YAG荧光粉-无铅低软化温度玻璃复合浆料的制备与应用  

Preparation and application of YAG phosphor/lead－free low softening temperature glass composite slurry

作　　者：杜振波 杨乐[1] 吴儒雅 李郎楷[3,4] 范尚青 DU Zhenbo;YANG Le;WU Ruya;LI Langkai;FAN Shangqing(College of Material Science and Engineering,Huaqiao University,Xiamen 361021,Fujian Province,China;Fujian Academy of Building Research,Fuzhou 350025,China;ollege of Materials,Xiamen University,Xiamen 361005,Fujian Province,China;Xiamen Parkathings Amorphous Materials Co.,Ltd,Xiamen 361101,Fujian Province,China)

机构地区：[1]华侨大学材料科学与工程学院,福建厦门361021 [2]福建省建筑科学研究院,福建福州350025 [3]厦门大学材料学院,福建厦门361005 [4]厦门百嘉祥微晶材料科技股份有限公司,福建厦门361101

出　　处：《电子元件与材料》2018年第9期42-47,共6页Electronic Components And Materials

基　　金：华侨大学2016年实验教学改革与建设课题(66661601)

摘　　要：为优化大功率白光LED的封装过程,提出将YAG荧光粉-无铅低软化温度玻璃复合浆料印刷在玻璃基片上,经热处理制备荧光玻璃片的技术方案。采用热膨胀仪、粉末衍射仪、热重分析仪、荧光光谱仪等研究无铅低软化温度玻璃成分与热学性能的关系,无铅低软化温度玻璃粉与YAG荧光粉的配比、固含量、热处理制度等因素对复合浆料及荧光玻璃片晶型、粘度及发光等性能的影响。结果表明,复合浆料固含量为70%时,粘度适用于丝网印刷;印刷后的玻璃基片在550~650℃温度下进行热处理,可制得荧光玻璃片;无铅低软化温度玻璃与YAG荧光粉质量比在1. 2~4. 0范围调整,可得到封装后色温在3500~7000 K的荧光玻璃片。该荧光玻璃片可适用于大功率白光LED的封装。To optimize the packaging process of high-power white LEDs,a technical scheme of printing YAG phosphor/leadfree low-softening temperature glass composite slurry on glass substrates by screen printing and heat treatment to produce fluorescent glass was proposed.The relationship between content and thermo performance of lead-free low softening glass was investigated.In addition,the effects of solid content,ratio of phosphors and low softening temperature glass,heat temperature on crystal form,viscosity,luminescent properties of the slurry and fluorescent were studied by thermal dilatometer,powder XRD,TG and fluorescence spectrometer.The results show that the viscosity of composite slurry is suitable for printing when the solid content is 70%.The glass substrates treated between 550℃and 650℃after printing can produce a fluorescent glass.The mass ratio of glass to YAG phosphor is from 1.2 to 4.0,and the color temperature can be adjusted between 3500 K and 7000 K.The fluorescent glass is suitable for high-power white light LEDs packaging.

关 键 词：浆料 YAG荧光粉 白光LED 低熔点玻璃 丝网印刷 发光玻璃 

分 类 号：TN304[电子电信—物理电子学]