Optical Materials最新文献

{"title":"Rational design of Pt nanocluster-modified g-C3N4/TiO2 heterojunction with enhanced charge separation for high-efficiency photocatalytic degradation of RhB","authors":"Bo Li,&nbsp;Yujia Liu,&nbsp;Lishuai Song,&nbsp;Yuyu Zhang,&nbsp;Nan Liu,&nbsp;Zequan Li","doi":"10.1016/j.optmat.2025.117325","DOIUrl":"10.1016/j.optmat.2025.117325","url":null,"abstract":"<div><div>This study successfully constructs a g-C₃N₄/TiO₂ heterojunction and its Pt nanocluster-modified composite (Pt_C–CN–TiO₂) through an interface engineering strategy, systematically investigating their photocatalytic RhB degradation performance and mechanisms. Under visible light irradiation, Pt_C–CN–TiO₂ achieves a RhB degradation efficiency of 99.29 % within 160 min, with a 34.3 % increase in reaction rate constant compared to the Pt-free catalyst. Mechanistic studies reveal that Pt acts as an electron sink, facilitating the generation of ·O₂⁻, while inducing interfacial electronic structure renormalization to enhance surface hydroxyl adsorption and oxygen vacancy activity. Cycling experiments confirm its exceptional stability. This work provides novel interface engineering insights and theoretical foundations for designing highly efficient and stable solar-driven photocatalysts.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"167 ","pages":"Article 117325"},"PeriodicalIF":3.8,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656275","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":"Investigation of aluminum coatings deposited by RF and DC magnetron sputtering as optical-blocking layers for optical blocking filters","authors":"Na Gao ,&nbsp;Tianxiang Chen ,&nbsp;Yupeng Xu ,&nbsp;Huilin He ,&nbsp;Yuanyuan Du ,&nbsp;Zhenyu Wu ,&nbsp;Yichen Liu","doi":"10.1016/j.optmat.2025.117329","DOIUrl":"10.1016/j.optmat.2025.117329","url":null,"abstract":"<div><div>In the field of X-ray space detection, the optical blocking filter that can transmit X-ray and block UV, visible and infrared (UV-VIS-IR) light is required. Reducing the UV-VIS-IR light transmittance of optical blocking filters is beneficial for enhancing the detection accuracy of X-ray detectors. The combination of polyimide film and aluminum coating is the most commonly used design of optical blocking filter. Aluminum coatings are prepared using the magnetron sputtering method. The density of the aluminum coating directly affects the performance of optical blocking filter in blocking UV-VIS-IR light. The microstructure, crystallinity, and optical properties of the aluminum coatings on OBFs prepared by RF and DC magnetron sputtering modes were investigated. The results indicate that the optical properties of the optical blocking filter prepared by DC sputtering are superior to those prepared by RF sputtering.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"167 ","pages":"Article 117329"},"PeriodicalIF":3.8,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656205","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":"Investigation of the TeO2–ZnO–La2O3-WO3 tellurite glass: a promising visible and Mid-infrared acousto-optic material","authors":"Yu He ,&nbsp;Yingying Wang ,&nbsp;Ao Cui ,&nbsp;Miao Wu ,&nbsp;Shixun Dai","doi":"10.1016/j.optmat.2025.117327","DOIUrl":"10.1016/j.optmat.2025.117327","url":null,"abstract":"<div><div>A novel 70TeO₂–15ZnO-6.5La₂O₃-8.5WO₃ tellurite glass (mol%, TZLW) was synthesized via melt-quenching. The potential of this glass as an acousto-optic (AO) material in the visible to Mid-infrared range (0.40–5.4 μm) was evaluated. With a large diameter (50 mm), low hydroxyl absorption (0.2 cm⁻¹ at about 3.4 μm) and high optical homogeneity (<em>Δn</em> = 5.941 × 10⁻⁴), the glass shows great potential for high-performance optical devices. Comprehensive characterization of optical, thermomechanical, laser-induced damage threshold (LIDT) and AO properties was performed, with particular emphasis on their correlation with structural features revealed by Raman spectrum. The measured acoustic attenuation at 100 MHz was 3.94 dB/cm, corrected to 3.31 dB/cm using an interfacial reflection correction method - the first reported application of such methodology in AO glass systems, to the best of our knowledge. The LIDT measured at 800 nm (130 fs pulse width, 1 kHz repetition rate) reaches 0.572 J/cm², which is 4 times greater than commercial As₂S₃ glass. Moreover, the AO figure of merit <em>M</em>_<em>2</em> reaches 37.2 × 10⁻¹⁵ s³/kg at 1550 nm, exceeding all previously reported tellurite glasses and being 24 times greater than commercial quartz glass.