摘要 LED（LightEmittingDiode，发光二极管）是一种固体光源，具有寿命长、功耗低、低碳节能、无汞污染、无紫外辐射等特点，是二十一世纪一种新型重要光源。其中“荧光粉转换型”（phosphorconversion，pc）白光LED（pc-LED）受到了高度关注，荧光粉性能的好坏直接影响此类LED的发展。然而，常见蓝光芯片加黄粉（或黄粉加红粉）的白光LED方案存在如下问题：（1）“单一的黄粉”缺少红区发射，复合白光显色性差，色温高；（2）“黄粉加红粉”的方案中，“红粉”存在：（i）常用的“硫化物红粉”不稳定并易产生有害气体；（ii）新型氮化物、氮氧化物红粉的制备，需要高温、高...ABSTRACT LED (light-emitting diode) is a semiconductor light source which presents many characteristics including long lifetime, low energy consumption, without mercury pollution or ultraviolet radiation, and so on. It is an important new light source for the twenty-first century. Among various LEDs, the phosphor conversion white LED (pc-LED) receives a high level of attention; the performance ...学位：工学博士院系专业：材料学院材料科学与工程系_材料学学号：2072009015313
