Determination of optical constants of functional layer of online Low-E glass based on the Drude theory

Online low emissivity glass (Low-E glass) is a promising glass product. Determination of the optical constants of the functional layer of online Low-E glass is of practical interest for many applications. In this paper, the optical property mechanism of online Low-E glass was analyzed. The expressio...

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Bibliographic Details
Published in:Thin solid films 2008-03, Vol.516 (10), p.3179-3183
Main Authors: Huang, Shuiping, Wang, Zhanshan, Xu, Jian, Lu, Daxue, Yuan, Tongsuo
Format: Article
Language:English
Subjects:
Amorphous semiconductors
glasses
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Drude theory
Exact sciences and technology
Online Low-E glass
Optical constants
Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation
Optical properties of specific thin films
Physics
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Summary:Online low emissivity glass (Low-E glass) is a promising glass product. Determination of the optical constants of the functional layer of online Low-E glass is of practical interest for many applications. In this paper, the optical property mechanism of online Low-E glass was analyzed. The expression for the relationship between transmittance and optical constants was derived on the basis of the Drude theory and the basic methods for thin film optics. Finally, the optical constants of the functional layer of online Low-E glass were obtained by fitting the measured transmission spectrum using the theoretical formula. In addition, the free-carrier concentration of the functional layer was calculated based on Burstein–Moss theory. The calculated results are consistent with the experimental results.
ISSN:0040-6090
1879-2731
DOI:10.1016/j.tsf.2007.08.137