2721-2723. |
| [5] | Jiang W L,Ding G Y,Wang J,et al.An organic light emitting devices of highly efficient white phosphor using an electron exciton blocker[J].Optoelectronics Letters,2008,4(1):0026-0029. |
| [6] | Chen X Q,Wei W Y.Fabrication of a white organic light emitting device with single liq:Rubrence luminescent layer[J].Optoelectronics Lett.,2008,4(2):126-129. |
| [7] | 丁桂英,汪津,王广德,等.基于Rubrene掺杂剂的高亮度白色有机电致发光器件[J].液晶与显示,2008,23(1):1-6. |
| [8] | 丁桂英,姜文龙,汪津,等.基于CzHQZn发光的白光有机电致发光器件[J].光电子·激光,2009,20(6):1-4. |
| [9] | 许慧侠,陈柳青,陈简,等.两种宽谱带蓝光发射材料的制备、表征及光学特性[J].发光学报,2008,29(1):32-36. |
| [10] | 李恒,任天辉,钟庆华,等.新型蓝光材料9,10-二萘蒽衍生物的合成及表征[J].液晶与显示,2008,23(5):540-544. |
| [11] | 牟强,王秀峰,张麦丽.空穴缓冲层2T-NATA厚度对OLED器件性能的影响[J].液晶与显示,2008,23(6):680-683. |
| [12] | 贾勇,邓振波,肖静,等.电子传输层PBD对Alq3:DCJTB电致发光器件的影响[J].发光学报,2008,29(1):23-26. |
| [13] | 韩世良,袁永波,连加荣,等.ITO阳极电阻对有机电致发光器件性能的影响[J].发光学报,2008,29(3):429-432. |
| [14] | 马涛,于军胜,李璐,等.基于PVK:NPB掺杂体系的有机电致发光器件的性能[J].发光学报,2008,29(6):809-814. |
| [15] | 张春玉,陆景彬,秦莉,等.微腔有机电致发光白光器件设计及制作[J].发光学报,2009,30(5):596-600. |
| [16] | 杨少鹏,王利顺,邱晓丽,等.基于PVK的高色纯度高稳定性有机电致红光器件[J].发光学报,2009,30(6):728-733. |
| [17] | Kido J,Hongawa K,Okuyama K,et al.White light-emitting organic electrolumines cent devices using the poly(N-vinylcarbazole)emitter layer doped with three fluorescent dyes[J].Appl.Phys Lett.,1994,64(7):815-817. |
| [18] | 汪津,姜文龙,王静,等.掺杂Rubrene双发光区有机黄光器件的制作[J].液晶与显示,2006,21(6):630-635. |
| [19] | 周雪梅,马於光,吴英,等.15,6,11,12-四苯基并掺杂8-羟基喹啉铝体系的发光特性[J].发光学报,1998,19(2):1762178. |
| [20] | Gao W B,Sun J X,Yang K X,et al.Improved performances of the organic light-emitting devices by doping in the mixed layer[J].Optical and Quantum Electronics,2003,35(13):1149-1155. |
| [21] | Li F,Cheng G,Zhao Y,et al.White Electrophosphorescence Devices based on Rhenium Complexes[J].Appl.Phys.Lett.,2003,83(23):4716-4718. |
| [22] | Li G,Shinar J.Combinatorial fabrication and studies of bright white organiclight-emitting devices based on emission from rubrene-doped 4,4-bis(2,2-diphenylvinyl)-1,1-biphenyl[J].Appl.Phys.Lett.,2003,83(23):4716-4718. |
| [23] | Masch S,Lisp E J,Ekstrom O.Efficient white light-emitting diodes realized with new process able blends of coniugated polymers[J].Appl.Phys.Lett.,1997,71(20):2883-2885. |
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%