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中文摘要：
将Alq3和DCJTB作为掺杂物与基质PVK按照不同比例混合共溶,旋涂成膜,制备了PVK∶Alq3∶DCJTB为发光层的结构为ITO/PVK∶Alq3∶DCJTB/BCP/Alq3/LiF/Al的器件,其中Alq3和BCP分别用作电子传输层和空穴阻挡层,PVK用作蓝光发光层和空穴传输层。保持PVK和DCJTB的质量比为100∶1不变,改变PVK和Alq3的质量比,当PVK和Alq3的质量比为20∶1时,得到了效果较好的白光。器件在电压为14V时,色坐标达到（0.33,0.36）,在10～14V范围内变化甚微。
英文摘要：
The Alq3 and DCJTB were blended with poly （N-vinylcarbazole） （PVK） in different weight ratios and spin coated into films. Multilayer devices with the light emitting layer PVK ： Alq3 ： DCJTB were fabricated, and their structure was ITO/PVK ： Alq3 ： I）CJTB/BCP/Alq3/LiF/Al in which BCP and Alq3 were employed as the hole-blocking and electron-transporting layers respectively, PVK is the blue light-emitting as well as hole-transporting layer. The mass proportion of PVK relative to Alq3 was tuned while the quality ratio of PVK to DCJTB remained （100 ： 1）. Finally, fairly pure and stabile white emission was achieved when PVK ： Alq3 ： DCJTB was 100 ： 5 ： 1. The CIE coordinate was （0. 33, 0. 36） at 14 V, which is very stable at various biases （10-14 V）.
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