Optical Materials最新文献

{"title":"Efficient near-infrared photoluminescence and thermal stability in Mo4+ doped lead-free halide perovskites","authors":"Chao Wang ,&nbsp;Junlin Wang ,&nbsp;Dongting Wang","doi":"10.1016/j.optmat.2025.117341","DOIUrl":"10.1016/j.optmat.2025.117341","url":null,"abstract":"<div><div>In this work, we synthesized zero-dimensional (0D) Cs₂Hf(ClBr)₆: Mo⁴⁺ perovskite powder using acid precipitation method, achieving excellent broadband near-infrared (NIR) emission performance. The emission spectrum covers the infrared wavelength range of 750–1100 nm, with a center at 900 nm and a full width at half maximum of 125 nm. The near-infrared phosphor converted LED made of this material exhibits excellent stability in the range of 100 mÃ600 mA. The pc-LEDs still maintains a luminescence intensity of over 90 % even after being continuously powered on for 6 h at different currents. The temperature-dependent (80−480 K) NIR PL spectra also shows good thermal stability. In addition, this material and its LED exhibit efficient near-infrared emission in the near-infrared region, demonstrating excellent performance in applications such as vein photography, night vision and non-destructive testing of circuit boards. This study brings new ideas to the near-infrared emission theory and material design of perovskite materials and lays the foundation for their practical applications in the near-infrared field.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"167 ","pages":"Article 117341"},"PeriodicalIF":3.8,"publicationDate":"2025-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144678797","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":"Sputtered AlN/Al2O3 distributed Bragg reflectors on amorphous glass","authors":"Renjun Liu ,&nbsp;Chandra Kant ,&nbsp;Hüseyin Bilge Yağcı ,&nbsp;Haifeng Qi ,&nbsp;Hong Ji ,&nbsp;William Solari ,&nbsp;Sri Datta Aneesh Chodavarapu ,&nbsp;Benxuan Li ,&nbsp;Sheng Wang ,&nbsp;Anthony J. Bennett ,&nbsp;Ning Zhang ,&nbsp;Ingo Ludtke ,&nbsp;Wenlong Ming ,&nbsp;Bo Hou","doi":"10.1016/j.optmat.2025.117332","DOIUrl":"10.1016/j.optmat.2025.117332","url":null,"abstract":"<div><div>With the sharp increase in the demand for vertical-cavity surface-emitting lasers (VCSELs), the need for high-performance and rapid thermal dissipation distributed Bragg reflectors (DBRs) has become significantly urgent in photonic and optoelectronic devices. In this work, a novel DBR composed of alternating aluminum nitride (AlN) and alumina (Al₂O₃) has been designed and prepared on an amorphous sodium silicate glass substrate via radio frequency (RF) sputtering technique. The effect of a number of stacks on the reflectance of DBRs has been explored theoretically and experimentally. The results show that AlN/Al₂O₃ DBRs with 11.5 pairs can achieve 96 % of reflectance. The stopband bandwidth covers from 720 to 880 nm. The surface roughness is around 2.9 nm with an area of 9 μm². Our sputtering-grown AlN/Al₂O₃ DBR with high reflectance and low surface roughness has laid a good foundation for the potential application of high-performance and rapid thermal dissipation DBRs in photonic integrated circuits.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"167 ","pages":"Article 117332"},"PeriodicalIF":3.8,"publicationDate":"2025-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144670924","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":"Gamma-ray-induced enhancement of red emission in Ga2-xEuxO3 phosphors for harsh radiative environment applications","authors":"Abbas Nasir ,&nbsp;Zhe Qin ,&nbsp;Zhuan Zhao ,&nbsp;Meicong Wang ,&nbsp;Muhammad zakria ,&nbsp;Yunqi Zhong ,&nbsp;Teng Ma","doi":"10.1016/j.optmat.2025.117335","DOIUrl":"10.1016/j.optmat.2025.117335","url":null,"abstract":"<div><div>Eu³⁺-doped β-Ga₂O₃ (Ga_2-xEu_xO_3, x = 0.01–0.06, Δx = 0.01) red phosphors were fabricated in cylindrical pellet shape via the solid-state reaction route. An in-depth analysis of photoluminescence (PL), surface morphology, three-dimensional profiles, crystal structure, and X-ray photoelectron spectroscopy spectra has been carried out both before and following exposure to a 2 Mrad dose of gamma-ray irradiation. The PL results revealed that gamma-ray-irradiated samples have significantly higher luminescence intensity compared to their counterparts. Notably, for the sample with a 5 % Eu³⁺ doping concentration, the luminescence intensity of the red emission, which peaks at 613 nm under 394 nm excitation, increased by 14.5 ± 1 % after irradiation. This phenomenon challenges the conventional wisdom that high-energy radiation always degrades optical properties. We demonstrate that gamma rays create beneficial defects (e.g. oxygen vacancies and lattice distortions) that suppress non-radiative recombination and enhance Eu³⁺ emission. Additionally, the Ga_2-xEu_xO₃ samples demonstrated remarkable durability to gamma-ray radiation up to a dose of 2 Mrad, which corresponds to the cumulative radiation dose experienced by satellites in low-Earth orbit over nearly 80 years. These optical and structural properties suggest that the Eu³⁺-doped Ga₂O₃ is a promising red phosphorescent material for applications in harsh radiative environments.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"167 ","pages":"Article 117335"},"PeriodicalIF":3.