Solid State Synthesis, Crystal Structure and Reflectance Spectra of K2Sn2Se4

Abstract

Abstract: A novel ternary met al selenide bipotassium seleno-stannates(K₂Sn₂Se₄) was synthesized by employing the molten-salt reaction of reactants at 550 ℃ for 7 days. The crystal crystallized in the space group I⁴cm with unit cell parameters a=0.815 24(12) nm, b=0.815 24(12) nm, c=0.671 52(13) nm. K₂Sn₂Se₄ contains one-dimensional covelent chains 1_∞[Sn₂Se₄] 2-anions along c-axis direction and separated by K cations. A reflectance spectroscopy study reveals the nature of semiconductor with an energy gap of 1.7 eV.

Key words: Bipotassium seleno-stannates, K₂Sn₂Se₄, Reactive molten salt method, Crystal structure

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ZHANG Li-Dan, WEI Yong-Ge, FENG Xiu-Ling, GUO Hong-You . Solid State Synthesis, Crystal Structure and Reflectance Spectra of K₂Sn₂Se₄[J]. Chem. J. Chinese Universities, 2005, 26(8): 1395.

References

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Solid State Synthesis, Crystal Structure and Reflectance Spectra of K₂Sn₂Se₄

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