【摘要】 蓝光问题几十年来一直制约着无机EL显示器的全彩色化进程。制备高亮度、高效率、高色纯性和长寿命的蓝光薄膜是无机EL领域的重大研究课题之一。自1999年以来,以BaA l2S4∶Eu为代表的蓝光薄膜材料的研究获得突破性进展,使无机EL不能实现全彩色显示成为历史。回顾了近几年国内外在BaA l2S4∶Eu蓝光薄膜的成分优化、沉积方法、后续退火、防潮处理、氧含量控制、钝化层设计等方面的研究进展,分析了存在的问题及其在无机EL器件中的应用前景。更多还原

【Abstract】 For several decades,the progress of full-color inorganic electroluminescent display technology has been hampered by the low luminance of blue-emitting phosphor.Therefore it has become the subject of intense world-wide research efforts in the field of inorganic electroluminescence to develop blue-emitting phosphors with high luminance,high efficiency,good chromaticity and practical life time.Since its breakthrough discovery in 1999,the rapid improvement of the new generation of blue phosphors represented by europium-doped barium thioaluminate finally re-wrote the history of inorganic EL displays with flying colors.Efforts made in recent years in the improvement of EL performance of europium-doped barium thioaluminate phosphors have been reviewed in this article.These include composition optimization,deposition methods,post-annealing conditions,anti-moisture treatments,oxidation control and passivation layers.The challenges and the prospects of the new blue phosphors in EL display application are also analyzed.更多还原