Oxide and Oxynitride Materials for Direct Photoelectrochemical Water Splitting Using Visible Light

Tuesday, November 9, 2010: 1:54 PM
151 F Room (Salt Palace Convention Center)
Peter Khalifah1, Limin Wang2, Alexandra Reinert3, Andrew Malingowski3, Peichuan Shen4 and Alexander Orlov4, (1)Chemistry Department, Stony Brook University / BNL, Stony Brook, NY, (2)Chemistry, Brookhaven National Laboratory, Stony Brook, NY, (3)Chemistry, Stony Brook University / BNL, Stony Brook, NY, (4)Materials Science and Engineering, Stony Brook University / BNL, Stony Brook, NY

The vast majority of materials discovered to be capable of direct photoelectrochemical water splitting can only due so using ultraviolet light due to their large band gaps (> 3 eV), far larger than the thermodynamic potential for this reaction (1.23 v). Our recent progress in designing, discovering and optimizing both oxynitride and pure oxide materials capable of direct water splitting using visible light (2.5 - 3.0 eV) will be discussed.

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