Open Access

ARTICLE

Higher sensitive influence on Cu₂S: Sb and Cu₂S: Al heterojunction for application photodetectors

H. K. Hassun^a,*, B. H. Hussein^a, B. K. H. Al-Maiyaly^a, R. H. Athab^a, Y. K. H. Moussa^b

a Department of Physics, College of Education for Pure Science (Ibn Al-Haitham), University of Baghdad, Baghdad, Iraq
b College of Science, University of Baghdad, Baghdad

* Corresponding Author:

Chalcogenide Letters 2025, 22(6), 541-550. https://doi.org/10.15251/CL.2025.226.541

Received 20 February 2025; Accepted 20 June 2025;

Abstract

Photoconductive possessions through the highly sensitive and responsive in lower applications apply voltages with a charge that effect the product for the photodetector utilizing Copper Sulfide was effective to fabricate and deposit by the means of thermal evaporation techniques following by the heat treatment with applications as the visible photodetector was described. Effects of doping to the antimony and aluminum on photo detectors property were estimated to be below illumination by the utilization of different power densities. The structure with the surface morphology properties was studied by XRD and AFM techniques, a clear effect of dopant on absorption coefficient and energy gap was found in examination of the optical transmit, the device photocurrents property under reverse bias by utilizing several illuminations had been tested, moreover the high responsivity of Cu₂S: Al/Si photo detectors was around the wavelength of 751 nm, quantum efficiency besides the detectivity had been evaluated for every sample, the values of responsivity by the help of doping has risen which is required for good photodetectors application.

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Keywords

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