beggars canât be choosers meaning |  beggars canât be choosers definition. The meaning of beggars canât be choosers is: The definition of beggars canât be choosers is: While traveling in Europe, Dai had to stay in a dirty hotel because he had very little money.
From Wikipedia, the free encyclopedia. A wafer, also called a slice or substrate, is a thin slice of semiconductor material, such as a crystalline silicon, used in electronics for the fabrication of integrated circuits and in photovoltaics for conventional, wafer-based solar cells.he size of wafers for photovoltaics is 100â200 mm square and the thickness is 200â300 Î¼m. In the future, 160 Î¼m will be the standard. Electronics use wafer sizes from 100â450 mm diameter. (The largest wafers made have a diameter of 450 mm but are not yet in general use.).
In the early days of the semiconductor industry, wafers were only three inches in diameter. Since then, wafers have been growing in size, as larger wafers result in more chips and higher productivity. The largest wafer diameter used in semiconductor fabrication today is 12 inches, or 300mm.