Diamond-like semiconductors have structures that are derived from either the cubic orhexagonal form of diamond. The I2-II-IV-VI4 diamond-like semiconductors (DLSs) are particularly interesting for technological applications in photovoltaic solar cells, spintronics and non-linear optics, specifically second harmonic generation. Two new lithium-containing DLS compounds have been synthesized using high-temperature, solid-state methods. The compounds have been characterized using single crystal X-ray diffraction, optical diffuse reflectance spectroscopy, X-ray powder diffraction, and scanning electron microscopy coupled with energy dispersive spectroscopy. One new Li2-II-IV-S4 compound was found to crystallize in the Pn space group, while another new DLS was found to have two polymorphs, one crystallizing in Pn and the other in Pna21. Both of these structure types are derivatives of the hexagonal diamond structure. These new compounds have band gaps in the visible spectrum, ~2-3 eV.

Novel hexagonally derived diamond-like Li<sub>2</sub>-II-IV-S<sub>4</sub> diamond-like semiconductors

245th National Meeting (2013)

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Novel hexagonally derived diamond-like Li2-II-IV-S4 diamond-like semiconductors

Novel hexagonally derived diamond-like Li₂-II-IV-S₄ diamond-like semiconductors