title: New visible light absorbing materials for solar fuels, Ga(Sbx)N1-x.
abstract: A novel visible-light-absorbing dilute alloy, Ga(Sbx)N1-x is synthesized by metal organic chemical vapor deposition (MOCVD) for solar hydrogen production. Significant bandgap reduction of GaN, from 3.4 eV to 1.8 eV, is observed, with a low (2%) incorporation of antimonide, and the lattice expansion is in agreement with our first-principles calculations. The band edges of Ga(Sbx)N1-x are found to straddle the water redox potentials showing excellent suitability for solar water splitting.
authors.affiliation: Department of Chemical Engineering and Conn Center for Renewable Energy Research, University of Louisville, Louisville, KY, USA.
authors.forename: Swathi
authors.initials: S
authors.lastname: Sunkara
authors.forename: Venkat Kalyan
authors.initials: VK
authors.lastname: Vendra
authors.forename: Jacek Bogdan
authors.initials: JB
authors.lastname: Jasinski
authors.forename: Todd
authors.initials: T
authors.lastname: Deutsch
authors.forename: Antonis N
authors.initials: AN
authors.lastname: Andriotis
authors.forename: Krishna
authors.initials: K
authors.lastname: Rajan
authors.forename: Madhu
authors.initials: M
authors.lastname: Menon
authors.forename: Mahendra
authors.initials: M
authors.lastname: Sunkara
keywords: GaN alloys; density functional theory (DFT); photoelectrochemical water splitting; solar fuels