Optical Materials最新文献

{"title":"Elastic and radiation shielding properties of zinc borotellurite glass systems: The impact of gadolinium oxide","authors":"S.N. Nazrin ,&nbsp;Azuraida Amat ,&nbsp;Shams A.M. Issa ,&nbsp;Hesham M.H. Zakaly ,&nbsp;Saraswathy Shamini Gunasekaran ,&nbsp;Halimah Badioze Zaman ,&nbsp;M.H.M. Zaid ,&nbsp;M.H.M. Tahir ,&nbsp;Ibrahim A. Shaaban ,&nbsp;Ishu Sharma","doi":"10.1016/j.optmat.2024.116252","DOIUrl":"10.1016/j.optmat.2024.116252","url":null,"abstract":"<div><div>Using the formula [(TeO₂)₇₀(B₂O₃)₃₀], this study examines the impact of Gd₂O₃ on the elasticity and radiation shielding characteristics of zinc borotellurite glass. Glass samples containing 1–5% mol% Gd₂O₃ were created by employing the melt quench technique. XRD verified that they are amorphous in nature, and the existence of TeO₃, TeO₄, BO₃, and BO₄ vibrational groups was revealed by infrared spectra. The structural alterations were shown by the range of longitudinal and shear ultrasonic velocities, which were 3908–4076 m/s and 2222–2277 m/s, respectively. The glass's rigidity was improved by the large rise in elastic moduli, such as bulk (45 GPa), longitudinal (80 GPa), shear (25 GPa), and Young's moduli (60 GPa), with a higher Gd₂O₃ content. Higher concentrations of Gd₂O₃ resulted in a rise in the mass attenuation coefficient (μ_ρ), as measured by WinXcom, which enhanced gamma-ray shielding. The half-value layer (HVL) and mean free path (MFP) at 0.662 MeV decreased with increasing Gd₂O₃ in a consistent manner. The maximum density and optimum gamma-ray shielding performance were found in the glass containing 5 mol% Gd₂O₃. These results show Gd₂O₃ for applications needing greater rigidity and better radiation protection by demonstrating how it affects the elastic and radiation-shielding efficiency of the glass network.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116252"},"PeriodicalIF":3.8,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optical properties and energy transfer of Tm3+ single-doped and Tm3+-Tb3+ co-doped transparent glass-ceramics containing NaGd(MoO4)2 single phase","authors":"Juxia Tong,&nbsp;Zhiwei Luo,&nbsp;Xinzhu Liu,&nbsp;Haozhang Liang,&nbsp;Anxian Lu","doi":"10.1016/j.optmat.2024.116257","DOIUrl":"10.1016/j.optmat.2024.116257","url":null,"abstract":"<div><div>Tm³⁺ single-doped and Tm³⁺-Tb³⁺ co-doped SiO₂–B₂O₃–Na₂O–ZnO–MoO₃-Gd₂O₃ glasses were successfully prepared by the melt-quenching process. X-ray diffraction and transmittance measurements were used to determine that the optimal heat treatment regime consisted of crystallization at 620 °C for 5 h and transparent glass-ceramics containing the NaGd(MoO₄)₂ single phase were obtained. The characterization results by SEM confirmed that the size of the crystals precipitated in the glass matrix was on the nanometer level. The effects of different contents of Tm2O3 on the luminescent properties of glass-ceramics in this system were explored. The results showed that the emission peak at 453 nm (¹D₂→³F₄) had the highest intensity when Tm₂O₃ was doped with 0.5 mol% under the wavelength at 359 nm excitation. In addition, with the gradual increase of Tb₂O₃ contents, the luminescence colour of the Tm₂O₃–Tb₂O₃ co-doped glass-ceramics gradually shifted from blue to green. This indicates its potential application in blue-green light display technologies and various other areas. The experimental results of the water resistance stability of the samples show that the co-doped glass-ceramic still has good luminescence stability after being immersed in water, which provides further favourable support for its application.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116257"},"PeriodicalIF":3.8,"publicationDate":"2024-10-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432397","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Near infrared diode-pumped lasing of femtosecond-laser-written Pr:LiLuF4 waveguide","authors":"Davide Baiocco ,&nbsp;Ignacio Lopez-Quintas ,&nbsp;Javier R. Vázquez de Aldana ,&nbsp;Mauro Tonelli ,&nbsp;Alessandro Tredicucci","doi":"10.1016/j.optmat.2024.116237","DOIUrl":"10.1016/j.optmat.2024.116237","url":null,"abstract":"<div><div>In this Letter we report the near infrared operation of a femtosecond-laser-written diode-pumped Pr:LiLuF₄ waveguide laser. By employing a circular depressed-cladding waveguide with propagation losses as low as 0.19<!--> <!-->dB/cm, we demonstrated lasing at 914 nm, with a maximum output power of 140<!--> <!