Optical Materials: X最新文献_第3页

Thin film deposition of organic-inorganic quinoline-tin dioxide p-n junction for optoelectronic devices 用于光电设备的有机-无机喹啉-二氧化锡 p-n 结的薄膜沉积

Optical Materials: X Pub Date : 2024-09-19 DOI: 10.1016/j.omx.2024.100361

Lucas P. Fonseca , Natália C. Oliveira , Lucas M. Martins , Luis V.A. Scalvi

{"title":"Thin film deposition of organic-inorganic quinoline-tin dioxide p-n junction for optoelectronic devices","authors":"Lucas P. Fonseca , Natália C. Oliveira , Lucas M. Martins , Luis V.A. Scalvi","doi":"10.1016/j.omx.2024.100361","DOIUrl":"10.1016/j.omx.2024.100361","url":null,"abstract":"<div>Tin dioxide (SnO2) is an oxide semiconductor with n-type characteristics, with high transparency in the UV–Vis, where the donors are usually associated with oxygen vacancies and interstitial tin ions. Quinoline derivatives (QD) are usually p-type semiconductors with emission in the blue range. We report photo-induced properties of the QD 4-(6-(diethylamino)-4-phenylquinolin-2-yl)benzoic acid and the combination with the inorganic semiconductor oxide SnO2, both layers in the form of thin film, which forms a heterostructure. Thin film is a very convenient format for integration in optoelectronics. Emission of the QD takes place in blue range (470–485 nm) and depends on the solvent when in solution, being used acetone and tetrahydrofuran (THF). However, when in the form of thin film, it does not depend on the solvent. Concerning the heterostructure, it is explored under distinct device architecture: 1) combination in a transport profile perpendicular to the films (transverse contacts) leading to a rectifying behavior similar to a p-n junction, which is evidence of the p-type-like electrical behavior of the QD; 2) in parallel conduction profile, where there seems to exist some sort of interfacial phenomenon similar to a two-dimensional electron gas (2-DEG), a property that can be explored in transparent high-mobility transistors.</div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"24 ","pages":"Article 100361"},"PeriodicalIF":0.0,"publicationDate":"2024-09-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000731/pdfft?md5=31dcfd348578e4c0a89e8caf8245840f&pid=1-s2.0-S2590147824000731-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142274561","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

Assessment of polylactide as optical material 评估作为光学材料的聚乳酸

Optical Materials: X Pub Date : 2024-09-14 DOI: 10.1016/j.omx.2024.100360

Matthias Balthasar Kesting , Jörg Meyer , Gunnar Seide

{"title":"Assessment of polylactide as optical material","authors":"Matthias Balthasar Kesting , Jörg Meyer , Gunnar Seide","doi":"10.1016/j.omx.2024.100360","DOIUrl":"10.1016/j.omx.2024.100360","url":null,"abstract":"<div>Due to growing concerns considering environmental pollution, interest in bioplastics is rising. For technical applications, the respective materials have to meet high requirements. In optical applications these include transmittance, refractive index and dispersion but also dimensional stability, resistance against thermal influences and radiation induced degradation. Polylactide (PLA), a bio-based and biodegradable polymer, is already applied in high tech applications such as bioresorbable implants. The material shows favorable optical properties in its glassy state and excellent resistance against photodegradation. However, the application of PLA is hindered by its crystallization behavior. When exposed to temperatures above 55–60 °C it turns hazy. This might be avoided by hindering crystallization or tailoring crystal morphology. In this critical review, current applications of PLA are discussed and its broad use is shown. A literature search is carried out considering fully bio-based and biodegradable plastics for optical applications. The results show that currently no material is commercially available that meets all requirements set. Finally, an overview of the current state in research is provided, considering PLA-based materials with adapted crystallization behavior under the aspect of transparency. This includes use of additives, formulation of blends and material treatments. Finally, recommendations for the goal of achieving highly sustainable PLA-based optical components are given.</div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"24 ","pages":"Article 100360"},"PeriodicalIF":0.0,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S259014782400072X/pdfft?md5=564c289071e8260d58e93b008bfb9d6c&pid=1-s2.0-S259014782400072X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142274559","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

