source: http://www.ioffe.ru/SVA/NSM/Semicond/GaInAs/bandstr.html

c1 = 1 / c0
c2 = sqrt((2.1e17) * (7.7e18))*(e^(-(1e-3) / (2*(8.62e-5)*(c0))))



c1 = 1 / c0
c3 = (12000)*((300 / c0)^(-2 / 3))
c4 = (1.602*10^-19) * c3 * c2




c3 = ((1e15) * (e^(-(35e-3) / (2 * (8.62e-5) * (c0)))))
c4 = c3 + c2
c6 = (1.602*10^-19) * c4 * c5