-->mW and a slope efficiency of 24%. Moreover, we demonstrated the possibility of lasing in a waveguide device at 894 nm, 922 nm and 933 nm. To the authors knowledge, this is the first demonstration of a Pr-based waveguide laser operating in this spectral region.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116237"},"PeriodicalIF":3.8,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142441793","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A comprehensive study of radiation shielding parameters of chalcogens-rich quaternary alloys for nuclear waste management","authors":"Kaushal Sarswat ,&nbsp;Shiv Kumar Pal ,&nbsp;Z.Y. Khattari ,&nbsp;A. Dahshan ,&nbsp;Neeraj Mehta","doi":"10.1016/j.optmat.2024.116253","DOIUrl":"10.1016/j.optmat.2024.116253","url":null,"abstract":"<div><div>The current study examines the impact of metal additives on the shielding characteristics of Se₇₆Te₂₀Sn₂M₂ (where M = Ge, In, Sb, and Pb). These glasses are useful as shielding materials against high-energy radiation, such as X-rays and ϒ-rays, because these glasses have better values of shielding parameters compared to other potential candidates in the race for nuclear safety applications. To this end, we have calculated various radiation-related protection parameters using an online application called Phy-X/PSD. Using this program, we have estimated a complete list of radiation shielding parameters. The impact of the fourth element M (M = Ge, In, Sb, and Pb) on these parameters is also discussed.</div><div>The maximum mass attenuation coefficient (MAC) was recorded at a photon energy of 15 keV for the incorporation of lead. Half-value layer (HVL) values peaked at 6 MeV and it attained its maximum value for germanium. The highest and lowest values of the linear attenuation coefficients (LAC) were obtained for Se₇₆Te₂₀Sn₂Pb₂ and Se₇₆Te₂₀Sn₂Ge₂ alloys respectively. Notably, the Se₇₆Te₂₀Sn₂Pb₂ alloy exhibited the highest values of effective atomic number (<em>Z</em>_<em>eff</em>), electron density (<em>N</em>_<em>eff</em>), atomic cross-section (ACS), and electronic cross-section (ECS), indicating superior shielding performance. Conversely, energy absorption buildup factors (EABF) and exposure buildup factors (EBF) were highest for Se₇₆Te₂₀Sn₂Ge₂ alloy. Neutron attenuation was most effective in the Se₇₆Te₂₀Sn₂In₂ and Se₇₆Te₂₀Sn₂Pb₂ compositions. Overall, the incorporation of lead in the parent glass demonstrated superior shielding capability compared to the other compositions studied.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116253"},"PeriodicalIF":3.8,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142437915","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Enhancing dye-sensitized solar cells efficiency through organic dyes-sensitized holmium-doped TiO2/SnO2 nanocomposites blended with P3HT","authors":"Naimat Ullah ,&nbsp;Ahmed Shuja ,&nbsp;Syed Mujtaba Shah ,&nbsp;Rotaba Ansir ,&nbsp;Khalid A. Alrashidi ,&nbsp;Saikh Mohammad ,&nbsp;Mohd Zahid Ansari ,&nbsp;Imran Murtaza","doi":"10.1016/j.optmat.2024.116255","DOIUrl":"10.1016/j.optmat.2024.116255","url":null,"abstract":"<div><div>The pursuit of sustainable energy solutions has spurred innovation in photovoltaic technology, with dye-sensitized solar cells (DSSCs) emerging as promising contenders. This study presents a novel approach leveraging holmium-doped TiO₂/SnO₂ nanocomposites sensitized with organic dyes, Arsenazo-III, carminic acid, and dithizone, blended with poly (3-hexylthiophene) (P3HT). Through meticulous characterization and analysis, key parameters including short-circuit current density (Jsc), open-circuit voltage (Voc), fill factor (FF), and overall percent efficiency (%) were scrutinized to evaluate photovoltaic performance comprehensively. Absorption spectra analysis facilitated the calculation of band gaps, revealing a significant reduction from 3.10 eV in pure Titania (TiO₂) nanoparticles to 2.72 eV upon doping with Holmium and coupling with SnO₂. Notably, Arsenazo-III dye-sensitized holmium-doped TiO₂/SnO₂ nanocomposites exhibited highest power conversion efficiency, achieving a promising efficiency of 2.10 %, which marked a significant improvement over the reference device (0.82 %). This improvement is attributed to the synergistic effects of holmium dopant incorporation and SnO₂ interaction, enhancing light responsiveness. The findings not only validate the efficacy of nanohybrid assemblies but also contribute valuable insights to solar cell technology advancement.