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Suppose a pure Si crystal has …

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Suppose a pure Si crystal has 5×10^28 atoms per unit volume . It is dopped by 1ppm concentration of pentavalent As. Calculate the number of electrons and holes . Given that, ni=1.5×10^16 per unit volume(m^-3).

Posted by Yuvraj Singh 5 years, 11 months ago

CBSE > Class 12 > Physics

2 answers

Neha Choudhary 5 years, 11 months ago

1ppm ki doping mtlb. 10^6 atom me se 1atom me doping ki h 10^6atom are doped by 1. As 1atom is dopped by 10^-6 atom of As 5×10^28atom/m^3 are doped by 5×10^28×10^-6. = 5×10^22atoms are doped by As Now , ni^2=ne×nh

Yuvraj Singh 5 years, 11 months ago

Please someone explain this .

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