采用有机发光二极管(OLEDs)的有机半导体照明(有机照明)是绿色环保、健康安全的新型面光源,有望在固态照明领域得到广泛的应用.有机照明的发展是随着有机发光材料的不断进步而进步的.有机发光材料从最初的荧光材料发展到磷光材料以及最近提出的热活化延迟荧光材料,其性能在不断地提升.基于这些材料的白光OLEDs的性能也在不断提升.最早的白光器件基于荧光小分子材料,但是由于只能利用单线态激子发光,效率很低.随后磷光材料的引入使得白光器件的效率大幅度提升,但是由于蓝色磷光材料本身的稳定性问题,全磷光白光器件的寿命较短.为了结合荧光和磷光的优点,人们提出了荧光/磷光杂化的白光器件,这是目前最有前景的一类白光器件结构.目前针对有机照明的研究,已从早期只关注效率突破阶段,进入到综合提高效率和寿命阶段.从荧光白光、磷光白光以及荧光/磷光混合白光3个方面对有机照明的研究状况、发展趋势进行了介绍.
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