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利用光学干涉原理设计和研究光谱选择性涂层是当前太阳能利用研究的一个重要方面,这种涂层基本上都是由一些折射率高低不同的膜层交替叠合而成,只要适当选择不同折射率的材料,控制膜层厚度和层数,就可制成各种性能的采光涂层。本文从评价材料的重要光学常数折射率着手,从化学键参数出发,运用原子量、电负性、以及电荷-半径比等参数来研究材料的折光性。总结了单一元素、离子型卤化物、氧化物和非氧化物等近二百种材料的组成、结构、化学键参数与折射率的关系。探索各类材料的折射率变化规律,预测某些材料的折射率范围。
The use of optical interference principle design and study of spectral selective coating is currently an important aspect of solar energy research, the coating is basically composed of some layers of different refractive index alternately stacked together, as long as the appropriate choice of different refraction The rate of material, control the thickness and number of layers, can be made of various performance lighting coating. In this paper, we start with the evaluation of the refractive index of the important optical constants of the material, and use the parameters of the chemical bond to study the refractive index of the material using the parameters of atomic weight, electronegativity and charge-radius ratio. Summarizes the composition, structure, chemical bond parameters and refractive index of nearly 200 kinds of single element, ionic halide, oxide and non-oxide materials. Explore all kinds of material refractive index changes, predict the refractive index of some materials.