CoAl2O4-Fe2O3 p-n Nanocomposite Electrodes for Photoelectrochemical Cells
CoAl{sub 2}O{sub 4}-Fe{sub 2}O{sub 3} p-n nanocomposite electrodes were deposited on Ag-coated stainless-steel substrates and annealed at 800 C. Their photoelectrochemical (PEC) properties were investigated and compared with that of p-type CoAl{sub 2}O{sub 4} films. We found that the nanocomposite electrodes exhibit much improved PEC photoresponse as compared to the reference p-type CoAl{sub 2}O{sub 4} electrodes. We speculate that the enhancement is due to the formation of a three-dimensional junction between p-type CoAl{sub 2}O{sub 4} and n-type Fe{sub 2}O{sub 3} nanoparticles, which improves electron-hole separation, thus reducing charge recombination upon light illumination.
- Research Organization:
- National Renewable Energy Laboratory (NREL), Golden, CO.
- Sponsoring Organization:
- USDOE
- DOE Contract Number:
- AC36-08GO28308
- OSTI ID:
- 974457
- Journal Information:
- Applied Physics Letters, Journal Name: Applied Physics Letters Journal Issue: 2, July 2009 Vol. 95; ISSN APPLAB; ISSN 0003-6951
- Country of Publication:
- United States
- Language:
- English
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