Mn2+ doped Zn2SiO4 phosphors: A threefold-mode sensing approach for optical thermometry in the visible region at 525 nm 掺杂 Mn2+ 的 Zn2SiO4 荧光粉：用于 525 纳米可见光区域光学温度测量的三重模式传感方法

Optical Materials: X Pub Date : 2024-09-14 DOI: 10.1016/j.omx.2024.100359

Nikifor Rakov , Francisco Matias , Yutao Xing , Glauco S. Maciel

{"title":"Mn2+ doped Zn2SiO4 phosphors: A threefold-mode sensing approach for optical thermometry in the visible region at 525 nm","authors":"Nikifor Rakov , Francisco Matias , Yutao Xing , Glauco S. Maciel","doi":"10.1016/j.omx.2024.100359","DOIUrl":"10.1016/j.omx.2024.100359","url":null,"abstract":"<div>Optical functional materials such as nanostructured silicates have been studied for photonics applications involving energy conversion. In this scenario, we studied Zn2SiO4:Mn2+ nanostructured powders prepared by combustion synthesis for optical thermometry based on photon downshifting. The structural analysis showed that Zn2SiO4 particles were found embedded in clustered silica nanoparticles. The photoluminescence analysis showed that the samples exhibit intense green emission (centered around 525 nm), corresponding to the electronic transition 4T1 → 6A1 of Mn2+, when exposed to a low power ultraviolet lamp (centered around 255 nm). The temperature sensing performance of this material was evaluated using three different methodologies, i.e. the luminescence decay time constant, the spectral full width at half maximum, and the luminescence peak intensity from the 4T1 → 6A1 radiative transition. The thermometric analysis based on luminescence peak intensity provided a maximum relative sensitivity of ∼4.9x10−3 K−1 at 498 K, while the decay lifetime and the spectral width at half maximum provided maximum relative temperature sensitivities of ∼2.9x10−3 K−1 at 523 K and ∼1.7x10−3 K−1 at 298 K, respectively.</div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"24 ","pages":"Article 100359"},"PeriodicalIF":0.0,"publicationDate":"2024-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000718/pdfft?md5=02e3cd9e5163c2fbde5ab8025099e08c&pid=1-s2.0-S2590147824000718-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142238228","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

Upconversion luminescence of pyrochlore structured (A2B2O7) phosphors 热绿结构（A2B2O7）荧光粉的上转换发光特性

Optical Materials: X Pub Date : 2024-09-12 DOI: 10.1016/j.omx.2024.100355

B.V. Naveen Kumar , H.C. Swart , R.E. Kroon

{"title":"Upconversion luminescence of pyrochlore structured (A2B2O7) phosphors","authors":"B.V. Naveen Kumar , H.C. Swart , R.E. Kroon","doi":"10.1016/j.omx.2024.100355","DOIUrl":"10.1016/j.omx.2024.100355","url":null,"abstract":"<div>The pyrochlore-structured (A2B2O7) compounds have emerged as a focal point in contemporary research and materials science, captivating attention for their intriguing properties such as photoluminescence, superconductivity, ionic mobility, and potential applications in high-temperature barrier coatings. Their potential application in up- or down-conversion photoluminescence further positions them for integration into a myriad of optoelectronic and sensing devices. Building on extensive prior research, this review delves into the upconversion (UC) luminescence properties of numerous pyrochlore-structured host materials (titanates, zirconates, hafnates, and ytterbium pyrochlores), specifically those doped with rare earth ions. While these materials may share similar chemical and structural characteristics, their luminescent capabilities exhibit significant variation upon rare earth ion doping. The phase transitions of various pyrochlore-structured compounds with respect to cation ratio, the relationship between crystal structure, doping concentrations, and UC luminescent properties in pyrochlore-structured compounds are summarized in detail. Through controlled doping strategies and structural adjustments, researchers have been able to tailor the luminescence properties of pyrochlore structured compounds to meet specific application requirements. The intricate exploration of the UC luminescence properties of pyrochlore-structured compounds, especially when doped with rare earth ions, showcases the rich potential for these materials in a wide array of applications across various fields, from advanced sensing technologies to innovative optoelectronic devices, paving the way for exciting advancements in materials science and beyond.</div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"24 ","pages":"Article 100355"},"PeriodicalIF":0.0,"publicationDate":"2024-09-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000676/pdfft?md5=d306776b4ced6aa08042b9934bfcaf1f&pid=1-s2.0-S2590147824000676-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142238227","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

