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I-III-VI2 (Copper Chalcopyrite-based) Thin Films for Photoelectrochemical Water-Splitting Tandem-Hybrid Photocathode

Published online by Cambridge University Press:  01 July 2011

Jess M. Kaneshiro ,
Alexander Deangelis ,
Xi Song ,
Nicolas Gaillard  and
Eric L. Miller
Jess M. Kaneshiro
Affiliation:
HNEI, U. of Hawaii at Manoa, 1680 East-West Rd. POST109, Honolulu, HI 96822
Alexander Deangelis
Affiliation:
HNEI, U. of Hawaii at Manoa, 1680 East-West Rd. POST109, Honolulu, HI 96822
Xi Song
Affiliation:
HNEI, U. of Hawaii at Manoa, 1680 East-West Rd. POST109, Honolulu, HI 96822
Nicolas Gaillard
Affiliation:
HNEI, U. of Hawaii at Manoa, 1680 East-West Rd. POST109, Honolulu, HI 96822
Eric L. Miller
Affiliation:
U.S. Department of Energy, EE-2H 1000 Independence Ave. SW, Washington, D.C. 20585
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Abstract

This presentation will investigate various parameters regarding the use of I-III-VI2 Copper Chalcopyrite-based materials for use in tandem-hybrid photocathodes capable of splitting water into hydrogen and oxygen gases in an acidic electrolyte. Constituent parts (fabricated at HNEI) of a proposed monolithically integrated hybrid photovoltaic/photoelectrochemical (PV/PEC) device were characterized separately and combined theoretically using electronic and optical models to simulate tandem operation to first indicate feasibility of matching existing materials. Robust CGSe2 photocathodes were focused on for the PEC cells and CIGSe2 and CISe2 devices were evaluated for the PV cells. Simulation suggested the hybrid PV/PEC system could pass enough light to produce up to 15.87mA/cm2, validating the feasibility and warranting the fabrication of stacked PV/PEC devices.

Keywords

photovoltaicphotochemicalenergy generation
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1324: Symposium D – Compound Semiconductors for Energy Applications and Environmental Sustainability , 2011 , mrss11-1324-d15-08
Copyright
Copyright © Materials Research Society 2011

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References

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