Mn4+激活的氟化物红色荧光粉由于其在蓝光区具有很强的宽带激发和很强的红光窄带发射，从而在蓝光LED芯片上具有广大的应用前景。然而有关此类红色荧光粉的制备仍然面临一个重要的问题亟需解决即：腐蚀性、有毒的HF用量大，易造成环境污染。故本项目提出引入新溶剂体系，以醋酸/甲酸/磷酸替代氢氟酸，解决现有的氟化物系列红色荧光粉制备过程中HF用量过大等问题，开发出性质稳定、制备工艺简单、廉价易得的蓝光LED芯片用Mn4+激活的氟化物高效红色荧光粉。主要研究内容：（1）采用液相法合成Mn4+激活的氟化物红色荧光粉，以醋酸/甲酸/磷酸替代腐蚀性的氢氟酸来调控体系的酸度，制备出高效的红色荧光粉；（2）通过对氟化物红色荧光粉发光性能的研究，揭示氟化物基质结构对Mn4+发光性能的影响关系，并且控制发光中心Mn4+的生成，从而达到调控荧光粉发光效率的目的；（3）氟化物红色荧光粉在暖白光LED上的应用研究。

Fluoride red phosphors doped with Mn4+ exhibit intense absorption band in blue region and intense sharp emission peaks in red region, which can find applications on blue LED chips. However, in order to synthesize high brightness phosphors, an excess of HF with toxicity and corrosivity is often employed during the preparation process. In consideration of safety and environmental protection, it is important to develop a new method to these red phosphors without HF. So we raise to develop fluoride red phosphors doped with Mn4+ for warm W-LEDs via a simple and facile method using acetic acid, methane acid or phosphoric acid to substitute HF. The research content consists of the following three parts: 1）To prepare efficient fluoride red phosphors by using acetic acid, methane acid or phosphoric acid to replace HF; 2）To investigate the dependence of host composition on the luminescent properties of these red phosphors, control Mn4+ content of red phosphors and obtain the red phosphors with high luminous efficiency; 3）To investigate the applications of the red phosphors on warm W-LEDs.