共查询到17条相似文献,搜索用时 46 毫秒
1.
2.
有机电致发光材料研究进展 总被引:9,自引:0,他引:9
本文综述了有机电致发光材料的研究进展 ,重点介绍了聚合物电致发光材料的研究 ,并对这个领域存在的问题和有机电致发光材料的应用前景作了评述 相似文献
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
以具有生物染色作用的中性红染料为主结构,设计合成了两个新型中性红衍生物2-(N-邻苯二甲酰亚胺)-3-甲基-8-二甲胺吩嗪(NRDl)和N,N'-二(3-甲基-8二甲胺-2-吩嗪)-1,4,5,8-萘二酰亚胺(NRD2).实验制作了结构为ITO/NPB(43 nm)/Alq3:dopant(20 nm)/Alq3(32 nm)/Lif(1 nm)/Al(120 nm)的发光器件,在掺杂质量百分比浓度分别为1.0%、2.3%和4.1%时,NRDl的发光峰值分别为582 nm、588 nm和594 nm,在电压为12 V时,发光亮度达到5552cd·m-2,2858 cd·m-2和1985 cd·m-2.在掺杂质量百分比浓度为1.0%时,NRD2的发光峰值为558 nm,在电压为12 V时,发光亮度达到938 cd·m-2. 相似文献
15.
16.
Kum Hee Lee Young Soo Kwon Sunwoo Kang Ji Hoon Seo Seung Soo Yoon 《Thin solid films》2010,518(18):5091-100
A series of blue fluorescent 9,9-diethyl-2,7-distyryl-9H-fluorene derivatives with various capping moieties such as diphenylamino; diphenylphosphino; triphenylsilyl; phenoxy; phenylmercapto; phenylselenoxy; and triphenymethyl groups were synthesized using the Honor-Emmons reaction. The highest occupied molecular orbital-lowest unoccupied molecular orbital energy levels were characterized with a photoelectron spectrometer and rationalized with quantum mechanical density functional theory calculations. The electroluminescent properties were explored through the fabrication of multilayer devices with a structure of Indium-tin-oxide/N,N′-diphenyl-N,N′-(1-napthyl)-(1,1′-phenyl)-4,4′-diamine/2-methyl-9,10-di(2-naphthyl)anthracene:blue dopants (5-15 wt.%)/4,7-diphenyl-1,10-phenanthroline/lithium quinolate/Al. All devices, except that using NPh2, exhibited a Commission Internationale de I'Eclairage (CIE) y value less than 0.19. The best luminous efficiency of 3.87 cd/A and external quantum efficiency of 2.65% at 20 mA/cm2 were obtained in a device comprising the 4-phenylsulfanyl capped 9,9-diethyl-2,7-distyrylfluorene derivative with CIE coordinates (0.16, 0.18). 相似文献
17.
掺杂材料对蓝光OLED器件性能的影响 总被引:1,自引:0,他引:1
采用ADN作为主体材料, 并且对其使用NPB、BAlq3和TBP等材料进行掺杂,制备了一系列蓝光OLED,研究了掺杂对器件性能的影响.实验结果表明,掺杂NPB的器件由于载流子注入和传输趋向平衡,其光电性能明显优于未掺杂的器件; 掺杂BAlq3的器件则具有最佳的色纯度,CIE坐标为(0.15,0.18); 而掺杂TBP的器件则具有高效的能量传递,其流明效率和电流效率分别达到了1.43 lm/W和3.86 cd/A,发光寿命最长,并具有较窄的发光光谱,其色纯度为(0.18,0.19).这些结果说明掺杂不仅改善了器件的发光亮度和色纯度, 而且提高了器件的发光效率和寿命. 相似文献