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Explain term 'depletion layer' across a p-n junction
Rectifying action of p-n diode can be explained on the foundation of electronic structure of the semiconductor. When a pure semiconductor is doped to become n-type, Fermi level shifts up from the middle of the energy gap towards donor level. This is so because position corresponding to 505 probability of occupation moves up because of the relatively high concentration of donor electrons in conduction band. If crystal is p-type, Fermi level shifts down towards the acceptor level. When same crystal is doped to become ntype on one side and p-type on the other side, Fermi level has to be constant throughout the crystal in thermal equilibrium. This results in electron energy levels at the bottom of the conduction band in n-part to be lower than those in the p-part, by an amount equal to contact potential eVo as demonstrated in Fig a. Contact potential at the junction gives rise to energy barrier or depletion layer.
Quantitative elemental analysis: The instrument used for AFS consists of atom reservoir that might be a flame or a furnace etc., a basic source emitting the features absorptio
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Q. Show Applications of coordination compounds? Innumerable applications of coordination compounds in fields as divergent as biology, industry. Agriculture, analytical chemist
What volume of oxygen would be required to burn completely 200 ml of acetylene and what would be the volume of carbon dioxide formed?
Detailed study or project file on fajans rule
principle or radiometric titration
how many mole ratios can be obtained from the following equation? Na2S+Cd(NO3)2-2NaNo3+CdS
Types of Substituents which Produce Directive Effect There are two kinds of substituents which generate directive effect are, (i) Those that direct the incoming group to ort
#how do i know the factor of a compound when getting its equivalent weight?
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