What is the most accurate way to determine the energy gap of semiconductor materials? Is it better to use UV-Vis or PL measurements?

When preparing hierarchical zinc oxide ananostructure, the energy gap measured by PL was equal to (3.26 eV) While the energy gap value was determined by UV-Vis measurements (3.5 to 3.7 eV)

27 June 2024 7,327 6 View