DEPOSITION OF THIN LAYERS OF ZINC SULFIDE FROM THIOUREA COMPLEXES AND THEIR PROPERTIES
Results of investigation of ZnS films prepared by the spray pyrolysis method from thiourea complex compounds [Zn(thio)<sub>2</sub>Cl<sub>2</sub>], [Zn(thio)<sub>2</sub>Br<sub>2</sub>], [Zn(thio)<sub>4</sub>]F<sub>2</sub>, [Zn(thio)<sub>2</sub>(CH<sub>3</sub>COO)<sub>2</sub>], [Zn(thio)<sub>2</sub>(bi-SO<sub>4</sub>)], [Zn(thio)<sub>4</sub>]SO<sub>4</sub>, [Zn(thio)<sub>4</sub>](NO<sub>3</sub>)<sub>2</sub> (thio = N<sub>2</sub>H<sub>4</sub>CS), are presented. It was established that the synthesis temperature and the chemical nature of the complex precursors influence on the crystal structure, optical and electrical properties of the deposited films. The optical band gap of ZnS is 3.34-3.72 eV, electrical conductivity - 10<sup>-4</sup>-10<sup>-10</sup> Sm<sup>1</sup>. Increasing of deposition temperature leads to a shift of the band «self-activated» luminescence of ZnS to the range of longer wavelengths.