One-step solution processing of printable Sb2S3 nano-rods for high-performance photoconductors
Achieving large-scale, affordable, and highly dependable production of antimony sulfide is crucial for unlocking its potential in various applications, including photoconductors, solid-state batteries, thermoelectrics, and solar cells. In our study, we introduce a straightforward, economical, and ca...
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IOP Publishing
2024-01-01
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| Series: | Materials Research Express |
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| Online Access: | https://doi.org/10.1088/2053-1591/ad86aa |
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| author | Md Rezaul Hasan Ikramul Hasan Sohel Mulpuri V Rao |
| author_facet | Md Rezaul Hasan Ikramul Hasan Sohel Mulpuri V Rao |
| author_sort | Md Rezaul Hasan |
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| description | Achieving large-scale, affordable, and highly dependable production of antimony sulfide is crucial for unlocking its potential in various applications, including photoconductors, solid-state batteries, thermoelectrics, and solar cells. In our study, we introduce a straightforward, economical, and catalyst-free single-step solution process for fabricating one-dimensional Sb _2 S _3 nanostructures on flexible polyimide substrates, and we explore their use as photoconductors in the ultraviolet (UV) and visible light spectrum. The precursor solution for creating the Sb _2 S _3 films is prepared by dissolving specified quantities of elemental Sb and S in a solution mixture of ethylenediamine and 2-mercaptoethanol. This solution is then spin-coated onto a polyimide substrate and subsequently annealed at 300 °C for several minutes. Utilizing field emission scanning electron microscopy, grazing incidence x-ray diffraction, Raman spectroscopy, and transmission electron microscopy, we demonstrate that the Sb _2 S _3 films possess high crystallinity, uniform morphology, and a composition that is nearly stoichiometric. Additionally, through Tauc plot analysis, we determine that the films exhibit a direct bandgap of approximately 1.67 eV, which is in close agreement with the bandgap predicted by Heyd–Scuseria–Ernzerhof (HSE06) density-functional theory simulations. The metal-semiconductor–metal photoconductors fabricated with these films display a significant photoresponse to both UV and visible light. These devices achieve a UV on/off ratio of up to 160 at a light intensity of 30 mW cm ^−2 , with brief rise and fall times of 44 ms and 28 ms, respectively. |
| format | Article |
| id | doaj-art-89cfb33ecb6344fc8f04f8e54db991d6 |
| institution | OA Journals |
| issn | 2053-1591 |
| language | English |
| publishDate | 2024-01-01 |
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| series | Materials Research Express |
| spelling | doaj-art-89cfb33ecb6344fc8f04f8e54db991d62025-08-20T02:10:39ZengIOP PublishingMaterials Research Express2053-15912024-01-01111010620110.1088/2053-1591/ad86aaOne-step solution processing of printable Sb2S3 nano-rods for high-performance photoconductorsMd Rezaul Hasan0https://orcid.org/0000-0002-3163-9515Ikramul Hasan Sohel1https://orcid.org/0000-0001-6550-0311Mulpuri V Rao2Department of Electrical and Computer Engineering, George Mason University , 4400, University Drive, Fairfax, VA, 22030, United States of AmericaDepartment of Nano Science and Nano Engineering (NSE), Istanbul Technical University , 34469, Maslak, Istanbul, TurkeyDepartment of Electrical and Computer Engineering, George Mason University , 4400, University Drive, Fairfax, VA, 22030, United States of AmericaAchieving large-scale, affordable, and highly dependable production of antimony sulfide is crucial for unlocking its potential in various applications, including photoconductors, solid-state batteries, thermoelectrics, and solar cells. In our study, we introduce a straightforward, economical, and catalyst-free single-step solution process for fabricating one-dimensional Sb _2 S _3 nanostructures on flexible polyimide substrates, and we explore their use as photoconductors in the ultraviolet (UV) and visible light spectrum. The precursor solution for creating the Sb _2 S _3 films is prepared by dissolving specified quantities of elemental Sb and S in a solution mixture of ethylenediamine and 2-mercaptoethanol. This solution is then spin-coated onto a polyimide substrate and subsequently annealed at 300 °C for several minutes. Utilizing field emission scanning electron microscopy, grazing incidence x-ray diffraction, Raman spectroscopy, and transmission electron microscopy, we demonstrate that the Sb _2 S _3 films possess high crystallinity, uniform morphology, and a composition that is nearly stoichiometric. Additionally, through Tauc plot analysis, we determine that the films exhibit a direct bandgap of approximately 1.67 eV, which is in close agreement with the bandgap predicted by Heyd–Scuseria–Ernzerhof (HSE06) density-functional theory simulations. The metal-semiconductor–metal photoconductors fabricated with these films display a significant photoresponse to both UV and visible light. These devices achieve a UV on/off ratio of up to 160 at a light intensity of 30 mW cm ^−2 , with brief rise and fall times of 44 ms and 28 ms, respectively.https://doi.org/10.1088/2053-1591/ad86aaphotoconductorphotodetectorchalcogenidesantimony sulphideexternal quantum efficiencyoptoelectronics |
| spellingShingle | Md Rezaul Hasan Ikramul Hasan Sohel Mulpuri V Rao One-step solution processing of printable Sb2S3 nano-rods for high-performance photoconductors Materials Research Express photoconductor photodetector chalcogenides antimony sulphide external quantum efficiency optoelectronics |
| title | One-step solution processing of printable Sb2S3 nano-rods for high-performance photoconductors |
| title_full | One-step solution processing of printable Sb2S3 nano-rods for high-performance photoconductors |
| title_fullStr | One-step solution processing of printable Sb2S3 nano-rods for high-performance photoconductors |
| title_full_unstemmed | One-step solution processing of printable Sb2S3 nano-rods for high-performance photoconductors |
| title_short | One-step solution processing of printable Sb2S3 nano-rods for high-performance photoconductors |
| title_sort | one step solution processing of printable sb2s3 nano rods for high performance photoconductors |
| topic | photoconductor photodetector chalcogenides antimony sulphide external quantum efficiency optoelectronics |
| url | https://doi.org/10.1088/2053-1591/ad86aa |
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