Studying the Effect of Non-Thermal Plasma on the Structure, Optical, and Humidity Sensor Properties of Cr:Se Thin Films
Over the past few years, there has been a significant focus on studying the synthesis and applications of metal nanoparticles. These tiny particles possess distinct properties that set them apart from bulk metals. The liquid for Cr:Se core-shell nanoparticles was made using the plasma jets method a...
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| Format: | Article |
| Language: | English |
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University of Baghdad
2025-06-01
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| Series: | Iraqi Journal of Physics |
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| Online Access: | https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/1340 |
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| author | Taghreed A. Hilmi Ramiz Ahmed Al-Ansari |
| author_facet | Taghreed A. Hilmi Ramiz Ahmed Al-Ansari |
| author_sort | Taghreed A. Hilmi |
| collection | DOAJ |
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Over the past few years, there has been a significant focus on studying the synthesis and applications of metal nanoparticles. These tiny particles possess distinct properties that set them apart from bulk metals. The liquid for Cr:Se core-shell nanoparticles was made using the plasma jets method and turned into thin films that are 158.9 nm thick through chemical spray pyrolysis. The nanothin films were analyzed using X-ray diffraction (XRD), ultraviolet-visible spectroscopy, and transmission electron microscopy (TEM). This study looks at the structure and light properties of core-shell nanoparticles made with a chromium to selenium (Cr:Se) ratio of 6:4. The XRD patterns confirmed the crystalline nature of the nanoparticles for the polycrystalline ratio (6:4). When the best thin film, which is well-crystallized, is exposed to non-thermal plasma (dielectric barrier discharges (DBD)), the XRD shows important changes, suggesting it is becoming more crystalline. Tauc plots show that the direct bandgap energies change in a non-linear way, with a notable increase in energy from 2.77 to 3.88 eV. Transmission electron microscopy analysis highlights improved nanoparticle distribution and uniformity. These findings point out the importance of Cr:Se nanoparticles for advanced optoelectronic and sensing technologies, as well as various technological applications.
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| format | Article |
| id | doaj-art-bfc4e4e8a2534ccdb1066c466cf386ca |
| institution | DOAJ |
| issn | 2070-4003 2664-5548 |
| language | English |
| publishDate | 2025-06-01 |
| publisher | University of Baghdad |
| record_format | Article |
| series | Iraqi Journal of Physics |
| spelling | doaj-art-bfc4e4e8a2534ccdb1066c466cf386ca2025-08-20T02:39:44ZengUniversity of BaghdadIraqi Journal of Physics2070-40032664-55482025-06-0123210.30723/ijp.v23i2.1340Studying the Effect of Non-Thermal Plasma on the Structure, Optical, and Humidity Sensor Properties of Cr:Se Thin FilmsTaghreed A. Hilmi0https://orcid.org/0009-0007-3658-334XRamiz Ahmed Al-Ansari1Department of Physics, College of Science, University of Science for Women, Baghdad, IraqDepartment of Physics, College of Science, University of Science for Women, Baghdad, Iraq Over the past few years, there has been a significant focus on studying the synthesis and applications of metal nanoparticles. These tiny particles possess distinct properties that set them apart from bulk metals. The liquid for Cr:Se core-shell nanoparticles was made using the plasma jets method and turned into thin films that are 158.9 nm thick through chemical spray pyrolysis. The nanothin films were analyzed using X-ray diffraction (XRD), ultraviolet-visible spectroscopy, and transmission electron microscopy (TEM). This study looks at the structure and light properties of core-shell nanoparticles made with a chromium to selenium (Cr:Se) ratio of 6:4. The XRD patterns confirmed the crystalline nature of the nanoparticles for the polycrystalline ratio (6:4). When the best thin film, which is well-crystallized, is exposed to non-thermal plasma (dielectric barrier discharges (DBD)), the XRD shows important changes, suggesting it is becoming more crystalline. Tauc plots show that the direct bandgap energies change in a non-linear way, with a notable increase in energy from 2.77 to 3.88 eV. Transmission electron microscopy analysis highlights improved nanoparticle distribution and uniformity. These findings point out the importance of Cr:Se nanoparticles for advanced optoelectronic and sensing technologies, as well as various technological applications. https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/1340Cr:Se NanoparticlesCore ShellSurface Plasmon ResonanceOptical propertiesHumidity |
| spellingShingle | Taghreed A. Hilmi Ramiz Ahmed Al-Ansari Studying the Effect of Non-Thermal Plasma on the Structure, Optical, and Humidity Sensor Properties of Cr:Se Thin Films Iraqi Journal of Physics Cr:Se Nanoparticles Core Shell Surface Plasmon Resonance Optical properties Humidity |
| title | Studying the Effect of Non-Thermal Plasma on the Structure, Optical, and Humidity Sensor Properties of Cr:Se Thin Films |
| title_full | Studying the Effect of Non-Thermal Plasma on the Structure, Optical, and Humidity Sensor Properties of Cr:Se Thin Films |
| title_fullStr | Studying the Effect of Non-Thermal Plasma on the Structure, Optical, and Humidity Sensor Properties of Cr:Se Thin Films |
| title_full_unstemmed | Studying the Effect of Non-Thermal Plasma on the Structure, Optical, and Humidity Sensor Properties of Cr:Se Thin Films |
| title_short | Studying the Effect of Non-Thermal Plasma on the Structure, Optical, and Humidity Sensor Properties of Cr:Se Thin Films |
| title_sort | studying the effect of non thermal plasma on the structure optical and humidity sensor properties of cr se thin films |
| topic | Cr:Se Nanoparticles Core Shell Surface Plasmon Resonance Optical properties Humidity |
| url | https://ijp.uobaghdad.edu.iq/index.php/physics/article/view/1340 |
| work_keys_str_mv | AT taghreedahilmi studyingtheeffectofnonthermalplasmaonthestructureopticalandhumiditysensorpropertiesofcrsethinfilms AT ramizahmedalansari studyingtheeffectofnonthermalplasmaonthestructureopticalandhumiditysensorpropertiesofcrsethinfilms |