What is the electron concentration in a p-doped semiconductor?

  • Thread starter Thread starter peanutbutter
  • Start date Start date
  • Tags Tags
    Semiconductors
AI Thread Summary
The discussion revolves around calculating electron concentration in a p-doped semiconductor with an intrinsic carrier concentration of 5.6 x 10^14 m^-3 at 300K and an acceptor concentration of Na = 3.9 x 10^18 m^-3. Initially, there is confusion about the necessity of the energy band gap value for the calculation. Participants clarify that a simple equation suffices for determining the electron concentration without needing the band gap. Ultimately, the original poster successfully resolves the question independently. The thread highlights the importance of understanding basic semiconductor equations in doping scenarios.
peanutbutter
Messages
7
Reaction score
0
A semiconductor material has an intrinsic carrier concentration of 5.6 x 10^14 m^-3 at 300K.
What is the electron concentration when such a semiconductor is p doped with an acceptor concentration Na = 3.9 x 10^18 m-3.

I have no idea how to approach this question without a value for the energy band gap. Could someone point me in the right direction? Thanks.
 
Physics news on Phys.org
Why do you need the value of Eg for this question? You only need a simple equation for this question.
 
Defennder said:
Why do you need the value of Eg for this question? You only need a simple equation for this question.

Thanks for the boost in confidence, I've worked it out now anyway.
 

Thread 'Struggling to understand the concept of this question (ice cube in water optics question)'

TL;DR Summary: I came across this question from a Sri Lankan A-level textbook. Question - An ice cube with a length of 10 cm is immersed in water at 0 °C. An observer observes the ice cube from the water, and it seems to be 7.75 cm long. If the refractive index of water is 4/3, find the height of the ice cube immersed in the water. I could not understand how the apparent height of the ice cube in the water depends on the height of the ice cube immersed in the water. Does anyone have an...
View full post »
Thread 'Variable mass system : water sprayed into a moving container'

Thread 'Variable mass system : water sprayed into a moving container'

Starting with the mass considerations #m(t)# is mass of water #M_{c}# mass of container and #M(t)# mass of total system $$M(t) = M_{C} + m(t)$$ $$\Rightarrow \frac{dM(t)}{dt} = \frac{dm(t)}{dt}$$ $$P_i = Mv + u \, dm$$ $$P_f = (M + dm)(v + dv)$$ $$\Delta P = M \, dv + (v - u) \, dm$$ $$F = \frac{dP}{dt} = M \frac{dv}{dt} + (v - u) \frac{dm}{dt}$$ $$F = u \frac{dm}{dt} = \rho A u^2$$ from conservation of momentum , the cannon recoils with the same force which it applies. $$\quad \frac{dm}{dt}...
View full post »

Similar threads

Semiconductor Doping: Impurity Effects on Energy States
Replies
9
Views
2K
Electron and hole concentration
Replies
1
Views
2K
Doped semiconductor material: identify n- p- type
Replies
10
Views
4K
Semiconductor doping - doping concentration is 0?
Replies
5
Views
2K
Intrinsic semiconductor, carrier concentration
Replies
2
Views
1K
Doped semiconductor-to find the resistance?
Replies
2
Views
2K
Diffusion current and carrier concentration equilibrium (unbiased)
Replies
1
Views
1K
I Concentration of Impurities in Extrinsic Semiconductor ?
Replies
3
Views
9K
Determining the maximum number of minority electrons in semiconductor
Replies
3
Views
2K
I have question,The electron and hole concentration in a intrinsic
Replies
2
Views
2K

Hot Threads

Recent Insights

Back
Top