The use envelope law calculates of optical constant and the characteristic research of ZnS1-xOx Thin Films

• Main Authors: K. L. Peng, 彭康龍
• Other Authors: 洪魏寬
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/gj4exn

碩士 === 國立臺北科技大學 === 光電工程系研究所 === 97 === The major purpose of this research is to write a computer program to calculate the optical constants , and the computer program can enable coating engineers to analysis the result of the coating quickly. Here I adopt the program language of OringinPro to develop the computer program of coating . The main way of this research is using the monitoring curve as a database , and then developed from the curve fitting to computer program . The text not only specifies the method on the basis of cubic spline curve fitting , but also regards the substrate as finite , at the same time consider the effect of two-sided of the substrate in which multiple reflection and transmission take place . This program makes it easy to get the precise profile of the refractive index and extinction coefficient of the thin film . In the samples , optical properties of epitaxial ZnS1-xOx (0 < x < 1) alloy grown on c-plane sapphire substrates by pulsed laser deposition were investigated. A ZnS target was laser ablated in an oxygen atmosphere to form the ZnSO film on the substrate. The absorption coefficients retrieved from optical transmission measurements were used to determine the band gap energies.