Two Step Hydrothermal Synthesis of Nanocrystalline CdS
| Author(s) | : | Rekha Garg Solanki, Poolla Rajaram |
| Institution | : | School of Studies in Physics, Jiwaji University, Gwalior (M.P.) India |
| Published In | : | Vol. 4, Issue 7 — July 2017 |
| Page No. | : | 118-122 |
| Domain | : | Engineering |
| Type | : | Research Paper |
| ISSN (Online) | : | 2348-4470 |
| ISSN (Print) | : | 2348-6406 |
Cadmium sulphide nanocrystals of predominantly hexagonal shape have been synthesized using a two-stephydrothermal method. In this method, a wet chemical process and a hydrothermal process were grouped together. In thefirst step, the precursor solutions along with hydrazine hydrate were thoroughly mixed together and preheated at 50 °Cfor 30 minutes. The resulting sol was then transferred to a metal bomb which was maintained at 150°C for six hours toproduce nanocrystalline CdS. X-ray diffraction (XRD) studies confirm that synthesized nanocrystals are highlycrystalline CdS having the wurtzite structure. Transmission electron microscopy (TEM) show fine polygon shapedcrystallites of size around 30-50 nm. Raman results confirm the characteristic phonon vibrational modes of CdS. Roomtemperature Photoluminescence spectra indicate that the optical band gap of the synthesized particles is around 2.53 eV
Rekha Garg Solanki, Poolla Rajaram, “Two Step Hydrothermal Synthesis of Nanocrystalline CdS”, International Journal of Advance Engineering and Research Development (IJAERD), Vol. 4, Issue 7, pp. 118-122, July 2017.
