Photoelectronic Properties of Antimony Selenide Nanowire Synthesized by Hydrothermal Method
Colloids and surfaces A, Physicochemical and engineering aspects(2023)
摘要
With the advantages of stable structure, large optical absorption coefficient, optimal bandgap, and high See-Beck coefficient, antimony selenide (Sb2Se3) has good prospects for applications in solar cells, photodetectors, ther-moelectric devices, etc. In this work, high quality Sb2Se3 nanowires were fabricated by a hydrothermal method and the fabrication of a single nanowire photodetector was reported. From the experimental data, a band gap of Sb2Se3 nanowires was calculated to be 1.04 eV. The Sb2Se3 single nanowire detector has a dark current of 230 pA, a photocurrent of 45 nA, and a photoresponsivity of 196 mA/W under the light irradiation intensity of 14.4 mW/cm2 @ 532 nm. The photoresponse time of PDs is observed to be 90 ms and 100 ms. The results could enable the large-scale synthesis of high-purity Sb2Se3 nanowires with excellent optical properties and their application in functional optoelectronic devices.
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关键词
Antimony Selenide,Nanowire,Hydrothermal Method,Photodetector
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