Investigation of the optical and electrical properties of zinc oxide by terahertz time domain ellipsometry 利用太赫兹时域椭偏仪研究氧化锌的光学和电学特性

Optical Materials: X Pub Date : 2024-09-12 DOI: 10.1016/j.omx.2024.100352

Zixi Zhao , Verdad C. Agulto , Toshiyuki Iwamoto , Kosaku Kato , Kohei Yamanoi , Toshihiko Shimizu , Nobuhiko Sarukura , Takashi Fujii , Tsuguo Fukuda , Masashi Yoshimura , Makoto Nakajima

引用次数: 0

A review of the optically and thermally stimulated luminescence properties of aluminosilicates 铝硅酸盐的光学和热激发发光特性综述

Optical Materials: X Pub Date : 2024-09-12 DOI: 10.1016/j.omx.2024.100351

S.W.S. McKeever

引用次数: 0

Electrophysical and thermoelectric properties and crystal structure of the formed Mn4Si7 thin vacuum coatings 已形成的 Mn4Si7 真空薄涂层的电物理特性、热电性能和晶体结构

Optical Materials: X Pub Date : 2024-09-11 DOI: 10.1016/j.omx.2024.100353

B.D. Igamov , G.T. Imanova , V.V. Loboda , V.V. Zhurikhina , I.R. Bekpulatov , A.I. Kamardin

引用次数: 0

Energy transfer processes in LuAG:Ce and LuAG:Ce, Pr single crystalline film scintillators LuAG:Ce 和 LuAG:Ce、Pr 单晶膜闪烁体中的能量传递过程

Optical Materials: X Pub Date : 2024-09-11 DOI: 10.1016/j.omx.2024.100350

A. Majewski-Napierkowski , V. Gorbenko , S. Witkiewicz-Łukaszek , T. Zorenko , Ya Zhydachevskyy , Yu Zorenko

{"title":"Energy transfer processes in LuAG:Ce and LuAG:Ce, Pr single crystalline film scintillators","authors":"A. Majewski-Napierkowski , V. Gorbenko , S. Witkiewicz-Łukaszek , T. Zorenko , Ya Zhydachevskyy , Yu Zorenko","doi":"10.1016/j.omx.2024.100350","DOIUrl":"10.1016/j.omx.2024.100350","url":null,"abstract":"<div>This work is devoted to examining the influence of energy transfer processes between Ce3+ and Pr3+ ions on the luminescent and scintillation properties of LuAG:Ce and LuAG:Ce,Pr scintillators, grown by liquid phase epitaxy onto undoped LuAG substrates with a PbO–B2O3-based flux. To characterize them, measurements of the absorption, cathodoluminescence, photoluminescence emission and excitation spectra as well as the photoluminescence decay kinetics of the SCFs under study were performed. The investigation confirmed simultaneous energy transfer processes between d-f and f-f states of Pr3+ ions and between Pr3+ (d-f) and Ce3+ (d-f) ions, as well as from Ce3+ (d-f) to Pr3+ (f-f) ions in LuAG host. Furthermore, the energy transfer from Pb2+ flux-related impurity to Ce3+ (d-f) and Pr3+ (f-f) ions also were found in the LuAG:Ce and LuAG:Ce,Pr SCFs. An energy diagram of the Pb2+, Pr3+ and Ce3+ ion levels was constructed, which provides a deeper overview of the mentioned energy transfer processes.</div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"24 ","pages":"Article 100350"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000627/pdfft?md5=e9d2f3365d3f3e4f99d47380622fa639&pid=1-s2.0-S2590147824000627-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142229229","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

