Synthesis of Alq₃ by a facile co-precipitation approach and study the impact of CNTs support on its microstructure and electronic characteristics for photodiode development

Abstract The global demand for renewable energy as an alternative to traditional fossil fuels has motivated the scientific community develop highly efficient nanocomposite materials that can be used enhancement optoelectronic technology. In present work, organometallics Alq 3 and /CNTs were prepared by cost-effective chemical route. X-ray diffraction (XRD) scanning electron microscopy (SEM) performed identify structural morphological features. hybrid exhibited polycrystalline structure with a large surface area. optical band gap ( E mathvariant="normal">g stretchy="false">) of film was evaluated within visible spectrum in range 3.047 eV which reduced 2.979 CNTs integration. Ag/Alq /p-Si/Al /CNTs/p-Si/Al photodiodes fabricated using thermal evaporating technique. Current-voltage $({\rm{I}}-{\rm{V}})$?> mathvariant="normal">I − mathvariant="normal">V capacitance/conductance-voltage $({\rm{C}}/{\rm{G}}-{\rm{V}})$?> mathvariant="normal">C / mathvariant="normal">G measured analyze photodiode behavior. main electronic parameters like ${{\rm{R}}}_{{\rm{s}}},\,{\rm{n}},\,{\phi }_{{\rm{b}}}{\,{\rm{and}}\,{\rm{I}}}_{{\rm{o}}}$?> mathvariant="normal">R mathvariant="normal">s , mathvariant="normal">n ϕ mathvariant="normal">b mathvariant="normal">and mathvariant="normal">o determined different models indicating composite high performance ${{\rm{R}}}_{{\rm{s}}}$?> decreased whereas ${{\rm{N}}}_{{\rm{a}}}$?> mathvariant="normal">N mathvariant="normal">a increased doping. Besides, photocurrent sensitivity from $1.45\times {10}^{-8}\,{\rm{A}}\,$?> 1.45 × 10 8 mathvariant="normal">A $1.1\times {10}^{-5}\,{\rm{A}}$?> 1.1 5 due increase free charge carriers.