The process consists of introducing into the silicon-containing layer at the same time as silicon deposition, another element of column IVa of the periodic classification in a proportion equal to or below 5% of the number of silicon atoms and greater than 0.1%. According to a preferred variant, this...http://www.google.com.au/patents/US4344984?utm_source=gb-gplus-sharePatent US4344984 - Process for producing a layer containing silicon