摘要：本文采用旋涂法制备了可用于远程涂覆的YAG荧光薄膜，用该方法制备的YAG荧光薄膜解决了大功率的白光LED荧光粉与蓝光LED芯片接触过于密集不利于LED的芯片散热从而影响LED的发光效率，工作寿命的缺陷。我们使用石英玻璃片作为衬底，将YAG荧光粉、铋酸盐玻璃粉和有机粘结剂这几种药品充分混合，然后制成荧光浆料涂覆到玻璃衬底上，再经过干燥后放入马弗炉中烧结，最终烧制成具有一定透光性的荧光玻璃片样品。之后我们将测试荧光玻璃片样品的一系列性能，通过控制变量和设置样品的梯度，来探究不同的荧光粉浓度、不同的荧光粉掺杂和不同的玻璃衬底表面粗糙度对所制成的样品光学性能的影响。

关键词：远程涂覆；铋酸盐玻璃；YAG:Ce荧光粉；旋涂法

Preparation and optical characterization of long-range YAG coated fluorescent thin films

Abstract: In this paper, a YAG fluorescent film can be prepared for remote coating by spin coating. The YAG fluorescent film prepared by this method solves the problem that high-power white LED phosphors and blue LED chips are in close contact with LED chips, which is not conducive to heat dissipation of LEDs, thereby affecting LEDs. The luminous efficiency, working life defects. We use a quartz glass plate as a substrate, and fully mix YAG phosphor powder, tellurite glass powder and organic binder, and then prepare a fluorescent slurry coating on a glass substrate, and then put it after drying. It is sintered in a muffle furnace and finally fired into a sample of a fluorescent glass sheet having a certain translucency. After that, we will test a series of properties of fluorescent glass samples, through the control variables and set the gradient of the sample, to explore the different phosphor concentrations, different phosphor doping and different surface roughness of the glass substrate The effect of the optical properties of the sample.

Key word: Remote coating,；bismuth glass,；YAG:Ce phosphor；spin coating

目录

1绪论 1

1.1引言 1

1.2白光LED概述 1

1.2.1照明灯具的发展 1

1.2.2白光LED的发光 2

1.2.3温度对白光LED芯片的影响 3

1.3YAG荧光薄膜 4

1.3.1YAG:Ce荧光粉 4

1.3.2铋酸盐玻璃 5

1.3.3远程涂覆YAG荧光薄膜 5

1.4YAG荧光薄膜制备 5

1.4.1溶胶-凝胶法 5

1.4.2喷涂制备法 6

1.4.3电泳沉积法 6

1.4.4磁控溅射法 7

1.4.5旋涂法 7

1.5论文主要研究内容及意义 8

1.5.1研究内容 8

1.5.2研究意义 8

2实验内容 10

2.1原料与试剂 10

2.2仪器与设备 10

2.3样品制备 11

2.3.1制备玻璃片衬底 11

2.3.2制备玻璃粉 11

2.3.3制备有机浆料 12

2.3.4涂覆荧光薄膜