Enhanced photodetectivity and responsivity in In₁₀Se₇₀Te₁₅Bi₅ film by time-dependent laser irradiation for photodetector applications.

ABSTRACT: Laser treatment for tuning the thin film properties is regarded as a cost-effective, simple, and environmentally friendly method. The recent work aims at the laser annealing of In₁₀Se₇₀Te₁₅Bi₅ film under a 532 nm DPSS laser at variable time scales. The findings from the structural study show an increased dislocation density with reduced crystallite size with irradiation time. The phases like In₂Se₃ and Bi₂Se₃ contributed towards the other optical parameters. The reduction in bandgap by 0.023 eV upon laser irradiation shows laser-induced modification in the films. It enhanced the photocurrent, thus increasing the responsivity to 2.52 × 10^-3 A W^-1 and photo detectivity to 6.51 × 10

SUBMITTER: Giri S 

PROVIDER: S-EPMC12659727 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature