better work function graph for MOSFET

10_mos.tex

@@ -112,12 +112,12 @@ Nothing new, just integrate over the electric field.
     \includegraphics[width=.95\textwidth]{imgs/contact_potentials_mos.png}
 \end{figure}
 \begin{figure}[H]
-    \caption{Work function differences}
     \label{fig:mos_workfunctiondifferences}
     \centering
-    \includegraphics[width=.5\textwidth]{imgs/work_function_differences}
+    \includegraphics[width=.8\textwidth]{imgs/MOSFET_workfunction.png}
+    \caption{a) Constant $E_0$ convention used in the MOS structure in this course. b) Constant $E_f$ convention used in the MOS structure.}
 \end{figure}
-$\Phi_M$ is the work function we build up to have a constant fermi-level (blue).
+%$\Phi_M$ is the work function we build up to have a constant fermi-level (blue).
 
 \subsection{Bias}
 \begin{figure}[H]