Optical Materials最新文献

{"title":"White light and energy transfer of Tm3+, Tb3+ and Sm3+ in zinc borophosphate glass","authors":"Marcos Aurélio Rodrigues Sousa Júnior ,&nbsp;Otávio Cândido da Silva Neto ,&nbsp;Thiago Augusto Lodi ,&nbsp;Franciana Pedrochi ,&nbsp;Alysson Steimacher","doi":"10.1016/j.optmat.2025.117148","DOIUrl":"10.1016/j.optmat.2025.117148","url":null,"abstract":"<div><div>The incorporation of rare earth ions into glass materials can offer promising applications for white light emission devices. In this work, Tm₂O₃, Tb₄O₇, and Sm₂O₃ single and triply doped zinc borophosphate (ZBP) glasses were prepared by the melt-quenching method. The amorphous nature of the ZBP glasses was confirmed through XRD measurements. The FTIR results showed that the vitreous network is composed of BO₃ and BO₄ structures, symmetric and asymmetric vibrations related to phosphate groups, and vibrations in ZnO₄ units. The absorption spectra present characteristic peaks of Tm³⁺, Tb³⁺ and Tm³⁺; the triply doped samples presented an increase of Tm³⁺ bands with the Tm₂O₃ addition. The excitation spectra of the single doped samples demonstrate that the wavelength of 357 nm is the most suitable for the excitation for the triply doped samples. Under excitation at 357 nm, the luminescence results of the single-doped samples revealed the main emission bands of the studied ions, blue, green and red. The combination of these emission colors was verified through the CIE diagram, the triply doped samples present CIE coordinates close to the ideal white region, with the best result for the ZBP – 0.5 TTS sample. The color rendering index (CRI) calculations confirmed that this sample achieved the highest value (56) among the triply doped samples, surpassing commercial LEDs, which are 22 and 38. The energy transfer efficiency (η) and Quantum Yield (QY) for triply doped glasses was also investigated. The photoluminescence lifetime values show a decrease with increasing Tm₂O₃ concentration for the concentrations of 0.25–0.75 mol% of Tm₂O₃. The results suggest that the studied glasses have potential applications in white light emitting diodes (W-LEDs).</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"165 ","pages":"Article 117148"},"PeriodicalIF":3.8,"publicationDate":"2025-05-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144084499","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":"A stabilized Z-type NH2-MIL101(Fe, Cu)/WO3 composite enhancing photo-Fenton like degradation of levofloxacin","authors":"Yuxi Liu,&nbsp;Wenjing Zhang,&nbsp;Weimeng Chi,&nbsp;Yuxuan Liu,&nbsp;Ying Chen,&nbsp;Yuning Liang","doi":"10.1016/j.optmat.2025.117117","DOIUrl":"10.1016/j.optmat.2025.117117","url":null,"abstract":"<div><div>As a potential Fenton catalyst, Fe-based organic frameworks (Fe-MOFs) severely limit their application in practical heavy pollution due to their slow cycling rate. In this work, a novel photocatalyst (NH₂-MIL101(Fe, Cu)/WO₃) was synthesized using a two-step hydrothermal method. Research on photocatalytic activity revealed that NH₂-MIL101(Fe, Cu)/WO₃, when combined with H₂O₂, exhibits higher degradation efficiency compared than pure NH₂-MIL101(Fe, Cu) or WO₃ alone, achieving up to 90 % degradation of levofloxacin (LEV) under visible light irradiation. In addition, the effects of hydrogen peroxide dosage, pH and other factors on degradation performance were studied, and the results demonstrated good stability even after multiple cycles. This excellent photocatalytic performance is attributed to the formation of heterogeneous structures as well as the doping of copper ions. This not only inhibits the electron-hole recombination, but also improves the redox capacity of the catalyst accelerating the regeneration of Fe³⁺. This work offers a way to enhance the photo-Fenton activity of Fe-MOF-based catalysts.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"165 ","pages":"Article 117117"},"PeriodicalIF":3.8,"publicationDate":"2025-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934973","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":"Plasma-driven growth mechanisms of ZnO:Cu sputtered Films: Emission spectroscopy insights","authors":"Marzieh Abbasi-Firouzjah ,&nbsp;Mohammad Mahdi Shahidi ,&nbsp;Esmaeil Salahi","doi":"10.1016/j.optmat.2025.117146","DOIUrl":"10.1016/j.optmat.2025.117146","url":null,"abstract":"<div><div>This study provides significant insights into the growth mechanisms and optical properties of copper-doped ZnO films sputtered in an oxygen-argon plasma environment. Using optical