Abstract
Prevailing the demands of UV optoelectronics gadgets with improved efficiency and low-cost fabrication in this commercial and competitive world, we at this moment report an improved photo response capabilities of V2O5 thin films by incorporating Fe content of (0, 1, 2, 3, 4 and 5 wt%) over the glass substrates using nebulizer assisted spray pyrolysis technique. The X-ray diffraction (XRD) analysis authenticates the existence of an orthorhombic crystal structure with an intense peak along (010) plane. The FESEM reveals the morphology of tubular nano rod-like structures with a porous nature for all the V2O5 samples. The presence of compositional elements in the samples was evident by EDX analysis. UV spectral studies show that the bandgap varies from 2.41 eV to 2.1 eV. The PL spectra exemplify the existence of violet emission at 475 nm. The performance of the UV photodetector was analyzed in terms of parameters like Responsivity, Detectivity and External Quantum Efficiency and is observed to be maximum for 3 % Fe doped V2O5 (R = 46.4 × 10−2AW−1, D∗ = 4.26 × 1010Jones and EQE = 150 %).
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