Computational modeling of angle dependent raman and photoluminescence spectroscopy for investigating 2D molybdenum disulfide flakes induced by 5CB nematic liquid crystal under 532-nm laser excitation

Optical properties of sulfide-based semiconductors, especially MoS2, have gained interest in photonics. This study explored the physical and theoretical perspectives of bare and 5CB-doped MoS2 flakes deposited on a substrate using mechanical and spin coating techniques. The analysis showed that the addition of 5CB nematic liquid crystal (NLC) enhances the E2 g and A1 g modes' intensity and increases the exciton's intensity in the thin layer of MoS2 by utilizing a 532 nm laser. The compressive strain applied through the 5CB changed the optical characteristics of the 2D MoS2 crystal, providing a promising approach for developing high-performance optical devices. The theoretical model achieved through mathematical modeling provided an acceptable level of accuracy in fitting the experimental data. Overall, the study provides insights into the potential applications of MoS2 and 5CB NLC in photonics and highlights the importance of both experimental and theoretical approaches in understanding the material's properties.