Optical properties of hafnium oxide thin films and their application in energy-efficient windows

被引：193

作者：

Al-Kuhaili, MF ^{[1
]}

机构：

[1] King Fahd Univ Petr & Minerals, Dept Phys, Dhahran 31261, Saudi Arabia

来源：

OPTICAL MATERIALS | 2004年 / 27卷 / 03期

关键词：

D O I：

10.1016/j.optmat.2004.04.014

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Thin films of hafnium oxide were deposited by electron beam evaporation. The films were characterized using X-ray diffraction, X-ray photoelectron spectroscopy and normal incidence transmittance. The films were amorphous, stoichiometric, and transparent down to a wavelength of 300nm. The optical properties of the films, including the refractive index, the absorption index and the bandgap, were deter-mined. The refractive index, in the visible, was relatively high (1.89). The direct bandgap was found to be 5.41 eV. Absorption was insignificant for wavelengths above 250 nm. A heat mirror was built based on the hafnium oxide/silver/hafnium oxide/glass system. This heat mirror was found to be transparent in the visible with an average transmittance of 72.4%, and reflective in the near infrared (wavelength = 700-2000nm) with an average reflectance of 67.0%. Such a heat mirror can be used in applications involving energy-efficient windows. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：383 / 387

页数：5

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