PhotoelectrochemicalCell

PhotoelectrochemicalCell - 1. Conduction band less negative...

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Inexpensive materials 18% efficiency max observed Corrosion problems remain Aurora, P. (2010). University of Michigan, Ann Arbor. Photoelectrochemical (PEC) Cell 2H 2 O h ν → 2H 2 + O 2 H2 O2 Water Light
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Photoelectrochemical (PEC) Cell Semiconductor photoanode Metal Cathode ECB EVB 2H+ +2e-  H2 H2O+2h+  2H++ ½ O2 1.23 eV Electrolyte h+ e-
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Unformatted text preview: 1. Conduction band less negative than H2 reduction potential1 2. Valence band more positive than O2 evolution potential1 3. Bandgap energy ~ 2 eV1 4. Stable in aqueous conditions1 1Alexander et al . (2008). J. Mater. Chem., 18, 2298 2303 Illustration: Aurora, P. (2010). University of Michigan...
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PhotoelectrochemicalCell - 1. Conduction band less negative...

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