https://doi.org/10.15407/jopt.2018.53.213
Optoelectron. Semicond. Tech. 53, 213-219 (2018)
K.S. Dremliuzhenko, O.A. Kapush, S.D. Boruk,* D.V. Korbutyak
Properties of highly dispersed cadmium telluride systems obtained by electrospray method
Micro- and nanoscale crystals of semiconductor materials such as cadmium telluride are a promising material for making light-absorbing devices, monitors spread-spectrum color reproduction. They can also be used as biological labels. Chemical methods for the synthesis of such structures are widely known. Using the method of electrospray spraying, micro- and nanosized particles can be obtained not only on the basis of metals (cadmium, tellurium), but also semiconductor compounds (cadmium telluride). This work is devoted to the development of methods for manufacturing low-dimensional semiconductor and metal systems, the establishment of optimal conditions for the synthesis of micro- and nanosized cadmium particles, tellurium, cadmium telluride, and the study of their characteristics, namely the establishment of qualitative, quantitative composition and stability of systems, as well as the choice of stabilizer and dispersion medium. Next system were investigated K: Cd -A: Cd, K: Te -A: Te, K: Te -A: Cd, K: Cd -A: Te, K: CdTe - A: CdTe, (where K - cathode, A - anode) in solutions of thioglycolic acid, ethyl alcohol and toluene. The influence of temperature conditions on the formation and stabilization of the obtained systems was investigated. According to X-ray studies, it was found that with a certain combination of the anode and cathode two polymorphic modifications of cadmium telluride is formed. The distribution of the created systems sizes with various combinations of electrodes and formation of microheterogeneous systems is also shown. By improving the method of electrospray spraying, you can receive a large number of nanosized particles, which makes this method more competitive among other physico-chemical methods of synthesis.
Keywords: cadmium telluride, nanocrystal, stabilizer, electroshock fracture, dispersion medium, absorption spectra, polymorphic modification, microelectric systems.