AP0996 Impact of Doping with MWCNT on Electrical Properties of Bi2O3 Thin Film Photodetectors

Abstract

The pulsed laser deposition technique has been used to prepare thin films of pure Bi₂O₃ and doped with multi-wall carbon nanotube (MWCNT) with weight ratios of 0.5, 1, and 2 wt% on glass substrates. Photodetectors were fabricated from these structures and the electrical characteristics were studied under dark and light using 632nm laser. Also, photoconductivity was studied using a tunable monochromatic light source in the wavelength range of 200–800nm. The performance of the fabricated photodetectors was evaluated throughout the spectral responsivity, quantum efficiency, noise equivalent power, and specific detectivity. It was concluded that adding MWCNT to the Bi₂O₃ films led to improving the properties of the photodetector.