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116255"},"PeriodicalIF":3.8,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432385","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Oriented surface arrays on perovskite single-crystal thin films for enhanced polarization sensing","authors":"Li Zhang ,&nbsp;Junyu Li ,&nbsp;Zeren He,&nbsp;Huanyang Chen,&nbsp;Yousheng Zou","doi":"10.1016/j.optmat.2024.116251","DOIUrl":"10.1016/j.optmat.2024.116251","url":null,"abstract":"<div><div>Since polarized light can carry additional information to enhance target and environment identification, detection of polarized light has been widely used in complex environments and conditions. Generally, anisotropic arrayed gratings or structures are required to capture polarized signals, and these additional structures inevitably increase the size of the device and limit its application. Given this, using spontaneously grown anisotropic structures to enhance polarization identification has become an important direction to achieve miniaturized polarization detection. Organic-inorganic halide perovskites have been widely used in optoelectronic devices due to their excellent extinction coefficient and photogenerated carrier transport properties. Meanwhile, due to its simple solution preparation process, micro-region morphology modulation of perovskites can be realized using template-confined growth. In this work, ordered surface channels are constructed on MAPbBr₃ single-crystal thins film by template-confined growth. PDMS templates are utilized to transfer the CD- and DVD-ROM grating pattern and act as the templates to confine the single-crystal growth. By optimizing the imprinting parameters, channel arrays with spacing of 1450 nm and 760 nm are constructed on the surface of single crystals. Further, polarized photodetectors based on MAPbBr₃ single-crystal thin films are constructed with a high on/off ratio of 450 and a specific detectivity of 5 × 10⁹ Jones. The patterned detectors with intervals of 1450 nm and 760 nm exhibit enhanced polarization sensitivities of 1.72 and 1.83, respectively.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116251"},"PeriodicalIF":3.8,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Optimizing the properties of CsPbCl3 perovskites using a solvent-based synthesis approach","authors":"Deenbandhu Sharma,&nbsp;S.K. Sharma","doi":"10.1016/j.optmat.2024.116250","DOIUrl":"10.1016/j.optmat.2024.116250","url":null,"abstract":"<div><div>All-inorganic halide perovskites CsPbX₃ (X = Cl, Br, I) have shown encouraging potential for optoelectronic devices. In this work, the synthesis of CsPbCl₃ perovskites is reported by a simple approach using three different solvents namely dimethylformamide (DMF), dimethyl sulfoxide (DMSO) and a mixture of dimethyl sulfoxide and dimethylformamide. The structural, optical and electrical properties of CsPbCl₃ perovskites are compared to identify the optimal solvent for the synthesis process. The DMSO-based CsPbCl₃ perovskite exhibits an optical bandgap value of 2.96 eV along with high photoluminescence intensity, high charge carrier mobility (29.8 cm²/V-s), and low resistivity (8.06 x 10⁷ Ω-cm) compared to the other two CsPbCl₃ perovskites. These results indicate that DMSO solvent plays an important role in achieving desired optical and electrical properties of CsPbCl₃ perovskites suitable for optoelectronic devices.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116250"},"PeriodicalIF":3.8,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Study of structural, morphological and optical properties of flash evaporated cadmium sulphide thin films","authors":"A. El Hassani ,&nbsp;A. Alsaad ,&nbsp;L. Amiri ,&nbsp;Y. El Hassouani ,&nbsp;S. Dlimi ,&nbsp;A. Narjis ,&nbsp;L. Limouny","doi":"10.1016/j.optmat.2024.116254","DOIUrl":"10.1016/j.optmat.2024.116254","url":null,"abstract":"<div><div>Cadmium sulphide thin films were successfully synthesized by the flash evaporation method under vacuum, then annealed at various temperatures. X-Ray Diffraction patterns showed the formation of the hexagonal wurtzite phase. Structural properties of this most stable phase remain approximately the same at all investigated temperatures. Scanning Electronic Microscopy showed the formation of granular films. The Energy Dispersive X-ray spectra revealed the possible formation of stoichiometric compounds. The obtained UV–Vis spectra revealed that the prepared films exhibit a moderate direct band gap with high transmittance in the