I have performed the DFT calculation for Silicon in Quantum ESPRESO. I have tried to calculate the electronic band structure, the shape of wiggles of bands are mostly matching but the energy values are not matching with the referenced literatures. I have attached the figure of the calculated band structure by me.
It's valance bands are going above the '0' value, which is not correct.
Please, suggest me how I can resolve this energy value issue. It will be helpful in my learning process.
Thanks!
