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Title: Photoelectrochemical water splitting using strain-balanced multiple quantum well photovoltaic cells

Abstract

Starting from the classical GaInP/GaAs tandem photoelectrochemical water splitting device, higher solar-to-hydrogen efficiencies can be pursued by extending photon absorption to longer wavelengths. We incorporate strain-balanced GaInAs/GaAsP quantum wells into the bottom GaAs junction, to increase the range of photon absorption. The inclusion of 1.34 eV quantum wells in the depletion region of the bottom cell extends the absorption edge to 930 nm. With a corresponding increase in the thickness of the top cell for current matching, the light-limiting photocurrent increases by >8%. The estimated solar-to-hydrogen efficiency is 13.6 ± 0.5%, and we show a pathway to further improvement. With the semiconductor device remaining on the growth substrate, this quantum well architecture may enable improved stability and durability of the photoelectrochemical electrodes.

Authors:
ORCiD logo [1]; ORCiD logo [1]; ORCiD logo [1];  [1]; ORCiD logo [1];  [2]; ORCiD logo [1]; ORCiD logo [1]
  1. National Renewable Energy Lab. (NREL), Golden, CO (United States)
  2. Univ. of New South Wales, Sydney, NSW (Australia)
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Transportation Office. Fuel Cell Technologies Office
OSTI Identifier:
1559779
Alternate Identifier(s):
OSTI ID: 1557905
Report Number(s):
NREL/JA-5900-73750
Journal ID: ISSN 2398-4902; SEFUA7
Grant/Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Sustainable Energy & Fuels
Additional Journal Information:
Journal Volume: 3; Journal Issue: 10; Journal ID: ISSN 2398-4902
Publisher:
Royal Society of Chemistry
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; photoelectrochemical water splitting; III-V; quantum well; photovoltaic cells

Citation Formats

Steiner, Myles A., Barraugh, Collin, Aldridge, Chase, Barraza, Isabel, Friedman, Daniel J., Ekins-Daukes, Nicholas J., Deutsch, Todd G., and Young, James. Photoelectrochemical water splitting using strain-balanced multiple quantum well photovoltaic cells. United States: N. p., 2019. Web. doi:10.1039/C9SE00276F.
Steiner, Myles A., Barraugh, Collin, Aldridge, Chase, Barraza, Isabel, Friedman, Daniel J., Ekins-Daukes, Nicholas J., Deutsch, Todd G., & Young, James. Photoelectrochemical water splitting using strain-balanced multiple quantum well photovoltaic cells. United States. doi:10.1039/C9SE00276F.
Steiner, Myles A., Barraugh, Collin, Aldridge, Chase, Barraza, Isabel, Friedman, Daniel J., Ekins-Daukes, Nicholas J., Deutsch, Todd G., and Young, James. Wed . "Photoelectrochemical water splitting using strain-balanced multiple quantum well photovoltaic cells". United States. doi:10.1039/C9SE00276F. https://www.osti.gov/servlets/purl/1559779.
@article{osti_1559779,
title = {Photoelectrochemical water splitting using strain-balanced multiple quantum well photovoltaic cells},
author = {Steiner, Myles A. and Barraugh, Collin and Aldridge, Chase and Barraza, Isabel and Friedman, Daniel J. and Ekins-Daukes, Nicholas J. and Deutsch, Todd G. and Young, James},
abstractNote = {Starting from the classical GaInP/GaAs tandem photoelectrochemical water splitting device, higher solar-to-hydrogen efficiencies can be pursued by extending photon absorption to longer wavelengths. We incorporate strain-balanced GaInAs/GaAsP quantum wells into the bottom GaAs junction, to increase the range of photon absorption. The inclusion of 1.34 eV quantum wells in the depletion region of the bottom cell extends the absorption edge to 930 nm. With a corresponding increase in the thickness of the top cell for current matching, the light-limiting photocurrent increases by >8%. The estimated solar-to-hydrogen efficiency is 13.6 ± 0.5%, and we show a pathway to further improvement. With the semiconductor device remaining on the growth substrate, this quantum well architecture may enable improved stability and durability of the photoelectrochemical electrodes.},
doi = {10.1039/C9SE00276F},
journal = {Sustainable Energy & Fuels},
issn = {2398-4902},
number = 10,
volume = 3,
place = {United States},
year = {2019},
month = {7}
}

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