"$ifsolargen" 修訂間的差異

$ifsolargen is a serious command for a simple solar cell simulation. The idea is the program read in solar spectrum through the command [[$ifsolarspectrum]]. If user want to use the idea absorption coefficient, he needs to use <math>\alpha_0</math>. Using <math>\alpha_0</math>, we assume that

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<math>\alpha(E=\hbar\omega) = \alpha_0 \times \sqrt(E-Eg) </math>