Investigation of the combination of ito/Cds/Cdte/Cu/Au solar cells in microassembly for electrical supply of field cables

Abstract

Studies aimed at optimizing the design of micromodules based on ITO/CdS/CdTe/Cu/Au photoelectric converters, which are used in autonomous power plants for field camps, have been carried out. To use photoelectric converters as power sources, they are combined into micromodules and modules. The nature of commutation of single solar cells in the microassembly significantly affects the output characteristics of the micromodule and, consequently, the efficiency of the photoelectric converter as a whole. It is found that the series connection of the ITO/CdS/CdTe/Cu/Au PEC in the micromodule ensures its stability even if the output parameters of one or more single solar cells fail or deteriorate. If the composition of the micromodule includes a solar cell with significantly worse output characteristics, or there are several such elements, then when they are connected in series, the efficiency of the micromodule is several times higher than for a parallel cell. With the series connection of the ITO/CdS/CdTe/Cu/Au PEC in the micromodule composition, experimental samples of the micromodule with an efficiency of 5.3 % are obtained, which is almost 2 times higher than for parallel connection of the same PEC.