Optical Materials最新文献_第9页

Structural, optical, photocatalytic and thermal behaviour of (Nb, Ta) co-doped WO3 nanoparticles and its application in photocatalytic degradation of MG and RhB dyes 共掺杂（Nb、Ta）WO3 纳米粒子的结构、光学、光催化和热行为及其在光催化降解 MG 和 RhB 染料中的应用

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-10-14 DOI: 10.1016/j.optmat.2024.116277

Manjeet Pawar , Poonam Nain , Saruchi Rani , Bharti Sharma , Sushil Kumar , M.A. Majeed Khan

{"title":"Structural, optical, photocatalytic and thermal behaviour of (Nb, Ta) co-doped WO3 nanoparticles and its application in photocatalytic degradation of MG and RhB dyes","authors":"Manjeet Pawar , Poonam Nain , Saruchi Rani , Bharti Sharma , Sushil Kumar , M.A. Majeed Khan","doi":"10.1016/j.optmat.2024.116277","DOIUrl":"10.1016/j.optmat.2024.116277","url":null,"abstract":"<div><div>In this communication, eco-friendly, cost effective and facile hydrothermal route was adopted to synthesize pure WO3, Nb-doped WO3 and (Nb, Ta) co-doped WO3 nanoparticles. Phase, lattice constants, crystallite size and crystallinity have been evaluated through X-ray diffraction. The insertion of Nb and Ta ions into WO3 nanoparticles was confirmed by XPS, FTIR and EDS studies. HRTEM and SAED micrographs exhibited highly nanocrystalline nature of samples. UV–visible studies was carried out to analyse nature of band gap, band gap energy, extinction coefficient, refractive index, Urbach energy and optical conductivity of prepared samples. Optical band gap was narrowed from 2.94 to 2.49 eV and Urbach energy was extended from 0.08 to 0.35 eV through co-doping of (Nb, Ta) ions into WO3 NPs. Reduction in PL intensity revealed that electron-hole pair recombination rate was decreased with co-doping of (Nb, Ta) ions. The photo-degradation efficiency of (Nb 5 %, Ta 5 %) co-doped WO3 nanophotocatalysts was 93.12 % against MG and 90.11 % against RhB dyes. The rate constant was found to be increased from 0.0107 to 0.0203 min−1 for MG and 0.0086 to 0.0174 min−1 for RhB. Thermal results exhibited the weight loss in three phase degradation processes, and thermal stability. The results showed that (Nb 5 %, Ta 5 %) co-doped WO3 NPs is a potential candidate for practical applications in environmental remediation (organic dyes degradation).</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116277"},"PeriodicalIF":3.8,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142441810","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}

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Development of Dy-doped CaHfO3 single crystal scintillator for X-ray detectors 开发用于 X 射线探测器的掺钕 CaHfO3 单晶闪烁体

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-10-13 DOI: 10.1016/j.optmat.2024.116276

Yusuke Endo , Kensei Ichiba , Daisuke Nakauchi , Kai Okazaki , Kenichi Watanabe , Takumi Kato , Noriaki Kawaguchi , Takayuki Yanagida

引用次数: 0

Structure and optical properties of alkali rare-earth double phosphates of M3RE(PO4)2 (M = K, Rb; RE = Y, La, and Lu) M3RE(PO4)2 碱稀土双磷酸盐（M = K、Rb；RE = Y、La 和 Lu）的结构和光学特性

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-10-13 DOI: 10.1016/j.optmat.2024.116278

Qun Jing, Mei Hu, Menglin Zhu, Jialong Wang, Haiming Duan, Zhaohui Chen

{"title":"Structure and optical properties of alkali rare-earth double phosphates of M3RE(PO4)2 (M = K, Rb; RE = Y, La, and Lu)","authors":"Qun Jing, Mei Hu, Menglin Zhu, Jialong Wang, Haiming Duan, Zhaohui Chen","doi":"10.1016/j.optmat.2024.116278","DOIUrl":"10.1016/j.optmat.2024.116278","url":null,"abstract":"<div><div>Designing and synthesizing phosphate nonlinear optical materials with novel structures and excellent properties remains challenging. In this work, the electronic structure and optical properties (second harmonic generation (SHG) response or birefringence) of alkali rare-earth double phosphates M3RE(PO4)2 (M = K, Rb; RE = Y, La, and Lu) are systematically investigated. It is worth mentioning that P31m-Rb3Lu(PO4)2 was successfully synthesized by a flux-method, and the UV–vis–NIR diffuse reflectance spectroscopy showed that Rb3Lu(PO4)2 exhibits a short absorption edge at 207 nm and a high transmittance of 77.9 %. Based on first-principles calculations, the results show that the birefringence of the M3RE(PO4)2 series of crystals exhibits significant differences (0.009-0.028@1064<svg><path></path></svg> nm). Subsequently, analysis of the electronic structure and the real-space atom cutting method reveals that rare-earth polyhedra play a major role in enhanced birefringence. Overall, this work enriches the study of nonlinear optical crystals of rare earth phosphates and provides a case for further exploration.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116278"},"PeriodicalIF":3.8,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142441809","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}

