intrinsic carrier concentration

[bhuvaneshnick]

In the second step ,in exponential part in denominator we have 0.0258. Here my confusion start we are having this 0.0258 in place of KT(since k is boltz man constant and T is 300K). Even multplying boltzman constant and temperature would not ge that value 0.0258. Help me. Thanks

 

[JimB]

It all depends on which units are used for Boltzmanns constant.

If k has units of eV/K it then has a value of 8.617 x 10^-5
If you multiply this by 300 you get the value of....

JimB

 

[bhuvaneshnick]

yes,Thanks . Its in ev/k.so 8.617*10^-5 multiply by 300 gives 0.0258. One more doubts see the attached image(question is same as to find intrinsic carrier concentraion for silicon at 200k) ,in that what is that (200/300) part ?

 

[bhuvaneshnick]

yes,Thanks . Its in ev/k.so 8.617*10^-5 multiply by 300 gives 0.0258. One more doubts see the attached image(question is same as to find intrinsic carrier concentraion for silicon(in cm^-3) at 200k) ,in that what is that (200/300) part ?