Effective mass of Si in semiconductor physics

[wiwa_ze]

Hello,

I have the problem, from Sze' book, tunneling current, what is m*?
I want to konw the value of it.
The m* has many reference, how do I select?

My interested device is diode that was doped with Boron and Phosphorus for p-n junction.

Thank very much.

 

[zhanghe]

when you calculate the transport, use the transport effetive mass, when you deal with electron density, use the density effetive mass.
dont care about the effictive mass concept, just imagine the electron with this mass could be dealt with using Newton's law, (and of course it should be quantumm's law if using its real mass)