摘要
报道用有机材料Ｔｂ（ＡｃＡ）３·ｐｈｅｎ作为发射层的绿色发光二极管。二层结构为玻璃衬底ＩＴＯ／芳香族二胺类衍生物ＴＰＢ／Ｔｂ（ＡｃＡ）３·ｐｈｅｎ／Ａｌ，各功能层均用真空热蒸发法制备。在正向直流偏压驱动下获得Ｔｂ３＋的特征发光，同时还发现一个峰位４３０ｎｍ的蓝光发射，它来源于空穴输运层ＴＰＢ。在室温条件下器件的阈值电压力４Ｖ，当驱动电压提高到１６Ｖ时，器件的最高发光亮度达到２００ｃｄ／ｍ２。通过对器件光谱及电学特性的测量、比较与分析，探讨了有关稀土有机电致发光的发光机理等问题。
Organic eiectroluminescent(EL) device with a new trivalent terbium(Tb) complex as an emitter was fabricated. The material has high efficient photoluminescence(P L ). Its molecular formulas is Tb(AcA)3· phen(AcA: acetylacetone; phen: o-phenanthroline). The cell structure was glass substrate/In-SnO(ITO)/hole transport diamine/Tb(AcA)3· phen/Al which were fabricated by means of vacuum deposition. It exhibits bright EL with sharp emission lines of Tb3+ upon applying dc voltage. The brightness of the OEL cell with Tb(AcA)3· phen as emitter is about 200 cd/m2 much higher than that reported in Ref. [3 ]
出处
《中国稀土学报》
CAS
CSCD
北大核心
1996年第3期220-223,共4页
Journal of the Chinese Society of Rare Earths
基金
国家自然科学基金
