Chapter 15, Problem 15G.1BE

Interpretation Introduction

Interpretation:

The maximum wavelength of radiation required for the promotion of electron from valance band to conduction band of silicon has to be calculated.

Concept Introduction:

Energy gap can be calculated by following equation.

  $E_g=\frac{hc}{\lambda }$

Where,

    $\begin{array}{l}h=6.626\times {10}^{-34}Js\\ \\ c=3\times {10}^{8}m/s\end{array}$

$E_g=$ Energy gap

$\lambda =$ Wavelength

Unit conversion is given below,

    $1joule=6.24\times {10}^{18}eV$