(H2NC4H8NCH2CH2NH2)(HNCH2CH2NH2)3Zn2Ge2Se8: A new, templated one-dimensional ternary semiconductor stabilized by mixed organic cations

The novel, 1D semiconductor (H2NC4H8NCH2CH2NH2)(HNCH2CH2NH2)3Zn2Ge2Se8 has been synthesized under solvothermal conditions using N-(2-aminoethyl)piperazine as solvent and templating agent at 200 °C. The material was characterized by single crystal and powder X-ray diffraction, IR and Raman spectroscopy and thermogravimetric analysis. The compound consists of 1D anionic [Zn2Ge2Se8]4− chains made of alternating edge-shared [ZnSe4] and [GeSe4] tetrahedra that charged balanced by one N-(2-aminoethyl)piperazinium and three piperazinium cations. The optical properties were investigated with solid state UV–Vis/near IR spectroscopy and the results show that the solid is a medium gap semiconductor with an absorption edge at 1.8 eV.

We present the synthesis and characterization of the first organically templated chalcogenide in the system Zn/Ge/Se. The material is a medium gap semiconductor with an absorption edge at 1.8 eV.Figure optionsDownload as PowerPoint slide