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"167 ","pages":"Article 117327"},"PeriodicalIF":3.8,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656245","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":"Photodegradation based on ZnIn2S4/ZnTiO3 heterojunction for the removal of tetracycline and nitenpyram from wastewater","authors":"Qian Yang,&nbsp;Jing shi,&nbsp;Jiaqi Wei,&nbsp;Shaoye Li,&nbsp;Yangqing He","doi":"10.1016/j.optmat.2025.117326","DOIUrl":"10.1016/j.optmat.2025.117326","url":null,"abstract":"<div><h3>Background</h3><div>Despite the numerous reports on the application of perovskite oxide ZnTiO₃ in photodegradation, literature specifically addressing the degradation of tetracycline (TC) remains sparse. Furthermore, there is significant variability in the reported photodegradation rates across different studies. Therefore, it is meaningful to re-evaluate and enhance the efficacy of ZnTiO₃ for the photodegradation of TC.</div></div><div><h3>Motivation</h3><div>ZnTiO₃ and ZnIn₂S₄ are both n-type semiconductor materials. The valence band (VB) and conduction band (CB) levels of ZnIn₂S₄ are 1.64 V and −0.68 V, respectively, which align well with ZnTiO₃. So our objective is to construct a ZnIn₂S₄/ZnTiO₃ heterojunction to synergistically enhance the photocatalytic activity of ZnTiO₃ through improved charge separation.</div></div><div><h3>Methods</h3><div>In this study, ZnIn₂S₄/ZnTiO₃ were synthesized via a hydrothermal method using ZnTiO₃, ZnCl₂, InCl₃·4H₂O and Thioacetamide as raw materials, and subjected to a water bath reaction at 80 °C for 2 h. The structure and morphology were analyzed through XRD, SEM, XPS and other characterization techniques.</div></div><div><h3>Results and conclusions</h3><div>The optimum 25 % ZnIn₂S₄/ZnTiO₃ catalyst demonstrates superior photocatalytic degradation towards TC and nitenpyram, achieving removal rates of 82 % and 67 % within 210 min, significantly surpassing the efficiency of pure ZnTiO₃. Free radical scavenging experiments indicate that the order of active species contributing to the photodegradation of TC and nitenpyram is ·O₂⁻ &gt; h⁺ &gt; ·OH. These findings highlight the potential application of ZnIn₂S₄/ZnTiO₃ in the photocatalytic degradation of specific antibiotics and pesticides in wastewater.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"167 ","pages":"Article 117326"},"PeriodicalIF":3.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656243","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":"Single-walled carbon nanotube pristine films: Thickness determination, antireflective properties and two-photon 3D lithography demonstration","authors":"Denis M. Zhigunov ,&nbsp;Margarita I. Sharipova ,&nbsp;Yury G. Gladush ,&nbsp;Dmitry V. Krasnikov ,&nbsp;Vladimir O. Bessonov ,&nbsp;Andrey A. Fedyanin ,&nbsp;Albert G. Nasibulin","doi":"10.1016/j.optmat.2025.117289","DOIUrl":"10.1016/j.optmat.2025.117289","url":null,"abstract":"<div><div>We present a straightforward approach for measuring the thickness of highly porous and rough single-walled carbon nanotube (SWCNT) pristine thin films. Using the developed approach, the linear dependence of the film thickness on its absorbance at 550 nm was obtained with a slope coefficient of 404 nm, which can be used as a calibration curve for an optical determination of SWCNT pristine film thickness on the basis of spectrophotometry measurements. Transmittance and reflectance of free-standing SWCNT pristine films with thicknesses in the range of 20–120 nm are studied, and ultra-low specular reflectance below 0.05 % is obtained for the thinnest membrane. Perspectives of SWCNT-based antireflective coatings are explored using Si wafer as a reference. Finally, femtosecond laser 3D lithography is performed using free-standing SWCNT film as a substrate, which opens up new directions for the application of SWCNTs, for instance, in X-ray optics.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"167 ","pages":"Article 117289"},"PeriodicalIF":3.