title: Dimensional reduction of a layered metal chalcogenide into a 1D near-IR direct band gap semiconductor.
abstract: Reducing the dimensionality of inorganic lattices allows for the creation of new materials that have unique optoelectronic properties. We demonstrate that a layered metal chalcogenide lattice, TiS(2), can form a dimensionally reduced crystalline one-dimensional hybrid organic/inorganic TiS(2)(ethylenediamine) framework when synthesized from molecular precursors in solution. This solid has strong absorption above 1.70 eV and pronounced emission in the near-IR regime. The energy dependence of the absorption, the near-IR photoluminescence, and electronic band structure calculations confirm that TiS(2)(ethylenediamine) has a direct band gap.
authors.affiliation: Department of Chemistry and Biochemistry, The Ohio State University, Columbus, Ohio 43210-1340, United States.
authors.forename: Yi-Hsin
authors.initials: YH
authors.lastname: Liu
authors.forename: Spencer H
authors.initials: SH
authors.lastname: Porter
authors.forename: Joshua E
authors.initials: JE
authors.lastname: Goldberger