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144656278","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":"Development of push-pull carbazole-based organic semiconductors with extended π-linkers for enhanced red-shifted absorption-emission and improved charge mobilities","authors":"Viktorija Andruleviciene ,&nbsp;Rita Butkute ,&nbsp;Oleksandr Bezvikonnyi ,&nbsp;Dmytro Volyniuk ,&nbsp;Gjergji Sini ,&nbsp;Azzuliani Supangat ,&nbsp;Juozas Vidas Grazulevicius","doi":"10.1016/j.optmat.2025.117334","DOIUrl":"10.1016/j.optmat.2025.117334","url":null,"abstract":"<div><div>This work presents the design and synthesis of a series of new organic semiconductors featuring a push-pull system, with two types of <em>π</em>-linkers with the different conjugation lengths between the electron-donating carbazole moiety and electron-withdrawing cyano groups. The findings provide insight into the role of conjugated <em>π</em>-linkers between donor and acceptor units in facilitating efficient charge transfer and tuning conjugation length. Compounds with the extended <em>π</em>-linker exhibit enhanced conjugation efficiency resulting in improved light absorption, red-shifted photoluminescence, and improved hole mobility. This study highlights the potential for design of organic semiconductors with tunable <em>π</em>-conjugation in push-pull systems for optoelectronic applications.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"167 ","pages":"Article 117334"},"PeriodicalIF":3.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663491","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":"Unravelling the nonlinear optical activity, solvent effects, DFT analysis, and optical waveguide property of pyrrole-derived hydrazone","authors":"Venkatasamy Meenatchi ,&nbsp;Sang Jo Lee ,&nbsp;Ian John L. Castro ,&nbsp;Chong Hoon Kwak ,&nbsp;Sung Soo Han","doi":"10.1016/j.optmat.2025.117330","DOIUrl":"10.1016/j.optmat.2025.117330","url":null,"abstract":"<div><div>Nonlinear organic hydrazones exhibit exceptional optical waveguide signals, making them promising for fabricating optoelectronic, sensor, and nanophotonic devices. Therefore, this study aims to explore the physicochemical, optical, and nonlinear optical properties of a fluorescent hydrazone <em>N</em>'-((1H-pyrrol-2-yl)methylene)-4-toluenesulfonohydrazide (PTS) synthesized by condensation of 4-toluenesulfonyl hydrazide with pyrrole-2-carboxaldehyde. Fourier transform infrared spectroscopy, nuclear magnetic resonance spectroscopy, and liquid chromatography-mass spectrometry confirmed PTS formation. Powder X-ray diffraction, field emission scanning electron microscopy, and thermogravimetric analysis revealed the phase purity, crystalline structure, and improved thermal stability of PTS. The solvent study results showed significant Stokes-shifted emissions in polar solvents due to the twisted intramolecular charge transfer state. Both solid-state absorption and fluorescence spectra revealed enhanced light-responsiveness and light-emission signals of PTS. A density functional theory analysis was applied to investigate the nonlinear optical property, revealing a high first-order hyperpolarizability (<em>β</em>_tot ≈ 5.938 × 10⁻³⁰ esu) for PTS. Z-scan measurements revealed a nonlinear refractive index change (<em>Δn</em>₀) of 8.5 × 10⁻³, a nonlinear absorption coefficient (<em>β</em>) of 6.9 × 10⁻² cm/W, and a two-photon absorption-related change in absorption (<em>Δα</em>_TPA) of 4.4 × 10³ cm⁻¹. The obtained PTS crystals exhibited green and red dual fluorescence upon optical excitation, as confirmed by confocal fluorescence microscopy studies, indicating its optical wave-guiding potential. The brilliant dual-color fluorescence emission of PTS is crucial for fabricating optoelectronic, optical sensors, and photonic devices.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"167 ","pages":"Article 117330"},"PeriodicalIF":3.8,"publicationDate":"2025-07-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144678798","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":"Optimization of mechanoluminescence properties of ZnS:M@Al2O3-PDMS (M = Mn, Cu) composites based on synergistic effects of temperature and composition","authors":"Yongzhen Li,&nbsp;Xiangmeng Li,&nbsp;Yunfei Li,&nbsp;Chaohui Wang,&nbsp;Huifen Wei,&nbsp;Shuai Li,&nbsp;Yajun Zhang,&nbsp;Xijing Zhu","doi":"10.1016/j.optmat.2025.117331","DOIUrl":"10.1016/j.optmat.2025.117331","url":null,"abstract":"<div><div>When ZnS:M@Al₂O₃ (M = Mn, Cu) is combined with PDMS, although it has a certain luminescence potential, due to its weak luminescence intensity, it is difficult for common spectral sensors on the market to effectively detect its luminescence signal, and it must be detected by precision instruments and devices with high sensitivity, which is particularly prominent in the fields of flexible electronics and intelligent sensing. This study systematically investigates the synergistic effects of temperature (60–90 °C) and composition ratio (2:8 to7:3) on the mechanoluminescence performance of ZnS:M@Al₂O₃-PDMS composites (M = Mn, Cu). RGB analysis and spectral characterization showed that low temperature (60 °C) and moderate to high ZnS:M@Al₂O₃ content enhanced the luminescence intensity. However, excessive particles and high temperature (90 °C) degrade the luminescence performance due to an increase in Young's modulus and aggregation. Mechanistic studies indicate that PDMS with a low Young's modulus (2.679–3.393 MPa) at 60 °C facilitates stress transfer and internal electric field enhancement in ZnS particles, optimizing electron-hole recombination. The application successfully demonstrated its potential in motion monitoring and interactive display of pressure response for self-powered soft robots, laying the foundation for the further development and application of ML materials.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"167 ","pages":"Article 117331"},"PeriodicalIF":3.8,"publicationDate":"2025-07-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144663490","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":"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}