Optical Materials: X最新文献_第6页

Optically stimulated luminescence of alexandrite 变石的光激发发光

Optical Materials: X Pub Date : 2024-05-01 DOI: 10.1016/j.omx.2024.100325

Matheus C.S. Nunes , Neilo M. Trindade , Elisabeth M. Yoshimura , Makaiko L. Chithambo

引用次数: 0

Influence of the synthesis method on structural, morphological and electronic properties of MAPbI3 thin films prepared by three different routes 合成方法对三种不同路线制备的 MAPbI3 薄膜的结构、形态和电子特性的影响

Optical Materials: X Pub Date : 2024-05-01 DOI: 10.1016/j.omx.2024.100331

G. Gordillo , O.G. Torres , C. Alvarez , J.I. Clavijo

{"title":"Influence of the synthesis method on structural, morphological and electronic properties of MAPbI3 thin films prepared by three different routes","authors":"G. Gordillo , O.G. Torres , C. Alvarez , J.I. Clavijo","doi":"10.1016/j.omx.2024.100331","DOIUrl":"https://doi.org/10.1016/j.omx.2024.100331","url":null,"abstract":"<div>The influence of the synthesis method on both microstructure and morphological and electronic properties of CH3NH3PbI3 (MAPbI3) films prepared by different methods were investigated experimentally by Urbach energy and scanning electron microscopy (SEM) measurements, as well as computationally by Density Functional Theory (DFT) calculations.This study was performed with samples prepared by three different methods including one step anti-solvent assisted spin coating and two-steps new approach that use a route in which in a first step a layer of the inorganic precursor (PbI2) is deposited by conventional thermal evaporation and then in a second step the MAPbI3 compound is formed through a reaction of the PbI2 layer deposited in the first stage and a layer of the organic precursor methylammonium iodide (MAI) deposited by close spaced sublimation (CSS) and also by dipping in a MAI solution.</div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"22 ","pages":"Article 100331"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000433/pdfft?md5=02625b92f7a25e476af5bb1346de4be6&pid=1-s2.0-S2590147824000433-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141325228","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Eu3+-doped manganese tungstate for multiparametric and colorimetric luminescence thermometry 用于多参数和比色发光测温的 Eu3+ 掺杂钨酸锰

Optical Materials: X Pub Date : 2024-05-01 DOI: 10.1016/j.omx.2024.100320

Júlia C. Peixoto , Rafael V. Perrella , Paulo C. de Sousa Filho , Henrique S. Oliveira , Kisla P.F. Siqueira

{"title":"Eu3+-doped manganese tungstate for multiparametric and colorimetric luminescence thermometry","authors":"Júlia C. Peixoto , Rafael V. Perrella , Paulo C. de Sousa Filho , Henrique S. Oliveira , Kisla P.F. Siqueira","doi":"10.1016/j.omx.2024.100320","DOIUrl":"10.1016/j.omx.2024.100320","url":null,"abstract":"<div>Improvement of luminescent thermometers requires not only the search for high-sensitivity thermometric outputs, but also availability of multiple thermometric parameters affording a combined and reliable response. We hereby detail for the first time the luminescence of Eu3+ in manganese tungstate (Eu3+:MnWO4) solids obtained by coprecipitation under ultraviolet excitation and how this material provided an optical thermometric response from 77 K to 373 K via excitation and emission spectra. Processing of up to five thermometric parameters, namely bandwidths, band positions, band shifts and luminescence intensity ratios, resulted in relative thermal sensitivities as high as 1.56% K−1 and temperature uncertainties between 0.01 and 2 K depending on the choice of the spectral parameter. In addition, we demonstrate that Eu3+:MnWO4 also act as a qualitative colorimetric thermosensor because of progressive change of emission color to greenish-yellow to bluish-green upon heating under UV excitation. Therefore, our results show that the combination of broadband tungstate emissions with the 4f-4f narrow emissions of Eu3+ is an effective approach to achieve a multiparametric luminescent thermal response via emission, excitation and visual observation, which makes Eu3+:MnWO4 a promising candidate for advanced thermometry applications.</div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"22 ","pages":"Article 100320"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000329/pdfft?md5=a7f9ae317f65dcc1fbc3c4d4ffe39e7a&pid=1-s2.0-S2590147824000329-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140782663","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Composite color converters based on the Ca3Sc2Si3O12:Ce single crystalline films 基于 Ca3Sc2Si3O12:Ce 单晶膜的复合色彩转换器

