For my research work i am trying to calculate band gap of zinc oxide theoratically and found this paper (Determination of the Particle Size Distribution of Quantum Nanocrystals from Absorbance Spectr). What i am doing is I am making a small matlab programm which will reporduce the results using the same values from the above paper. I used the values given in the paper to make the program
Values used for calculating Band gap 8.85418782 × 10^-12 permittivity of free space 1.60217657 × 10^-19 charge of an electron 9.11 × 10^-31 free electron mass 1.05457173 × 10^-34 hcut 0.59 effective mass of holes 0.26 effective mass of electrons 8.5 relative permittivity 3.2 zno bandgap c velocity of light
But after running the programm i got these results
Size Absorbtion Onset 1 6.21E-26 1.5 6.21E-26 2 6.21E-26 2.5 6.21E-26 3 6.21E-26 3.5 6.21E-26 4 6.21E-26 4.5 6.21E-26 5 6.21E-26 5.5 6.21E-26 6 6.21E-26 6.5 6.21E-26 7 6.21E-26 7.5 6.21E-26 8 6.21E-26 8.5 6.21E-26 9 6.21E-26 9.5 6.21E-26 10 6.21E-26
The results i got doesnt match with tha paper and I belive that my coding in matlab is correct but i am doubtful about the values i have taken for calculating band gap.
Can you help me with this