In DRS we plot a tangent for extraplotting of (@hv)2... what is the reason behind the to draw the tangent? what physicaly its shows?

Nouman Rafiq @Nouman_Rafiq2

01 January 2016 0 6K Report

file is attached for referance.

one thing more why we put 1/2 for direct bandgap and 2 for indirect bandgap

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