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656276","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":"Aqueous synthesis of stable Pb(OH)Br:Cu red phosphor with DFT insights into its luminescence mechanism","authors":"Jinqi Wu ,&nbsp;Xinyu Zhao ,&nbsp;Weijian Wang ,&nbsp;Sanam Attique ,&nbsp;Huihua Zheng ,&nbsp;Haiyan Zhang ,&nbsp;Wenlin Li","doi":"10.1016/j.optmat.2025.117319","DOIUrl":"10.1016/j.optmat.2025.117319","url":null,"abstract":"<div><div>Luminescent materials are revolutionizing multiple fields with their unprecedented applications, making them a prominent area of cutting-edge scientific research. Traditionally, the synthesis process involves toxic reagents that are prone to degrade and eventually lead to device instability. Herein, we communicate for the first time the aqueous synthesis of Pb(OH)Br:Cu red phosphor instead of using organic solvents, achieving outstanding stability. The chemical stability of the phosphor remains intact with almost no change in its luminescence intensity, even after being soaked in ethanol and deionized water for ten days. According to first-principles calculations, the doping of Cu⁺ leads to the introduction of defect energy levels and a significant reduction in the bandgap width, enabling electron transitions between the band edges and generating strong red light under ultraviolet excitation. The phosphor operates through a bandgap emission mechanism. Our study provides a green approach for the fabrication of high-performance red phosphors, which significantly reduces the use of organic solvents and the pollution to the environment.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"167 ","pages":"Article 117319"},"PeriodicalIF":3.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656274","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":"Enhanced thermal stability and energy transfer in Mn2+ co-doped MgAl2O4:Cr3+ for potential applications","authors":"Dejian Hou ,&nbsp;Jianhong Dong ,&nbsp;Rui Huang ,&nbsp;Shaomin Lin ,&nbsp;Huihong Lin ,&nbsp;Yi Zhang ,&nbsp;Zhenxu Lin ,&nbsp;Hongliang Li ,&nbsp;Jinyan Li","doi":"10.1016/j.optmat.2025.117321","DOIUrl":"10.1016/j.optmat.2025.117321","url":null,"abstract":"<div><div>Deep-red light emitting phosphors have become a research hotspot due to their pivotal roles in plant growth and high color rendering full-spectrum white lighting fields. Herein, Mn²⁺ and Cr³⁺ doped MgAl₂O₄ phosphors were prepared by a high-temperature solid-state method in a thermal carbon reducing atmosphere, the green (Mn²⁺) and deep-red (Cr³⁺) luminescence properties were investigated, respectively. The concentration-dependent and temperature-dependent luminescence properties were discussed in detail. Energy transfer from Mn²⁺ to Cr³⁺ was demonstrated in Mn²⁺ and Cr³⁺ co-doped samples. Enhanced thermal stability and dual-excitation wavelength response of MgAl₂O₄:Cr³⁺ were achieved via co-doping with Mn²⁺. At 425 K, the integrated emission intensity of Cr³⁺ maintains 95.5 % in comparison with that at 300 K for MgAl₂O₄:0.03Mn²⁺,0.005Cr³⁺ under 400 nm excitation. Thanks to the superior deep-red luminescence properties of MgAl₂O₄:Mn²⁺,Cr³⁺, the potential applications in plant-growth lighting and high-quality warm white illumination were demonstrated.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"167 ","pages":"Article 117321"},"PeriodicalIF":3.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656886","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":"Pressure-regulated exciton engineering in two-dimensional perovskite OA2PbI4","authors":"Yongfu Liang ,&nbsp;Yuping Yang ,&nbsp;Junbo Wang ,&nbsp;Xuerui Cheng ,&nbsp;Xiang Zhu ,&nbsp;Chaosheng Yuan ,&nbsp;Kun Yang ,&nbsp;Zheng Wang ,&nbsp;Guoyong Ye","doi":"10.1016/j.optmat.2025.117323","DOIUrl":"10.1016/j.optmat.2025.117323","url":null,"abstract":"<div><div>Pressure-induced excitonic emission in two-dimensional organic-inorganic hybrid perovskites (2D OIHPs) has attracted significant interest for probing exciton dynamics and optical properties. However, such emissions typically originate from excitons trapped by pressure-induced structural distortions. In this work, we report emergent excitonic emission in 2D OA₂PbI₄ ((C₈H₁₇NH₃)₂PbI₄), likely triggered by a pressure-driven structural phase transition. Combined experimental and computational analyses reveal:(i) An exciton binding energy of 334 meV, (ii) Dominant Pb-6<em>p</em> (conduction band minimum) and I-5<em>p</em> (valence band maximum) orbital contributions, confining photon absorption and excitonic transitions primarily within the PbI₆ octahedra. At 2.2 GPa, the new PL peak emerge, attributed to pressure-induced restructuring of the inorganic PbI sublattice. This reorganization induces a phase transition and electronic modification, resulting in radiative recombination from coexisting exciton/free-carrier states. Our findings elucidate the origin of pressure-induced excitonic states in 2D OIHPs while highlighting the potential of strain engineering for manipulating exciton behavior to achieve emergent emission.