p type and n type Materials

n-Type Substance: A pure semiconductor with a valency of three, doped with a fit pentavalent element is called n-type semiconductor.

p-Type Substance: A pure semiconductor with a valency of three doped with a trivalent element is called n-tvpe Semiconductor.

For the accelerated and effective learning of a foreign language, special methods have been developed to improve and acquire skills in all the foundations and structures of the language being studied. The proven express method of learning English consists of detailed subsections, where all the difficulties and nuances of the lexical and grammatical structures of written and oral texts are addressed.