emission spectroscopy, we demonstrated the critical influence of gas composition on the emission characteristics, particularly the variations in the intensity of transition lines associated with Ar, O, Zn, and Cu species. Our findings indicate that increasing the concentration of active oxygen species enhances reaction rates and promotes more effective oxidation, which are crucial for improving film quality. However, this improvement is counteracted by a diminishing concentration of argon, which reduces the density of metal species available for deposition. The analysis reveals that there exists an optimal flux ratio that maximizes film growth and crystallinity; beyond this point, excessive Cu incorporation disrupts the ZnO lattice, leading to a decline in crystalline quality. Additionally, the films exhibit high transmittance (&gt;85 %) at low Cu concentrations, whereas higher Cu content decreases transparency and narrows the optical band gap. The findings suggest that minimal Cu doping has negligible impact on transparency, while higher doping levels significantly alter the optical properties, reflecting the complex interplay between Cu and ZnO within the crystal structure. Finally, this research enhances the understanding of the deposition process and offers pathways for optimizing the optical and structural properties of ZnO:Cu films for advanced technological applications.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"165 ","pages":"Article 117146"},"PeriodicalIF":3.8,"publicationDate":"2025-05-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943690","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":"Thermochromic performance improvement based on W-VO2@AA core-shell structure nanoparticles","authors":"Jiran Liang ,&nbsp;Chengye Zhang ,&nbsp;Yong Yu ,&nbsp;Yunfei Bai ,&nbsp;Guixiang Yang ,&nbsp;Dequan Zhang ,&nbsp;Dangyuan Lei","doi":"10.1016/j.optmat.2025.117126","DOIUrl":"10.1016/j.optmat.2025.117126","url":null,"abstract":"<div><div>Vanadium dioxide (VO₂) is a promising candidate for thermochromic smart windows for its thermally induced metal-to-insulator phase transition properties. Tungsten doping can reduce the phase transition temperature of VO₂ (W-VO₂) to near room temperature but deteriorates the thermochromic performance. A W-VO₂@AA core-shell structure was proposed to improve the thermochromic performance by enhancing the luminous transmittance and solar modulation, simultaneously. The W-VO₂@AA core-shell structure was prepared by the hydrothermal method based on the surface molecular coordination effect, and the shell thickness of AA was modulated by glacial acetic acid. The phase transition temperature of W-VO₂@AA is 34.53 °C. The solar modulation of the W-VO₂@AA/PVP composite film-based smart windows is increased by 80.2 % (from 5.65 % to 10.18 %) compared with W-VO₂/PVP, and the luminous transmittance is maintained satisfactorily at 70.52 %. This enhancement is primarily attributed to the injection of electrons from AA into the W-VO₂ lattice, which enhances the localized surface plasmon resonance absorption performance. Moreover, the refractive index of AA is between PVP and W-VO₂, which decreases the reflectance. This work provides a new strategy to overcome the trade-off relationship between the two thermochromic properties of W-VO₂.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"165 ","pages":"Article 117126"},"PeriodicalIF":3.8,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948151","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":"Self-powered narrowband near-infrared photodetector based on polyoxometalate compound","authors":"Ali Akbar Hussaini ,&nbsp;Yasemin Torlak ,&nbsp;Sümeyra Büyükçelebi ,&nbsp;Mahmut Kus ,&nbsp;Murat Yıldırım","doi":"10.1016/j.optmat.2025.117144","DOIUrl":"10.1016/j.optmat.2025.117144","url":null,"abstract":"<div><div>Narrowband photodetectors are employed in optical communication, where designated wavelengths are used to transmit data, and in environmental sensing to identify specific gases that absorb distinct wavelengths of light. In this study, we developed a novel polyoxometalate compound for application as a near-infrared (NIR) photodetector. Li₆ [α-P₂W₁₈O₆₂]^-.28H₂O compound was synthesized successfully and was characterized using ³¹P NMR, FT-IR, UV–Vis, C–V, SEM, TEM, and AFM. We used Li₆ [α-P₂W₁₈O₆₂]^-.28H₂O compound as interlayer in Schottky type photodetector structure. Photodiode and photodetector measurements were performed under various solar intensities (20, 40, 60, 80, and 100 mW), ultraviolet, visible, and near-infrared wavelengths ranging from 351 to 1600 nm. Notably, the device exhibited an excellent responsivity, external quantum efficiency, and detectivity under near-infrared wavelengths. It showed 64.17 mA/W responsivity, 4.34 × 10¹⁰ Jones detectivity and 7.96 % external quantum efficiency at 1000 nm and 0 bias voltage. Moreover, the device demonstrated 4.736 A/W responsivity and 8.57 × 10¹¹ Jones detectivity under solar light. Furthermore, this research introduces a novel compound for developing narrowband photodetectors utilizing polyoxometalate.