Abstract
The cadmium(II) complexes of thiourea and N-alkylthioureas (with alkyl group methyl or ethyl) have been used as precursors for the preparation of TOPO-capped CdS nanoparticles. The precursors are air-stable, easy to prepare and inexpensive. These compounds decompose cleanly to give good quality crystalline materials. The nanoparticles obtained showed quantum confinement effects in their optical spectra and close-to-band-edge emission in luminescence experiments. The broad diffraction patterns and the diffuse rings observed in the SAED patterns are typical of nanometric particles. The TEM images showed agglomerates of needle-like plates of particles. The presence of a strong phosphorus peak in the EDAX spectra is indicative of TOPO bound to the surface.
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Moloto, M.J., Revaprasadu, N., O'Brien, P. et al. N-alkylthioureacadmium (II) complexes as novel precursors for the synthesis of CdS nanoparticles. Journal of Materials Science: Materials in Electronics 15, 313–316 (2004). https://doi.org/10.1023/B:JMSE.0000024232.10978.73
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DOI: https://doi.org/10.1023/B:JMSE.0000024232.10978.73