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Title: Photochromic, electrochromic, photoelectrochromic and photovoltaic devices

Abstract

A light activated photoelectrochromic device is formed of a two-component system formed of a photoactive charge carrier generating material and electrochromic material (plus an elecrolyte). Light interacts with a semiconductive material to generate hole-electron charge carriers which cause a redox reaction in the electrochromic material. One device is formed of hydrated nickel oxide as the electrochromic layer and polycrystalline titanium dioxide as the charge generating material. The materials may be formed as discrete layers or mixed together. Because of the direct charge transfer between the layers, a circuit to apply a voltage to drive the electrochromic reaction is not required, although one can be used to enhance the reaction. The hydrated nickel oxide-titanium dioxide materials can also be used to form a photovoltaic device for generating electricity.

Inventors:
 [1];  [2]
  1. (Lafayette, CA)
  2. (Orinda, CA)
Issue Date:
Research Org.:
Lawrence Berkeley National Laboratory (LBNL), Berkeley, CA
OSTI Identifier:
873242
Patent Number(s):
6118572
Assignee:
Regents of University of California (Oakland, CA) LBNL
DOE Contract Number:  
AC03-76SF00098
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
photochromic; electrochromic; photoelectrochromic; photovoltaic; devices; light; activated; device; formed; two-component; photoactive; charge; carrier; generating; material; plus; elecrolyte; interacts; semiconductive; generate; hole-electron; carriers; redox; reaction; hydrated; nickel; oxide; layer; polycrystalline; titanium; dioxide; materials; discrete; layers; mixed; direct; transfer; circuit; apply; voltage; drive; required; enhance; oxide-titanium; form; electricity; semiconductive material; charge carrier; generating electric; oxide materials; redox reaction; charge carriers; photovoltaic devices; conductive material; photovoltaic device; nickel oxide; titanium dioxide; oxide material; electrochromic material; electrochromic device; generating electricity; charge transfer; electrochromic layer; discrete layer; discrete layers; light activated; /359/345/

Citation Formats

Kostecki, Robert, and McLarnon, Frank R. Photochromic, electrochromic, photoelectrochromic and photovoltaic devices. United States: N. p., 2000. Web.
Kostecki, Robert, & McLarnon, Frank R. Photochromic, electrochromic, photoelectrochromic and photovoltaic devices. United States.
Kostecki, Robert, and McLarnon, Frank R. Sat . "Photochromic, electrochromic, photoelectrochromic and photovoltaic devices". United States. https://www.osti.gov/servlets/purl/873242.
@article{osti_873242,
title = {Photochromic, electrochromic, photoelectrochromic and photovoltaic devices},
author = {Kostecki, Robert and McLarnon, Frank R.},
abstractNote = {A light activated photoelectrochromic device is formed of a two-component system formed of a photoactive charge carrier generating material and electrochromic material (plus an elecrolyte). Light interacts with a semiconductive material to generate hole-electron charge carriers which cause a redox reaction in the electrochromic material. One device is formed of hydrated nickel oxide as the electrochromic layer and polycrystalline titanium dioxide as the charge generating material. The materials may be formed as discrete layers or mixed together. Because of the direct charge transfer between the layers, a circuit to apply a voltage to drive the electrochromic reaction is not required, although one can be used to enhance the reaction. The hydrated nickel oxide-titanium dioxide materials can also be used to form a photovoltaic device for generating electricity.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2000},
month = {1}
}

Patent:

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