| http://www.w3.org/ns/prov#value | - The surface 21 of the body thus formed is then prepared by conventional chemical and mechanical 3,493,811 Patented Feb. 3, 1970 ICC means and zinc or other acceptor impurities such as cadmium or certain transition elements such as manganese is diifused into the prepared surface 21 to form a diffused p-n junction region 23.
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