Determining N-Type and P-Type Semiconductor Characteristics

[xw0927]

for the semiconductor which doping both donor and acceptor impurities...
for example,determine the hole and electron density thermal equlibrium densities and the location of fermi level with respect to Ec,for a silicon at 300K that is doped with 3x10^6 boron and 2.9x 10^6 phospohorus...the question i asked is this doping semiconductor is N or P type semiconductor?isn"t we need determine its is N and P type semiconductor first?

 

[caffenta]

No, you find out if it's primarily n or p-type by calculating the electron and hole concentration.

 

[xw0927]

ooo..okay,thanks ya^^...then about finding the location of the fermi level with respect to Ec,after we had determine it is N type semiconnductor,then we use the equation of Ef-Ei=kt ln N(donor) / N(intrinsic)?