(a) Define thin films. Obtain the conditions for constructive and des…
Previous year question for Advanced Engineering Physics.
Question
(a) Define thin films. Obtain the conditions for constructive and destructive interference due to reflection of light in thin films.
(b) Find the diffusion coefficients of holes and electrons for germanium at $300\text{ K}$. The carrier mobilities in $\text{cm}^2/\text{Vs}$ at room temperature for electrons and holes are $3600$ and $1700$ respectively. Density of carriers is $2.5\times10^{13}/\text{cm}^2$. Use Boltzmann constant= $1.38\times 10^{-23}\text{ J/K}$
- Year: 2022
- Subject: Advanced Engineering Physics