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"167 ","pages":"Article 117323"},"PeriodicalIF":3.8,"publicationDate":"2025-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656247","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":"Processing and characterisation of polystyrene coatings and free-standing plates","authors":"L.J.B. Erasmus ,&nbsp;D. Poelman ,&nbsp;P.F. Smet ,&nbsp;J.J. Terblans ,&nbsp;H.C. Swart","doi":"10.1016/j.optmat.2025.117322","DOIUrl":"10.1016/j.optmat.2025.117322","url":null,"abstract":"<div><div>In this study, polystyrene (PS) coatings were prepared on quartz substrates by using a dip coating method. The refractive index, dispersion, and thickness of the coatings were determined using an extended Swanepoel's method. This method accounted for coatings coated on the front and back sides of the substrate and thickness variation across the coating. By adjusting the solution's molarity, the substrate's rate of withdrawal, and the number of coating process iterations, the impact on the coating's thickness was investigated. These findings were used to create an empirical model that allowed the thickness of the final coatings to be calculated using the experimental parameters. A quartz slide (49 mm × 49 mm x 1 mm) was coated with a 6.1 (±0.2) μm layer of PS. The thickness was verified using an independent method which demonstrated the validity of the empirical relation. Free-standing PS plates were also produced and characterised. These plates were made utilising a purposely made cast using the solution casting method. The PS samples produced have high transmittance in the UV, visible, and near-infrared wavelength ranges with an average absorption coefficient of 1.7 ± 0.9 cm⁻¹. Because of this, they are well suited for use in some optical applications.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"167 ","pages":"Article 117322"},"PeriodicalIF":3.8,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656244","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":"Visible light photoresistance and response time of samarium doped zinc oxide thin films grown by pulsed laser deposition","authors":"Yu-Tso Liao ,&nbsp;Cheng-Hui Li ,&nbsp;Jyun-Han Chen ,&nbsp;Wei-Lun Wei ,&nbsp;Shi-Yu Liu ,&nbsp;Hsiang-Lin Liu ,&nbsp;Bi-Hsuan Lin ,&nbsp;Ming-Yau Chern ,&nbsp;Fang-Yuh Lo","doi":"10.1016/j.optmat.2025.117307","DOIUrl":"10.1016/j.optmat.2025.117307","url":null,"abstract":"<div><div>Samarium doped zinc oxide (Sm:ZnO) thin films were fabricated on <em>c</em>-oriented sapphire substrates by pulsed-laser deposition with Sm dopant from 0 to 10 at.%. X-ray diffraction patterns, X-ray fluorescence mapping, and X-ray absorption near-edge structure spectra indicated uniform incorporation of Sm into ZnO lattice without secondary phase. With increasing Sm concentration, zinc vacancy or oxygen interstitial is formed to maintain electrical neutrality, which are identified by photoluminescence spectroscopy. The increasing defect concentration and decreasing exciton binding energy enhanced the photoresistance response in visible regime, where the absolute value of normalized resistance response was between 2 % and 8.79 % by 1 mW blue laser (wavelength of 450 nm) illumination for Sm:ZnO thin films. Time-dependent photoresistance measurements revealed two response times. The shorter response time, around 1.2–26.7 s, is contributed by the free electron-hole pair generation/recombination and the response of carriers trapped in deep level defects. The longer response time, around 76–858 s, is contributed by the captured oxygen on the thin film surface. Overall, the 5 at.% Sm:ZnO thin film is the best for photodetection applications due to its high photoresistance response and short response time.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"167 ","pages":"Article 117307"},"PeriodicalIF":3.8,"publicationDate":"2025-07-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656277","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}