Prospects for IR emissivity control using electrochromic structures

被引：75

作者：

Hale, JS ^{[1
]}

Woollam, JA ^{[1
]}

机构：

[1] Univ Nebraska, Dept Elect Engn, Ctr Microelect & Opt Mat Res, Lincoln, NE 68588 USA

来源：

THIN SOLID FILMS | 1999年 / 339卷 / 1-2期

基金：

美国国家航空航天局;

关键词：

electrochromic devices; emissivity modulation;

D O I：

10.1016/S0040-6090(98)01335-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Electrochromic devices were investigated as a means of efficiently modulating the IR emissivity of space structures. The optical properties of electrochromic materials are modified upon application of a voltage allowing a high degree of control of the modulation. This degree of control is necessary for some low earth orbit space missions where effects such as rapid changes in the earth's albedo can change the temperature of a satellite. Optical constants of semicrystalline WO3 and NiO in their unintercalated and fully intercalated states were measured by variable angle spectroscopic ellipsometry over a spectral range of 2-14 mu m. Ta2O5 optical constants were measured for use as a hydrogen ion conductor and Au and ITO optical constants were measured for use as electrodes. Calculations were made of the emissivity modulation of an electrochromic device structure for a 300 K blackbody based on the measured optical constants. (C) 1999 Elsevier Science S.A. All rights reserved.

引用

页码：174 / 180

页数：7