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Title: Superlattice photoelectrodes for photoelectrochemical cells

Abstract

A superlattice or multiple-quantum-well semiconductor is used as a photoelectrode in a photoelectrochemical process for converting solar energy into useful fuels or chemicals. The quantum minibands of the superlattice or multiple-quantum-well semiconductor effectively capture hot-charge carriers at or near their discrete quantum energies and deliver them to drive a chemical reaction in an electrolyte. The hot-charge carries can be injected into the electrolyte at or near the various discrete multiple energy levels quantum minibands, or they can be equilibrated among themselves to a hot-carrier pool and then injected into the electrolyte at one average energy that is higher than the lowest quantum band gap in the semiconductor.

Inventors:
 [1]
  1. Boulder, CO
Issue Date:
Research Org.:
Midwest Research Institute, Kansas City, MO (United States)
OSTI Identifier:
866102
Patent Number(s):
4634641
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02P - CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10S - TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
DOE Contract Number:  
AC02-83CH10093
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
superlattice; photoelectrodes; photoelectrochemical; cells; multiple-quantum-well; semiconductor; photoelectrode; process; converting; solar; energy; useful; fuels; chemicals; quantum; minibands; effectively; capture; hot-charge; carriers; near; discrete; energies; deliver; drive; chemical; reaction; electrolyte; carries; injected; various; multiple; levels; equilibrated; hot-carrier; pool; average; lowest; band; gap; photoelectrochemical cells; charge carrier; photoelectrochemical cell; average energy; converting solar; charge carriers; energy level; band gap; electrochemical cells; electrochemical cell; solar energy; chemical reaction; chemical process; energy levels; electrochemical process; /429/204/

Citation Formats

Nozik, Arthur J. Superlattice photoelectrodes for photoelectrochemical cells. United States: N. p., 1987. Web.
Nozik, Arthur J. Superlattice photoelectrodes for photoelectrochemical cells. United States.
Nozik, Arthur J. Thu . "Superlattice photoelectrodes for photoelectrochemical cells". United States. https://www.osti.gov/servlets/purl/866102.
@article{osti_866102,
title = {Superlattice photoelectrodes for photoelectrochemical cells},
author = {Nozik, Arthur J},
abstractNote = {A superlattice or multiple-quantum-well semiconductor is used as a photoelectrode in a photoelectrochemical process for converting solar energy into useful fuels or chemicals. The quantum minibands of the superlattice or multiple-quantum-well semiconductor effectively capture hot-charge carriers at or near their discrete quantum energies and deliver them to drive a chemical reaction in an electrolyte. The hot-charge carries can be injected into the electrolyte at or near the various discrete multiple energy levels quantum minibands, or they can be equilibrated among themselves to a hot-carrier pool and then injected into the electrolyte at one average energy that is higher than the lowest quantum band gap in the semiconductor.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1987},
month = {1}
}

Patent:

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