ArticleScientific reports2025
Fabrication of strontium-doped Bi
Article in Scientific reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
This study explores the synthesis of strontium-doped bismuth sulfide ([Formula: see text]) thin films using the Nebulizer Spray Pyrolysis (NSP) technique, focusing on their photodetector properties. Comprehensive analyses of the structural, morphological, optical, and electrical characteristics were conducted to elucidate the behaviour of the materials. The crystallite size was found to be vary in the range of 19 -23 nm with Sr-doping contents. The optical study shows that the band gap for pure [Formula: see text] is approximately [Formula: see text] and decreases with Sr doping to [Formula: see text]. PL study revealed photo-responsive emission bands at wavelengths of approximately 420 nm (2.95 eV), 454 nm (2.73 eV), 483 nm (2.56 eV), and 524 nm (2.36 eV) after excitation with a 350 nm laser source. Electrical measurements indicated that 2% Sr doping in Bi₂S₃ significantly enhanced the photocurrent, with a responsivity of 6.16 × 10⁻
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