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"165 ","pages":"Article 117144"},"PeriodicalIF":3.8,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143943692","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":"Triple core-shell nanoparticles with Er3+ ultraviolet-blue upconversion emissions via energy regulation","authors":"Meijuan Liu ,&nbsp;Hao Lin ,&nbsp;Haoxuan Sun ,&nbsp;Haonan Zhao ,&nbsp;Chaofa Liang ,&nbsp;Yulin Gong ,&nbsp;Dekang Xu ,&nbsp;Shusheng Pan ,&nbsp;Liang Li","doi":"10.1016/j.optmat.2025.117145","DOIUrl":"10.1016/j.optmat.2025.117145","url":null,"abstract":"<div><div>So far, existing research on upconversion nanomaterials has concentrated on tuning luminescence properties through the design of core-shell structure and the strategic incorporation of dopant ions, enabling modulation in emission color, intensity, and excitation response. Among them, most of the studies have focused on multilayer (four or more layers) core-shell structures. However, such systems often face challenges related to complex preparation processes and inefficiencies. In this work, we aimed to simplify the system by employing NaErF₄:Nd,Yb,Ce@NaYF₄:Yb@NaYF₄ core-shell-shell nanoparticles and optimizing the doping combination of rare-earth ions for luminescence intensity control. Compared to traditional four-layer designs, this study provides the following significant advantages: (1) ultraviolet-blue upconversion emissions can be achieved without the incorporation of commonly used Tm³⁺ ions, overcoming the concentration quenching problem associated with Tm³⁺, and (2) the luminescence tuning in response to dual-wavelength (980 and 1532 nm) is achieved by a three-layer core-shell structure, significantly reducing system design complexity, fabrication challenges, and improving production efficiency. By validating its fluorescence emission performance, these nanoparticles exhibit unique potential application in photodynamic therapy and real-time fluorescence monitoring.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"165 ","pages":"Article 117145"},"PeriodicalIF":3.8,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144071181","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":"Down and upconversion luminescence in Pr3+/Yb3+ -codoped α-NaYF4 nanocrystals","authors":"Y. Cheroura ,&nbsp;Z. Smara ,&nbsp;D. Boyer ,&nbsp;A. Potdevin ,&nbsp;A. Chafa ,&nbsp;O. Ziane ,&nbsp;R. Mahiou","doi":"10.1016/j.optmat.2025.117140","DOIUrl":"10.1016/j.optmat.2025.117140","url":null,"abstract":"<div><div>Cubic α-NaYF₄ nanometer-sized crystals singly doped with Pr³⁺ and codoped with Pr³⁺ and 20 % Yb³⁺ were synthesized by an original coprecipitation route at 60 °C during 1 h. The obtained nanoparticles exhibited primary particles showing cubic shape with mean sizes around ∼49 nm. Down and up-conversion mechanisms were studied versus the Pr³⁺ concentration in singly Pr³⁺ doped and Pr³⁺, Yb³⁺ codoped materials. Blue/red and NIR excited emission spectra as well as kinetics of both ³P₀ and ¹D₂ levels of Pr³⁺ have been studied qualitatively. DC and UC were evidenced indicating that Pr³⁺→Pr³⁺ and Pr³⁺↔Yb³⁺ energy transfers occur, which are strongly dependent on the Pr³⁺ concentration. The obtained results indicate that both Pr³⁺ and Yb³⁺ play the role of sensitizer or acceptor, leading to the modification of the DC/UC efficiency ratio due to a feedback energy transfer. Such assumption is discussed in the frame of three levels system. It gives insights into factors involved in the concentration quenching in both DC and UC materials based on the Pr³⁺/Yb³⁺ pairs.