Preparation of NaGdS_2 via thermolysis of Gd[S2CN(C_4H_8)]_3-phen complexes and sodium diethyldithiocarbamate mixtures

摘要

A novel, simple thermolysis method is adopted to prepare alkali metal rare earth ternary sulphide NaGdS_2 using Gd(S_2CNEt_2)_3-phen complexes and NaS_2CNEt_2·3H_2O mixtures as precursors in a nitrogen atmosphere at 600-1000 C. The obtained NaGdS_2 presents a microrod morphology with an average diameter of 112 nm, average length of 236 nm, and length diameter ratio of 2.1. Furthermore, the as-prepared NaGdS_2 has excellent transmission over a very wide range of wavelengths (>430 nm) and may be an ideal IR window material.