Describe three types of recombinations If below given equati

Describe three types of recombinations. If below given equation is also to show the contribution due to the surface recombination then how the new equation look like. Please write the new equation. 1/tau_bulk = 1/tau_Band + 1/tau_Auger + 1/tau_SRH Acceptor concentration in a silicon semiconductor was increased by two fold. How many time auger lifetime changed. Electron and hole moves by diffusion and drift. Write the equations for these two processes. Explain which part in those drift and diffusion equations are due to material properties. For the following questions you need to access PV education and read the material and discuss with the class members. Let see how best you can do the following questions. P-n junction formation (3.4): How does a p-n junction form? What is a depletion region? What is a p-n junction diode? Describe its equation and components.

Solution

1. tbluk = tband + t auger +tsrh

2. na*nd = ni²

^3. vd = u *E

u is independent of other parameters

drift velocity , u is constant