Solution Synthesis and Photoluminescence Studies of Small Crystallites of Cadmium Telluride

Abstract

Small crystallites of CdTe have been produced using a new solution synthetic method. In this technique, Cdl2 and Na2Te are each dissolved separately in methanol before rapid mixing. The product of this reaction is pure, stoichiometric CdTe with interesting electronic and optical properties. Photoluminescence studies of this material show a blue shift due to the quantum confinement, indicating the presence of small crystallites. Transmission electron microscopy confirms the presence of nanocrystals. Reaction temperature and processing conditions can be varied to change the crystallite sizes produced. This synthesis can also produce nanocrystalline HgTe.

Synthesis of Cu$_{2}$ZnSn(S,Se)$_{4}$ Nanoparticles for Application in Low-Cost Solar Cells

“…This technique provides a relatively safe process for the fabrication of nanoparticles. 6,7) To the best of our knowledge, this is the first reported synthesis of CZTSSe nanoparticles by this technique.…”

CdTe Thin Films from Nanoparticle Precursors by Spray Deposition

“…CdTe nanoparticle colloids were prepared by the reaction of Na 2 Te with CdI 2 in methanol by modification of a literature preparation. , Accordingly, 1.033 g of CdI 2 (2.82 mmol) was added to a 500 mL sidearm round-bottom flask fitted with a magnetic stir bar and 0.502 g Na 2 Te (2.89 mmol) added to a 250 mL sidearm round-bottom flask fitted with a magnetic stir bar. Approximately 250 and 30 mL dried, degassed methanol was then added to the CdI 2 and Na 2 Te flasks, respectively.…”