What is tauc plot?

A Tauc plot, also known as a Tauc plot or Tauc plot, is a graph used to analyze the optical properties of semiconducting materials. It is named after the physicist Yung-Sheng Tauc, who first described the method in 1966.

The Tauc plot is used to determine the bandgap of a material by plotting the square of the absorption coefficient (α) versus the photon energy (hν) on a logarithmic scale. The bandgap energy can then be calculated from the intercept of the linear portion of the plot with the energy axis.

The Tauc plot is particularly useful for analyzing the absorption edge of materials with direct bandgaps, such as semiconductors. It can provide valuable information about the electronic structure of a material, including the type of transition responsible for its optical properties.

Overall, the Tauc plot is a powerful tool for studying the optical properties of materials and is commonly used in the fields of solid-state physics, materials science, and semiconductor device technology.