Lab Assignment set 1 : MEL ZG631_PMMD
Instructions:
1. All are required to submit the MATLAB file .
2. All are required to copy the graph and paste it under the Matlab file with their “BITS ids”
mentioned on the graph
3. The BITS Id can be entered with the command on command window
gtext('<your BITSID>','color', 'red')
4. The entire assignment can be submitted in pdf format.
5. Bits id mentioned on the graph is unique and can not be edited
6. All are to perform the experiments individually and make individual submition on the portal
7. The weightage of marks is shown against each question
Shown is the sample format
Question 1
Write a computer program to produce a ptot of 𝐸𝐹 − 𝐸𝑖 𝑉𝑠 𝑁𝑎 𝑎𝑛𝑑 𝑁𝐷 similar to Fig. shown below.
Use the program to verify the accaracy of the cited figure. (Yost may find it convenient to employ the
MATLAB logspace function in developing the program.)
[2+2]
Lab Assignment set 1 : MEL ZG631_PMMD
Where
KT= 0.0259eV at T= 300k &
Question 2
The majority carrier mobility versus doping at room temperature is popularly computed from
Where µ is the carrier mobility of either electrons or holes. N is the doping concentration of either
electrons or holes ;and all other quantities as shown in table below.
a.
Develop a log-log plot of µn and µp versus NA or ND for 1014/cm3≤ NA or ND≤ 1019cm-3 using
the equation given and the values in the table. Compare your result with the graph curve
shown
[2]
Lab Assignment set 1 : MEL ZG631_PMMD
Room temperature carrier mobilities µ as a function of the dopant Concn. N
b. Write a MATLAB to develop log-log plots of µn and µp versus T for 150K ≤ T ≤ 600 K for ND
or NA stepped in decade values from 1014 to 1018 cm-3 . Compare your results with the plot
shown
[2+2+
Lab Assignment set 1 : MEL ZG631_PMMD