Carbon nanotube hybrids; Energy dispersive X ray spectroscopy; Functionalizations; II-IV semiconductors; Nitrogen atom; Nitrogen-doped; Room temperature; Gallium nitride; Hybrid materials; Nitrogen; Photoelectrons; Raman spectroscopy; Scanning electron microscopy; Transmission electron microscopy; X ray photoelectron spectroscopy; X ray spectroscopy; Doping (additives)