论文部分内容阅读
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。
A green light-emitting diode with an organic material Tb (AcA) 3 · phen as the emissive layer is reported. The two-layer structure is a glass substrate ITO / aromatic diamine derivative TPB / Tb (AcA) 3 · phen / Al, each functional layer is prepared by vacuum thermal evaporation method. The characteristic emission of Tb3 + is obtained under the forward DC voltage bias. At the same time, a blue emission at 430nm is also found, which is derived from the hole transport layer TPB. The threshold voltage of the device is 4V at room temperature. When the driving voltage is increased to 16V, the maximum brightness of the device reaches 200cd / m2. By measuring, comparing and analyzing the spectral and electrical characteristics of the device, the luminescent mechanism of rare earth organic electroluminescence was discussed.