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Nonlinear absorption and refraction study of barium chalcogenide crystals 铬化钡晶体的非线性吸收和折射研究

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-10-13 DOI: 10.1016/j.optmat.2024.116275

E.Y. Erushin , A.A. Boyko , G.S. Shevyrdyaeva , D.V. Badikov , N.Y. Kostyukova

引用次数: 0

Enhancing low-temperature sensor applications: Synergistic effects of Ni doping and SnO2 interlayer on spin-coated ZnO thin films on glass substrate 增强低温传感器应用：玻璃基底上旋涂氧化锌薄膜的掺杂镍和二氧化锡中间层的协同效应

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-10-13 DOI: 10.1016/j.optmat.2024.116272

Maya Hanane Rezoug , Chewki Zegadi , Abdelkader Nouri , Nasr-Eddine Hamdadou , M'hamed Guezzoul

{"title":"Enhancing low-temperature sensor applications: Synergistic effects of Ni doping and SnO2 interlayer on spin-coated ZnO thin films on glass substrate","authors":"Maya Hanane Rezoug , Chewki Zegadi , Abdelkader Nouri , Nasr-Eddine Hamdadou , M'hamed Guezzoul","doi":"10.1016/j.optmat.2024.116272","DOIUrl":"10.1016/j.optmat.2024.116272","url":null,"abstract":"<div><div>This study investigates the effects of Nickel doping and a SnO2 interlayer on the structural, morphological, optical, and electrical properties of ZnO thin films. Undoped and Ni-doped ZnO films were fabricated on glass substrates, with and without an SnO2 interlayer, using the sol-gel spin coating method. The samples—denoted as ZG (undoped ZnO), NZG (Ni-doped ZnO), ZSG (undoped ZnO with SnO2 interlayer), and NZSG (Ni-doped ZnO with SnO2 interlayer)—underwent comprehensive characterization via XRD, AFM, PL, UV–Vis spectroscopy, Hall effect measurements, Hot probe, and Two-point method. XRD analysis confirmed successful Ni incorporation and enhanced ZnO crystallinity, particularly in the presence of the SnO2 interlayer. AFM analysis revealed improved grain distribution and size due to the synergistic effects of Ni doping and the SnO2 interlayer. UV–Vis results indicated significant impacts on transparency and the Urbach energy, with Ni doping alone broadening the bandgap. PL measurements showed that the synergistic effects quenched UV luminescence associated with the glass substrate, enhancing visible luminescence. Chromaticity analysis suggested that ZSG and NZSG samples are suitable for warm blue region applications. Electrical measurements revealed n-type conductivity across all films except NZG, with Ni doping increasing resistivity. Additionally, the ZSG (PTC) sensor exhibited a slightly higher sensitivity (0.3852 Ω/°C) compared to the NZSG sensor (0.3782 Ω/°C), with a similar trend observed in NTC sensors. These findings suggest that Ni-doped ZnO films with SnO2 interlayers could potentially serve as thermistors and RTDs, offering promising applications in temperature sensing and optoelectronics.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116272"},"PeriodicalIF":3.8,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432392","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}

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Optical sensing and nonlinear optical properties of Cr-doped MoO3/PEDOT:PSS Nanocomposites 掺杂铬的 MoO3/PEDOT:PSS 纳米复合材料的光传感和非线性光学特性

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-10-13 DOI: 10.1016/j.optmat.2024.116268

Karthikeyan Balasubramanian, Abhishek Kumar Choudhary, K. Arjun, Anjali Sharma

{"title":"Optical sensing and nonlinear optical properties of Cr-doped MoO3/PEDOT:PSS Nanocomposites","authors":"Karthikeyan Balasubramanian, Abhishek Kumar Choudhary, K. Arjun, Anjali Sharma","doi":"10.1016/j.optmat.2024.116268","DOIUrl":"10.1016/j.optmat.2024.116268","url":null,"abstract":"<div><div>In this study, we observed a negative UV photoresponse that switched to a positive photoresponse in Cr-doped MoO3/PEDOT:PSS nanocomposite films(NCF) prepared via drop-casting. MoO3 and Cr-doped MoO3 were synthesized using a hot oil bath co-precipitation method, combined with PEDOT:PSS (poly(3,4-ethylenedioxythiophene) doped with poly(4-styrenesulfonate)), and coated onto flexible OHP sheets. The open aperture z-scan method investigated the nonlinear optical properties of NCF on the glass substrate. The films were characterized by X-ray diffraction, scanning electron microscopic (SEM), UV–Vis spectroscopy, and Fourier Transformed Infrared (FTIR). Chromium doping caused minor changes in lattice parameters, crystalline size, and microstrain. UV spectroscopy revealed an increase in bandgap with higher Cr–MoO3 concentrations. The photoresponse of different Cr–MoO3 concentrations showed an initial current decrease under UV light, but the photoresponse became positive beyond a threshold and continued to improve. Nonlinear optical studies indicated saturable absorption in the nanocomposite. This work enhances our understanding of Cr-doped MoO3/PEDOT:PSS nanocomposites, contributing to advancements in flexible UV photodetectors and nonlinear optical applications.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116268"},"PeriodicalIF":3.8,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432390","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}

