Autori: Emil Indrea, Danut T Silipaş, R Bãnicã, Terezia Nyari, Ramona-Crina Suciu

Editorial: American Institute of Physics , AIP Conference Proceedings, 142555(127), p.127 - 130, 2012.

Rezumat:

A novel low temperature hydrothermal synthesis of II-III 2 -VI 4 (II = Zn, Cd; III = In; VI = S) mixed ternary chalcogenide semiconductors as visible photocatalysts for solar hydrogen production was performed. In this work, an X-ray diffraction based structural and microstructural study of chalcogenide semiconductors type Cd x Zn 1-x In 2 S 4 (0 ≤ x ≤ 1) is reported. The investigated powder samples were synthesized by a hydrothermal technique, using a Teflon lined closed autoclave with self-generated pressure, at 180 o C for 20 hours. Rietveld method based on pseudo-Voigt profile fitting function was applied to perform a simultaneous refinement of X-ray diffraction patterns concerning both material structure and microstructure. The Rietveld refinement of the X-ray diffraction data has been done using the MATCH, MAUD and PowderCel softwares.

Cuvinte cheie: hydrothermal synthesis , X-ray diffraction , solar hydrogen production , chalcogenide semiconductors ,