Optical Materials: X Pub Date : 2024-05-01 DOI: 10.1016/j.omx.2024.100328

A. Shakhno , S. Witkiewicz-Łukaszek , V. Gorbenko , T. Zorenko , Yu. Zorenko

{"title":"Composite color converters based on the Ca3Sc2Si3O12:Ce single crystalline films","authors":"A. Shakhno , S. Witkiewicz-Łukaszek , V. Gorbenko , T. Zorenko , Yu. Zorenko","doi":"10.1016/j.omx.2024.100328","DOIUrl":"https://doi.org/10.1016/j.omx.2024.100328","url":null,"abstract":"<div>The study is dedicated to investigation of the structural, luminescent and photoconversion properties of epitaxial converters based on the single crystalline films of Ce3+ doped Ca3Sc2Si3O12 (CSSG:Ce) garnet. These SCFs with different thicknesses were grown using the liquid phase epitaxy method onto: (i) undoped Gd3Ga2.5Al2.5O12 (GAGG (2.5)) substrates; (ii) Ce3+ doped Gd3Ga2.5Al2.5O12 (GAGG:Ce (2.5) and Gd3Ga3Al2O12 (GAGG:Ce (3) substrates. For the first time, we have examined the phosphor conversion properties of the mentioned film and film-crystal converters under the excitation of a blue LED. We have established a trend line in the color coordinate diagram by systematically varying the film thickness in the 2–30 μm, 17–22 μm and 7–22 μm ranges for CSSG:Ce film/GAGG (2.5) crystal, CSSG:Ce film/GAGG:Ce (2.5) crystal and CSSG:Ce film/GAGG:Ce (3) crystal composite converters, respectively.</div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"22 ","pages":"Article 100328"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000408/pdfft?md5=b746e36dc4b25e37b9fab40a40509a49&pid=1-s2.0-S2590147824000408-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141249421","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Optical, electrical, and sensing properties of titanium dioxide film 二氧化钛薄膜的光学、电学和传感特性

Optical Materials: X Pub Date : 2024-05-01 DOI: 10.1016/j.omx.2024.100324

Ankit Kumar Vishwakarma , Ashok Kumar Mishra , Lallan Yadava

引用次数: 0

The nephelauxetic function he: A tool to locate the emission of Mn4+ in oxides and fluorides 他的浊度函数定位氧化物和氟化物中 Mn4+ 发射的工具

Optical Materials: X Pub Date : 2024-05-01 DOI: 10.1016/j.omx.2024.100310

Philippe Boutinaud

引用次数: 0

Temperature behavior of Ce3+ emission in (Lu,Y)2SiO5 single crystals excited by vacuum ultraviolet synchrotron light 真空紫外同步辐射光激发 (Lu,Y)2SiO5 单晶中 Ce3+ 发射的温度特性

Optical Materials: X Pub Date : 2024-05-01 DOI: 10.1016/j.omx.2024.100322

V. Pankratova , K. Chernenko , A.I. Popov , V. Pankratov

引用次数: 0

Improving interpretations of imperfections in insulating materials for current technologies 改进对绝缘材料缺陷的解释，促进当前技术的发展

Optical Materials: X Pub Date : 2024-05-01 DOI: 10.1016/j.omx.2024.100327

Peter D. Townsend , Yafang Wang

{"title":"Improving interpretations of imperfections in insulating materials for current technologies","authors":"Peter D. Townsend , Yafang Wang","doi":"10.1016/j.omx.2024.100327","DOIUrl":"10.1016/j.omx.2024.100327","url":null,"abstract":"<div>Academic studies of imperfections in insulating crystals and glasses initially assumed the sites were simple and isolated. In part this was the result of the original simplistic characterisation and modelling. Unfortunately many textbooks, teaching and publications engrained this viewpoint. More detailed techniques invariably showed those ideas to be incorrect, with numerous examples of extremely long range interactions, multi-sites packages, and even phase separations or nanoparticle inclusions. Despite these examples, current defect models still often focus on extremely localised sites. This seems particularly inappropriate, as in many modern applications the materials are heavily doped, and in a powder format. It therefore seems essential to include, or reintroduce, analysis techniques which can reveal both the long range effects, and the variations that exist as a function of powder size and method of production. Where such data exist, they reveal considerable complexity. This overview thus comments on past and future analysis techniques with the sensitivity to enhance detailed models. Site models require, and will benefit from, a wider acceptance of medium and long range interactions. Realistically, many sites exist simultaneously, so models will never be perfect, but improved characterisation can assist not only the science, but also commercial developments. Inevitably there are self citations as we have actively exploited a range of techniques that can reveal evidence of long range defect production and sensitivity to extended lattice perturbations.</div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"22 ","pages":"Article 100327"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000391/pdfft?md5=27ba0b291556c07c42746aea9b0feb66&pid=1-s2.0-S2590147824000391-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141043653","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Spectroscopic and microscopic evidence of 2D boron nitride nanoflake interaction with doxorubicin 二维氮化硼纳米片与多柔比星相互作用的光谱和显微证据