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Versatile photoluminescence behavior of polycyclic hydroxybenzimidazoles driven by intermolecular hydrogen bonding 分子间氢键驱动多环羟基苯并咪唑的多种光致发光行为

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-10-13 DOI: 10.1016/j.optmat.2024.116274

Dancho Yordanov , Rastislav Smolka , Martin Vala , Martin Weiter , Anton Georgiev

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Up-conversion thermometry based on Tm3+/Yb3+ co-doped Ba5Gd8Zn4O21 phosphors 基于 Tm3+/Yb3+ 共掺杂 Ba5Gd8Zn4O21 荧光粉的上转换温度计

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-10-13 DOI: 10.1016/j.optmat.2024.116271

Hengwei Zhou , Xiaoying Liang , LiLi Zhang , Fangfang Hu , Hai Guo

{"title":"Up-conversion thermometry based on Tm3+/Yb3+ co-doped Ba5Gd8Zn4O21 phosphors","authors":"Hengwei Zhou , Xiaoying Liang , LiLi Zhang , Fangfang Hu , Hai Guo","doi":"10.1016/j.optmat.2024.116271","DOIUrl":"10.1016/j.optmat.2024.116271","url":null,"abstract":"<div><div>Optical thermometry based on fluorescence intensity ratio of rare earth ions has attracted widespread attention due to its non-contact, fast response time, immune to interference and high sensitivity. In this study, we developed Tm3+/Yb3+ doped Ba5Gd8Zn4O21 phosphors for temperature sensing purposes. The structure, morphology and luminescent performances of these phosphors were comprehensively explored using X-ray diffraction, scanning electron microscopy and photoluminescence techniques. Furthermore, we explored the temperature-dependent fluorescence intensity ratio of Tm3+ (1G4 → 3H6 and 3F2 → 3H6) with a temperature range of 303–573 K. Our results demonstrate excellent relative sensitivity and resolution for high-temperature sensing applications (SR = 1.94 % K−1, ΔT = 0.61 K). Overall, our findings highlight the promising potential of BGZO:Tm3+/Yb3+ phosphors in optical thermometry sensing.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116271"},"PeriodicalIF":3.8,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432395","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}

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Analysis of the reasons for the enhanced green luminescence of Mg2+-doped Zn2SiO4:Mn2+ phosphor 掺杂 Mg2+ 的 Zn2SiO4:Mn2+ 荧光粉绿色发光增强的原因分析

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-10-13 DOI: 10.1016/j.optmat.2024.116261

Irina V. Ivanova, Tatiana I. Krasnenko

引用次数: 0

Preparation of fly ash zeolite supported ZnO/Co3O4 catalyst for the photocatalytic degradation of xanthate under visible light 制备粉煤灰沸石支撑的 ZnO/Co3O4 催化剂，用于在可见光下光催化降解黄原酸盐

IF 3.8 3区材料科学

Optical Materials Pub Date : 2024-10-13 DOI: 10.1016/j.optmat.2024.116262

Junxiang Wang , Qianqian Song , Xindong Zhou , Ruoyun Li , Qingming He , Jingang Wang , Hui Yang , Haodong Duan , Lin Li

{"title":"Preparation of fly ash zeolite supported ZnO/Co3O4 catalyst for the photocatalytic degradation of xanthate under visible light","authors":"Junxiang Wang , Qianqian Song , Xindong Zhou , Ruoyun Li , Qingming He , Jingang Wang , Hui Yang , Haodong Duan , Lin Li","doi":"10.1016/j.optmat.2024.116262","DOIUrl":"10.1016/j.optmat.2024.116262","url":null,"abstract":"<div><div>The development of high-value utilization technology of fly ash plays an important role in promoting environmental protection and social and economic development. In this paper, a novel composite photocatalyst Z-ZnO/Co3O4 is synthesized by loading ZnO/Co3O4 on the surface of fly ash zeolite. In addition, the properties of Z-ZnO/Co3O4 are characterized by variety of methods. The results show that the surface of cubic A-type zeolite is coated with ZnO/Co3O4 composite, forming an open spherical flower-like structure with a typical p-n heterostructure, which plays a positive role in reducing the band gap and the recombination rate of photogenerated electrons and holes of the composite catalyst, thus improving the degradation efficiency of xanthate. The degradation rate toward xanthate of Z-ZnO/Co3O4 is 97.62 % after simulated sunlight irradiation for 120 min under the optimum conditions, which is higher than that of Z-ZnO and Z-Co3O4, respectively. Meanwhile, the experimental results indicate that h+ plays a leading role in the catalytic reaction system. Furthermore, degradation rate toward xanthate of Z-ZnO/Co3O4 decreases slightly from 97.62 % to 88.24 % after five cycles, indicating its remarkable durability and stability.</div></div>","PeriodicalId":19564,"journal":{"name":"Optical Materials","volume":"157 ","pages":"Article 116262"},"PeriodicalIF":3.8,"publicationDate":"2024-10-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142432389","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}

引用次数: 0