【摘要】 报道了用有机／聚合物薄膜材料制备的双异质结发光二极管。器件结构为：玻璃衬底／ＩＴＯ／ＰＶＫ／Ａｌｑ３／ＰＢＤ／Ａｌｑ３／Ａｌ电极。在这种结构器件中，电子和空穴分别从Ａｌ负电极和ＩＴＯ正电极中注入，并在ＰＢＤ及ＰＶＫ中传输注入到Ａｌｑ３发光层中。器件在正向偏压为４Ｖ时有绿色光输出；在正向偏压为１０Ｖ，最大亮度可达３０００ｃｄ／ｍ２以上。经光谱测试，电致发光峰值波长为５２３ｎｍ。更多还原

【Abstract】 Double-heterjunction light-emitting diodes(LEDs) based on organic/polymeric thin layers have been fabricated.The structure of the device is as follows:glass(substrate)/indium-tin-oxide(ITO)/PVK/Alq 3/PBD/Alq 3/Al in which the electrons and holes are respectively injected from the Al negative electrode and ITO positive electrode and transported through PVK and PBD layers,into Alq 3 electroluminescent layer.Green light can be observed at forward bias voltage of 4 V,whereas maximum brightness up to 3 000 cd/m 2 can be achieved at forward bias voltage of 10 V with EL peak wavelength of 523 nm.更多还原