Optical Materials: X Pub Date : 2024-05-01 DOI: 10.1016/j.omx.2024.100323

Olena Gnatyuk , Galyna Dovbeshko , Andrej Dementjev , Katsiaryna Chernyakova , Oleg Posudievsky , Igor Kupchak , Denys Kolesnyk , Galyna Solyanik , Renata Karpicz

{"title":"Spectroscopic and microscopic evidence of 2D boron nitride nanoflake interaction with doxorubicin","authors":"Olena Gnatyuk , Galyna Dovbeshko , Andrej Dementjev , Katsiaryna Chernyakova , Oleg Posudievsky , Igor Kupchak , Denys Kolesnyk , Galyna Solyanik , Renata Karpicz","doi":"10.1016/j.omx.2024.100323","DOIUrl":"https://doi.org/10.1016/j.omx.2024.100323","url":null,"abstract":"<div>Doxorubicin (DOX) interaction with 2D boron nitride (BN) nanoparticles was studied experimentally and theoretically. The BN nanoparticles, namely nanoflakes, were obtained by direct liquid-phase exfoliation via preliminary stratification in a planetary ball mill from massive hexagonal BN. 2D BN nanoparticles and DOX/BN composites were characterized using visible steady-state, time-resolved fluorescence, FTIR and Raman spectroscopy, Coherent Anti-Stokes Raman Scattering (CARS) microscopy and density functional theory (DFT). The BN nanoflakes from 2 to 3 layers up to hundred nm in lateral direction possessed crystalline properties that formed the DOX/BN composites with fluorescence in the range of 520–750 nm that can be used in DOX detecting. The calculations revealed a notable electron transfer between the BN monolayer and the DOX molecule, which, however, is partly offset by the redistribution of charge within the monolayer. The energy of interaction of the BN with DOX was estimated as 1.96 eV, indicating that the DOX/BN composite formation is an exothermic process. The Fluorescence quenching of DOX/BN occurs with increased BN nanoparticle concentration. The optimal concentration for composite formation was chosen. In CARS imaging of the Lewis lung carcinoma cells after treatment with DOX/BN, brightly luminous points are observed inside the cells, indicating the accumulation of DOX/BN composites that can be used in bioimaging and theranostics.</div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"22 ","pages":"Article 100323"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000354/pdfft?md5=5e50bbcd31ce272aa6ecb14a75aae9df&pid=1-s2.0-S2590147824000354-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140843738","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of transparent conductive layers on the functionality of liquid crystal devices: Comparison of AZO, FTO and ITO 透明导电层对液晶器件功能的影响：AZO、FTO 和 ITO 的比较

Optical Materials: X Pub Date : 2024-05-01 DOI: 10.1016/j.omx.2024.100330

Vera Marinova , Stefan Petrov , Dimitrina Petrova , Blagovest Napoleonov , Nguyen Hong Minh Chau , Yu Pin Lan , Velichka Strijkova , Ken Yuh Hsu , Dimitre Dimitrov , Shiuan Huei Lin

{"title":"Effect of transparent conductive layers on the functionality of liquid crystal devices: Comparison of AZO, FTO and ITO","authors":"Vera Marinova , Stefan Petrov , Dimitrina Petrova , Blagovest Napoleonov , Nguyen Hong Minh Chau , Yu Pin Lan , Velichka Strijkova , Ken Yuh Hsu , Dimitre Dimitrov , Shiuan Huei Lin","doi":"10.1016/j.omx.2024.100330","DOIUrl":"10.1016/j.omx.2024.100330","url":null,"abstract":"<div>The integration of highly transparent and highly conductive layers plays a crucial role in the advancement of various next-generation optoelectronic technologies. Here, we demonstrate a comparison of optical, electrical and wettability properties of Aluminum-doped Zinc Oxide (AZO) deposited by Atomic Layer Deposition Technique (ALD) with commercially available Fluorine-doped Tin Oxide (FTO) and Indium-doped Tin Oxide (ITO) Transparent Conductive Oxide (TCO) layers. Their impact on the electro-optical modulation behavior when applied in Liquid Crystal (LC) device assemblies are compared and discussed. The AZO layers performance prove that are fully competitive to the commercial FTO and ITO layers and verify the high demand for the next generation indium tin oxide (ITO)-free technology.</div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"22 ","pages":"Article 100330"},"PeriodicalIF":0.0,"publicationDate":"2024-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000421/pdfft?md5=b4cb7020a3cd4aed3aed23e85ea5eee5&pid=1-s2.0-S2590147824000421-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141277463","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0