title: Continuous band-gap reduction on ZnO submicrorods via covering with ZnS(1-x)Se(x) or ZnSe(1-x)Te(x) alloy in core/sheath morphology.
abstract: Submicrosized alloy cables of ZnO/w-ZnS(1-x)Se(x) (0 < x < 1) and ZnO/s-ZnSe(1-x)Te(x) (0.8 < or = x < 1) have been prepared. The lattice parameters of the sheath show linear compositional dependence following Vegard's law. The composition-band gap dependence follows the trend of E(g)(ZnO/w-ZnS(1-x)Se(x))(x) = 3.60 - 1.77x + 0.87x(2) (0.22 < or = x < or = 1), E(g)(ZnO/w-ZnS(1-x)Se(x)) = 3.25 eV (0 < or = x < or = 0.22), and E(g)(ZnO/s-ZnSe(1-x)Te(x))(x) = 2.65 - 1.82x + 1.41x(2) (0 < or = x < or = 1), respectively. The continuous band-gap modulations on ZnO-based heterostructures are associated with the core/sheath morphology and the nature of the sheath alloys.
authors.affiliation: State Key Laboratory of Structural Chemistry, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, People's Republic of China.
authors.forename: Yi-Zhi
authors.initials: YZ
authors.lastname: Huang
authors.forename: Li-Ming
authors.initials: LM
authors.lastname: Wu
authors.forename: Shao-Wu
authors.initials: SW
authors.lastname: Du
authors.forename: Ling
authors.initials: L
authors.lastname: Chen