Pancheva G. Technology of cadmium-containing multilayer coatings with photovoltaic properties

Research object: cadmium sulfide coating technology for photovoltaic cells. Research purpose: development of physical and chemical bases of technology of cadmium-containing multi-layer coatings with the definition of process parameters. Research methods: gas and liquid chromatography, photometric and titrimetric methods, X-ray diffraction, optical and scanning electron microscope. Theoretical and practical results: the technology of cadmium-containing multi-layer coatings with photovoltaic properties is developed, which allows to obtain cadmium coatings with photovoltaic characteristics that ensure the formation of solar cells with an efficiency of up to 10% proposed concept technology, the design of the main unit. The effect of temperature and concentration of reactants on the quality of the films and their photoelectric properties. Scientific novelty: set process chemistry deposition of cadmium sulphide in alkaline medium ammonium; It determines the structure of chemically precipitated CdS with the sphalerite structure; rational set temperature and concentration parameters of the process; We studied the morphology of the resulting coatings and its connection with the photovoltaic properties. It was found that by reducing the defects increase the photoelectric characteristics of the heterostructure Ti/CdS.It proved that the photoelectric doping Zn improves performance compared to pure CdS to 3 times, and administration of the compounds Ni - 2 times. Degree of implementation: the effectiveness of the technology confirmed the positive results of pilot tests at the State Scientific-Research and Design Institute of Basic Chemistry, OOO NPP "Himstandart" and NPP "SINTA". Research results incorporated into the learning process of NTU "KhPI".