Highly UV sensitive Sn nanoparticles blended with polyaniline onto micro-interdigitated electrode array for UV-C detection applications

摘要

Highly UV sensitive sub-5nm Sn nanoparticles-Polyaniline (Sn (NPs)-PANI) composite material has been formulated by chemical polymerisation. A thin film of the composite is deposited on Micro-Interdigitated Electrode (mu-IDEs) array for photodetector application. Considerably, higher optical density (10-12), w.r.t carbon of Sn (NPs) in Sn (NPs)-PANI/Al-IDE/Glass structures exhibit the exceedingly enhanced sensitivity towards UV illumination. There is substantial largecontrast ratio of approximate to 2290at -1V, significantly large responsivity approximate to 3.05A/W, detectivity of 2.26E+13 Jones and reasonable rise/fall time of approximate to 0.7/1.7s observed for Sn (NPs)-PANI/Al-IDE/Glass devices. Surface morphology, phase analysis, and elemental composition of Sn-PANI systems have been investigated by X-ray diffraction and Energy Dispersive X-ray analysis (EDX), respectively. Transmission electron microscopy (TEM) analysis confirms the size of the Sn (NPs) and blend with Polyaniline. The significantly enhanced sensitivity of 228514.3 for 254nm establishes the clear potential of the fabricated structure for UV-C detector application.