visible range. Detailed interpretation of the structural, optical, and optoelectronic findings revealed that annealed CdS thin films hold promising potential for the fabrication of the next generation of the modern optoelectronic devices. Cadmium sulphide thin films were successfully synthesized by the flash evaporation method under vacuum, then annealed at various temperatures. X-Ray Diffraction patterns showed the formation of the hexagonal wurtzite phase for all temperatures with almost the same structural properties. UV–vis spectra revealed that the prepared films exhibit a moderate direct band gap with high transmittance in the visible range, which reinforces the usefulness of these films for photovoltaic and photocatalytique applications. Scanning Electronic Microscopy shows the formation of granular films, while the Energy Dispersive X-ray spectra revealed the possible formation of stoichiometric compounds.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116254"},"PeriodicalIF":3.8,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432396","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Investigations on color quality improvement through laser-induced surface oxidation for coloration","authors":"Yuhang An ,&nbsp;Yaoyao Qi ,&nbsp;ZhanDa Zhu ,&nbsp;Chang Chang ,&nbsp;Lei Xiong ,&nbsp;Xiao Chen ,&nbsp;Guling Zhang ,&nbsp;Wenyan Gao","doi":"10.1016/j.optmat.2024.116249","DOIUrl":"10.1016/j.optmat.2024.116249","url":null,"abstract":"<div><div>This study focuses on laser-induced oxidation of TC4 alloy surfaces and achieves precise color control on TC4 surfaces at room temperature using laser post-processing. The current research lacks an in-depth understanding of the mechanism responsible for color changes due to the number of processing cycles. This study aims to improve the quality of coloration through secondary processing and establish a color control mechanism based on accumulated energy density. Statistical analyses revealed notable reductions in ΔE, ΔC∗, and Δh∗, indicating enhanced color uniformity. Surface morphology and reflectance data further confirmed these findings, demonstrating the effectiveness of secondary processing in achieving consistent and uniform coloration.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116249"},"PeriodicalIF":3.8,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533510","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Flower-like SnS2/rGO composites with efficient iodide-triiodide redox performance for counter electrodes in Pt-free dye-sensitized solar cells","authors":"M.S. Nithyapriya ,&nbsp;Muthu Mariappan Sivalingam ,&nbsp;M. Navaneethan ,&nbsp;J. Archana","doi":"10.1016/j.optmat.2024.116243","DOIUrl":"10.1016/j.optmat.2024.116243","url":null,"abstract":"<div><div>The work function (WF) of the counter electrode (CE) predominantly determines the device performance of dye sensitized solar cells (DSSCs) as it controls the electron transfer rate for dye regeneration. Hence in this work, tin disulphide/reduced graphene oxide (SnS₂/rGO) composites were synthesized with different wt.% of rGO (3, 5, 7, 10 %) and investigated their performance in DSSCs applications. At the outset, the formation of pristine SnS₂ and SnS₂/rGO composites were confirmed through X-ray diffraction and Raman spectral analysis. The morphological imaging revealed the micro flower-like structure of SnS₂ with cross-sectional width of 5 <span><math><mrow><mo>±</mo></mrow></math></span> 0.2 μm, and petal thickness ranges from 30.7 nm to 46.4 nm. The binding energy spectra confirms the 4+ oxidation state of Sn in both SnS₂ and 7 wt% SnS₂/rGO, suggesting that the rGO does not alter the chemical states of SnS₂. Further, the peak-to-peak separation values obtained from Cylic-Voltammetry analysis were found to be 0.37 and 0.57 V for S7 and Pt CE respectively, indicating the rapid electrolyte reduction of 7 wt% SnS₂/rGO. Finally, a photo conversion efficiency (PCE) of 7.3 % has been achieved with 7 wt% SnS₂/rGO CE which is greater than that of the PCE with Pt CE (6.5 %) and also higher than that of pristine SnS₂ with 4.7 %. The improved PCE is attributed to the reduced WF of the 7 wt% SnS₂/rGO composite as measured from the Kelvin probe force microscopy analysis, enabling the rapid redox reaction towards triiodide reduction.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116243"},"PeriodicalIF":3.8,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142533420","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}