SUMMARY
The discussion centers on determining the optical band gap of a cobalt ferrite film deposited on a glass substrate using its absorption, transmittance, and diffuse reflectance spectrum. The user initially faced challenges due to the unknown thickness of the film, which is essential for calculating the absorption coefficient (α) needed for a Tauc plot. A solution was provided to plot αd instead of α, allowing the user to proceed with the analysis despite the thickness uncertainty. This method effectively adjusts the scale while maintaining the integrity of the Tauc plot analysis.
PREREQUISITES
- Understanding of optical band gap concepts
- Familiarity with Tauc plots for band gap determination
- Knowledge of absorption, transmittance, and reflectance spectra
- Basic principles of film thickness measurement in materials science
NEXT STEPS
- Research the methodology for constructing Tauc plots using αd
- Explore techniques for estimating film thickness in optical materials
- Learn about the optical properties of cobalt ferrite films
- Investigate advanced spectroscopic methods for band gap analysis
USEFUL FOR
Materials scientists, optical engineers, and researchers involved in the characterization of thin films and their optical properties will benefit from this discussion.