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Nima Alidoust, Dr. Maytal Caspary Toroker, Dr. John A. Keith and Dr. Emily A. Carter Significant Reduction in NiO Band Gap Upon Formation of LixNi1−xO alloys: Applications To Solar Energy Conversion ChemSusChem 7

Version of Record online: 21 NOV 2013 | DOI: 10.1002/cssc.201300595

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Band gap engineering of NiO: NiO is a charge-transfer semiconductor, with potential use in photocatalytic (PC) water-splitting and as a back photo-electrode in tandem dye-sensitized solar cells (DSSC). Its electronic structure needs to be engineered to reduce its band gap (for enhanced light absorption) and optimize the position of its band edges for efficient solar energy conversion in these technologies (see image). Alloying with lithium oxide to form LixNi1−xO achieves both of these goals.

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