Excitonic properties refer to the behavior and characteristics of excitons, which are bound electron-hole pairs that form in semiconductors and insulators when an electron is excited from its valence band to the conduction band. Excitons possess unique optical and electronic properties that make them important for various applications in materials science, photonics, and electronics. The study of excitonic properties involves investigating the formation, dynamics, interactions, and decay processes of excitons in different materials. This includes understanding how excitons affect the optical and electronic properties of materials, such as their absorption and emission spectra, energy transfer mechanisms, and exciton binding energies. Research in excitonic properties also explores the potential applications of excitons in devices such as light-emitting diodes, solar cells, and photodetectors. By manipulating and controlling excitonic properties, researchers aim to improve the efficiency and performance of these devices and develop new technologies for energy harvesting, information processing, and sensing applications.