Theoretical and experimental study of plasmon oscillation dispersion in Si and Ge crystals 硅晶体和 Ge 晶体等离子振荡频散的理论和实验研究

Optical Materials: X Pub Date : 2024-09-11 DOI: 10.1016/j.omx.2024.100354

Z.A. Isakhanov , B.E. Umirzakov , G.T. Imanova

{"title":"Theoretical and experimental study of plasmon oscillation dispersion in Si and Ge crystals","authors":"Z.A. Isakhanov , B.E. Umirzakov , G.T. Imanova","doi":"10.1016/j.omx.2024.100354","DOIUrl":"10.1016/j.omx.2024.100354","url":null,"abstract":"<div>Plasma fluctuation dispersion has been theoretically and experimentally studied in monocrystal samples of Si (111) and Ge (111). It has been shown that the dispersion depends on crystallographic orientations of materials under study. In this work, the dispersion effects in the CLEE spectra, which manifest themselves in bulk samples of Si and Ge, have been studied. The loss energy electron was studied by the CLEE method upon their reflection from Si(111) and Ge(111) at different angles of incidence of the electron beam on the surface. Calculation of the total electron energy loss with formula (5) shows that the form of the CLEE spectrum of primary electrons depends on the nature and magnitude of the electron density in a given direction and is in satisfactory agreement with the experimental data. Thus, the theoretical and experimental results show that in the case of single-crystalline Si and Ge, with increasing k, the values of the bulk plasma oscillation increase by 2–3 eV.</div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"24 ","pages":"Article 100354"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000664/pdfft?md5=61097cb00323e74efe17c0ec1368ac39&pid=1-s2.0-S2590147824000664-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142232163","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

Energy transfer processes leading to strong NIR-to-red upconversion in the Yb-concentrated Sr3Yb0.98Er0.02(PO4)3 eulytite 导致镱富集的 Sr3Yb0.98Er0.02(PO4)3 eulytite 中发生强烈的近红外-红外上转换的能量转移过程

Optical Materials: X Pub Date : 2024-09-11 DOI: 10.1016/j.omx.2024.100358

Xiaowu Hu , Fabio Piccinelli , Silvia Ruggieri , Pablo Camarero Linares , Patricia Haro , Marco Bettinelli

{"title":"Energy transfer processes leading to strong NIR-to-red upconversion in the Yb-concentrated Sr3Yb0.98Er0.02(PO4)3 eulytite","authors":"Xiaowu Hu , Fabio Piccinelli , Silvia Ruggieri , Pablo Camarero Linares , Patricia Haro , Marco Bettinelli","doi":"10.1016/j.omx.2024.100358","DOIUrl":"10.1016/j.omx.2024.100358","url":null,"abstract":"<div>The optical spectroscopy and the decay kinetics of samples with composition Sr3Yb(PO4)3, Sr3Y0.98Yb0.02(PO4)3, Sr3Y0.98Er0.02(PO4)3 and Sr3Yb0.98Er0.02(PO4)3 have been studied at room temperature. The presence of efficient energy transfer and migration processes has been clearly evidenced in the Sr3Yb(PO4)3 and Sr3Yb0.98Er0.02(PO4)3 materials, giving rise to strong visible upconversion upon excitation in the spectral region around 1 μm in the latter material. The strong anti-Stokes emission is connected to fast migration in the 2F5/2 level of Yb3+, due to the inefficient concentration quenching for this ion. In this class of materials, the upconversion processes could be optimized even in the presence of high concentrations of the Yb3+ sensitizer.</div>","PeriodicalId":52192,"journal":{"name":"Optical Materials: X","volume":"24 ","pages":"Article 100358"},"PeriodicalIF":0.0,"publicationDate":"2024-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S2590147824000706/pdfft?md5=0ac6e7c411764cff7996f7b7f673be53&pid=1-s2.0-S2590147824000706-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142173399","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