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"165 ","pages":"Article 117140"},"PeriodicalIF":3.8,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143934971","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":"Flexible Nd3+ doped TeO2–ZnO planar waveguide","authors":"Marcos V.M. Nishimura ,&nbsp;Daniel K. Kumada ,&nbsp;Stefano Varas ,&nbsp;Alessandro Chiasera ,&nbsp;Maurizio Ferrari ,&nbsp;Luciana R.P. Kassab","doi":"10.1016/j.optmat.2025.117109","DOIUrl":"10.1016/j.optmat.2025.117109","url":null,"abstract":"<div><div>Fabrication and characterization of Nd³⁺-doped TeO₂–ZnO planar waveguide deposited on a commercial AS 87 eco SCHOTT glass substrate, a flexible and ultrathin material, using RF magnetron sputtering is presented. The waveguide was evaluated using scanning electron microscopy, atomic force microscopy, m-line spectroscopy, Raman and photoluminescence spectroscopies. Film thickness of 500 ± 10 nm was obtained, with an average surface roughness of 1.2 nm. Attenuation coefficients in the near-infrared and visible regions were measured, and the refractive index was determined to be approximately 2.0 in these spectral regions. The waveguide exhibited attenuation coefficient of 1 dB/cm in the NIR and efficient Nd³⁺ emission at ∼890 nm, ∼1064 nm, and ∼1350 nm. This study highlights the significant potential of the Nd³⁺-doped TeO₂–ZnO system for advanced flexible optical devices and opens new perspectives for integrated photonics.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"165 ","pages":"Article 117109"},"PeriodicalIF":3.8,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144069104","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":"Photonic crystal structural color on textiles","authors":"Hafeezullah Memon ,&nbsp;Zhen Yin ,&nbsp;Juming Yao ,&nbsp;Yan Wang ,&nbsp;Parpiev Khabibulla ,&nbsp;Juramirza Kayumov ,&nbsp;Guocheng Zhu","doi":"10.1016/j.optmat.2025.117142","DOIUrl":"10.1016/j.optmat.2025.117142","url":null,"abstract":"<div><div>Structural coloration in textiles based on photonic crystals has recently been studied by numerous researchers around the world. This review discusses the recent research being done in the area of structurally colored textiles and discusses the mechanism involved in these structural colors. In addition, it comprehends the factors that influence the final structural color in detail that have been studied in literature; also, it proposes how the structural color may be finely tuned by systematically altering these factors. Moreover, it also elucidates the methods that have been used to evaluate the structure and color stability of the textiles. Finally, it also shares insights about the possible health effects that might be caused due to the use of these metallic nanoparticles to achieve structural color and proposes the potential applications.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"165 ","pages":"Article 117142"},"PeriodicalIF":3.8,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143931941","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":"Tunability of photoluminescent properties and energy transfer behaviour of thermally stable BaZr(PO4)2: Dy3+, Eu3+ phosphor for warm white LEDs and indoor lighting applications","authors":"Shweta Yadav,&nbsp;A.S. Rao,&nbsp;Deshraj Meena","doi":"10.1016/j.optmat.2025.117134","DOIUrl":"10.1016/j.optmat.2025.117134","url":null,"abstract":"<div><div>In the present work solid state reaction route has been employed to synthesize Dy³⁺ doped and Dy³⁺/Eu³⁺ co-doped BaZr(PO₄)₂ (BZP) phosphor samples. The X-Ray diffraction studies revealed formation of pure phase with monoclinic crystal structure. The Photoluminescent studies of BZP: Dy³⁺ featured emission peaks at 482 nm and 576 nm thus leading to emission in white region. Further, the co-doping of phosphor with Eu⁺ supplements the spectrum with a red component at 612 nm thus shifting the correlated color temperature (CCT) from cooler to warmer region. The variation in relative concentration of Dy³⁺ and Eu³⁺ ions along with the variation in excitation wavelength generate tunable photoluminescent properties. The energy transfer mechanism between Dy³⁺ and Eu³⁺ has been studied using Dexter and Riesfeld's theory which revealed that interactions responsible for energy transmission from Dy³⁺ to Eu³⁺ are dipole-dipole in nature.The BZP phosphor coactivated with Dy³⁺ and Eu³⁺ retained 87.87 % of luminous intensity at 420 K and possesses activation energy value of 0.267 eV thus demonstrating excellent thermal stability. The thermal stability and flexible color tunability of the co-activated BZP phosphor makes it a befitting contender for utilization in white light emitting diodes.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"165 ","pages":"Article 117134"},"PeriodicalIF":3.8,"publicationDate":"2025-05-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143948149","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}