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Image of the macro surface of texture for SC created by the methods of chemical etching of silicon multicrystalline substrate
Source publication
World photovoltaics is one of the most promising sectors
of modern industry, rapidly developing, which in recent years
has experienced one of the large increases in the production
of electricity. Prices for traditional energy sources are constantly
growing, due to the growth of the world population,
intensive growth of consumption of industrial pro...
Contexts in source publication
Context 1
... task of obtaining the desired size and depth of the textures is actually two subtasks (conditions), which must be solved simultaneously within a single technological process. Diameter of the pores may vary in a wide range of values 2…25 µm (Fig. 1), with the depth of a pore limited by the so-called "wear and tear" of the material during etching. With a decrease in the thickness of silicon substrates, the formation of deep pores will have a negative impact on the mechanical properties of a SC substrate, increasing the cost of SC fabrication. To prepare etchants, we used ...
Context 2
... include organic substances. In the experiments we used various organic additions (organic acids, ketones, alcohols), which made it possible to receive macro textures with geometrical dimensions of pores within 5...25 µm. It is possible to consider a porous surface (of half-ellipsoid shape) of a silicon substrate with a diameter of cell 25 µm (Fig. 1) as optimal from the point of view of practical obtaining and application. Among the organic additions, only dimethylformamide (DMFA) performed ...
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