Computational Studies of the Excitonic and Optical Properties of Armchair SWCNT and SWBNNT for Optoelectronics Applications

In this study, the optical refractive constants of (5, 5) SWBNNT and SWCNT systems were calculated in both parallel perpendicular directions tube axis by using Quantum ESPRESSO YAMBO code. It also extended behaviors to instead reported literature. looked at effects diameter nanotube on properties chiral angles. From our results, best reflection was found for SWBNNT, while refraction with SWCNT. observed that demonstrates directions, shows perfect absorption direction. These new features appeared nanotubes due band gaps, which appear nanotubes’ axis. The electron energy loss (EEL) spectrum revealed prominent ?- ? + ?- Plasmon peaks, themselves reflectivity spectrum. Furthermore, little effect direction axis; as such, combined materials/systems transmitting light offer great potential applications mobile phone touch screens network antennas. addition, studies will help bring ultra-small such next-generation nanotechnology.