Problem $4)-18$ pts

Consider the design of a silicon solar cell $($figure given below$),$ in which the emitter is heavily$-$doped $\backslash ($ n $\backslash )-$type and the base is lightly$-$doped p$-$type.

In the table below, design choices are written in the left column. For each letter a$-$i in the table, state whether the design choice increases, decreases, or does not change the quantity described in that column $($QE at short wavelengths, QE at long wavelengths, or $\backslash (\backslash$mathrm$\{$R$\}\_\{\backslash$text $\{$series $\}\}\backslash )).$ Separately, for each letter a$-$i$,$ write out an explanation for your answer, using any relevant equations.

$($note QE $=$ quantum efficiency$)$

$(1$ pt for answer and $1$ pt for explanation for each of a $-$ i above$)$