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Title: Electrochromic window with high reflectivity modulation

Abstract

A multi-layered, active, thin film, solid-state electrochromic device having a high reflectivity in the near infrared in a colored state, a high reflectivity and transmissivity modulation when switching between colored and bleached states, a low absorptivity in the near infrared, and fast switching times, and methods for its manufacture and switching are provided. In one embodiment, a multi-layered device comprising a first indium tin oxide transparent electronic conductor, a transparent ion blocking layer, a tungsten oxide electrochromic anode, a lithium ion conducting-electrically resistive electrolyte, a complimentary lithium mixed metal oxide electrochromic cathode, a transparent ohmic contact layer, a second indium oxide transparent electronic conductor, and a silicon nitride encapsulant is provided. Through elimination of optional intermediate layers, simplified device designs are provided as alternative embodiments. Typical colored-state reflectivity of the multi-layered device is greater than 50% in the near infrared, bleached-state reflectivity is less than 40% in the visible, bleached-state transmissivity is greater than 60% in the near infrared and greater than 40% in the visible, and spectral absorbance is less than 50% in the range from 0.65-2.5 mum.

Authors:
; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
20076143
DOE Contract Number:  
FG02-95ER14578; FG03-85SF15927
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 25 Jul 2000
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; 36 MATERIALS SCIENCE; WINDOWS; DESIGN; ELECTROCHROMISM; FABRICATION; INDIUM OXIDES; TIN OXIDES; TUNGSTEN OXIDES; LITHIUM COMPOUNDS; SILICON NITRIDES; SPECTRAL RESPONSE; NEAR INFRARED RADIATION; VISIBLE RADIATION

Citation Formats

Goldner, R B, Gerouki, A, Liu, T Y, Goldner, M A, and Haas, T E. Electrochromic window with high reflectivity modulation. United States: N. p., 2000. Web.
Goldner, R B, Gerouki, A, Liu, T Y, Goldner, M A, & Haas, T E. Electrochromic window with high reflectivity modulation. United States.
Goldner, R B, Gerouki, A, Liu, T Y, Goldner, M A, and Haas, T E. 2000. "Electrochromic window with high reflectivity modulation". United States.
@article{osti_20076143,
title = {Electrochromic window with high reflectivity modulation},
author = {Goldner, R B and Gerouki, A and Liu, T Y and Goldner, M A and Haas, T E},
abstractNote = {A multi-layered, active, thin film, solid-state electrochromic device having a high reflectivity in the near infrared in a colored state, a high reflectivity and transmissivity modulation when switching between colored and bleached states, a low absorptivity in the near infrared, and fast switching times, and methods for its manufacture and switching are provided. In one embodiment, a multi-layered device comprising a first indium tin oxide transparent electronic conductor, a transparent ion blocking layer, a tungsten oxide electrochromic anode, a lithium ion conducting-electrically resistive electrolyte, a complimentary lithium mixed metal oxide electrochromic cathode, a transparent ohmic contact layer, a second indium oxide transparent electronic conductor, and a silicon nitride encapsulant is provided. Through elimination of optional intermediate layers, simplified device designs are provided as alternative embodiments. Typical colored-state reflectivity of the multi-layered device is greater than 50% in the near infrared, bleached-state reflectivity is less than 40% in the visible, bleached-state transmissivity is greater than 60% in the near infrared and greater than 40% in the visible, and spectral absorbance is less than 50% in the range from 0.65-2.5 mum.},
doi = {},
url = {https://www.osti.gov/biblio/20076143}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {7}
}