Article
Chemistry, Applied
M. Seshadri, M. J. V. Bell, V. Anjos, Y. Messaddeq
Summary: This work focuses on the structural and spectroscopic properties of Yb3+ doped and Pr3+/Yb3+ co-doped tellurite glasses. The Raman and FT-IR spectra were used to analyze the bending and stretching modes of TeO2 and Te-OH bonds. Energy bands and radiative transitions of Yb3+ and Pr3+ ions were assigned based on absorption measurements and theoretical models.
JOURNAL OF RARE EARTHS
(2021)
Article
Materials Science, Multidisciplinary
N. B. Aranda, R. F. Muniz, M. L. Baesso, A. C. Bento, H. M. S. Deroide, A. N. Medina, L. A. O. Nunes, J. R. Silva, S. M. Lima, L. H. C. Andrade, J. H. Rohling
Summary: Yb-Ce co-doped LSCAS glasses melted under a vacuum atmosphere exhibit down-conversion luminescence suitable for solar cell application due to the absence of OH- radicals. The absorption spectra show a broad ultraviolet-visible band associated with the 2F5/2, 2F7/2-+ 5d transitions of Ce3+. Time-resolved luminescence confirms energy transfer from Ce3+ to Yb3+, and contour maps spectra reveal a decrease in Ce3+ emission with increasing Yb concentration. Thermal lens results indicate an increase in heat generation and suggest the occurrence of nonradiative transitions involving Yb2+ or Ce4+ ions.
Article
Materials Science, Ceramics
Zhencai Li, Dacheng Zhou, Lars R. Jensen, Jianbei Qiu, Yanfei Zhang, Yuanzheng Yue
Summary: A transparent Er3+-Yb3+-doped fluoro-aluminosilicate glass-ceramic was prepared, with BaYF5 nanocrystals uniformly distributed in the glass matrix. Heat treatment increased the crystallinity, doubled the intensity of up-conversion luminescence, and enhanced temperature-sensing capability.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Jose Henrique Faleiro, Noelio O. Dantas, Anielle C. A. Silva, Helliomar P. Barbosa, Bruno H. S. T. da Silva, Karmel de O. Lima, Rogeria Rocha Goncalves, Jefferson Luis Ferrari
Summary: This study reports on the preparation and photoluminescence properties of phosphate glass matrix doped with Yb3+, Eu3+ and Er3+ with different amount of Nb2O5. It was observed that the Nb2O5 content does not influence the photo-luminescent properties of the Eu3+ ion, suggesting potential applications in energy conversion.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Multidisciplinary
H. Benrejeb, K. Soler-Carracedo, S. Hraiech, I. R. Martin
Summary: The energy transfer mechanism between Pr3+ and Yb3+ ions in co-doped phosphate glasses was investigated, and its impact on the emission intensity was analyzed.
Article
Materials Science, Multidisciplinary
Xiaoxue Ma, Yukun Chen, Yi Liu, Xing Zhang, Shengwei Chi, Taiyu Jin, Haishuo Wu, Dawei Fang, Jun Wang
Summary: A study on a light-conversion glass doped with rare-earth ions was conducted to improve the light utilization and lifespan of silicon solar cells. Experimental results showed that this glass can increase the relative efficiency of silicon solar cells, demonstrating its important role in enhancing energy efficiency.
Article
Materials Science, Ceramics
Chengzhen Liu, Shaohua Feng, Xusheng Xiao, Yantao Xu, Haitao Guo
Summary: Yb3+/Er3+/Ho3+ tridoped tellurite glass exhibits strong mid-infrared emission at 2.85 μm under excitation, with high energy transfer efficiency, showing potential for applications in 3 μm fiber lasers.
CERAMICS INTERNATIONAL
(2022)
Article
Chemistry, Multidisciplinary
Guanxin Du, Shaofei Wen, Junjie Zhao, Peng Ran, Dazhao Wang, Lei Wei, Xvsheng Qiao, Yang Yang, Jianrong Qiu, Shifeng Zhou
Summary: A mild strategy for constructing dual-phase optical ceramics with high crystallinity based on the stepped dual-phase crystallization of hybridized aluminosilicate glass is presented. Transparent ceramics with various chemical compositions and phase combinations can be prepared using this method, and the shape of the ceramic fibers can be easily adjusted. The practical applications of optical ceramics for lighting and X-ray imaging are demonstrated, indicating the potential of this research.
ADVANCED MATERIALS
(2023)
Article
Materials Science, Ceramics
Carly Mathewson, Isabella Urbina, John V. Badding, Venkatraman Gopalan, John C. Mauro
Summary: Novel potassium-calcium-aluminosilicate glasses have been developed as cladding material for a doped ZnSe core infrared fiber laser, showing high glass transition temperatures and thermal expansion coefficients. Successful application of these glasses as cladding for a ZnSe tunable fiber laser has been demonstrated.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2021)
Article
Materials Science, Ceramics
Leben Liang, Zhifeng Mo, Biao Ju, Changming Xia, Zhiyun Hou, Guiyao Zhou
Summary: Yb3+/Pr3+ co-doped lanthanum aluminum silicate glasses demonstrate intense absorption and emission properties within specific wavelength ranges, making them suitable for applications in visible laser and near-infrared broadband fiber amplifiers.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2021)
Article
Materials Science, Multidisciplinary
Saisudha B. Mallur, Panakkattu K. Babu
Summary: Adding TeO2 and growing CdSe nanoparticles in bismuth borate glasses can significantly impact the optical properties of Pr3+ ions, with CdSe nanoparticles decreasing the covalency of the Pr-O bond. The optical band gap decreases significantly in the presence of nanoparticles, while the blue transition of Pr3+ is enhanced when CdSe nanoparticles are present. Additionally, high-quality light emissions and spectroscopic quality factors are observed in the glass samples doped with Pr3+ ions compared to similar systems.
MATERIALS RESEARCH BULLETIN
(2022)
Article
Multidisciplinary Sciences
S. M. Taqiullah, Thamraa Alshahrani, Mohammad Shariq, Jabir Hakami, Nafis Ahmad, A. M. Alshehri, Anis Ahmad Chaudhary, M. Shakir Khan, Sangram M. Shinde, Y. Slimani, Akhalakur Rahman Ansari, Mohd Asim Siddiqui, Mohd Imran, Firoz Khan
Summary: The melt quenching technique was used to prepare a series of glass samples with different compositions, and the structural characteristics of the glass were studied using infrared and Raman spectroscopy. Specific modes of vibration and peak positions were identified from the analysis of the spectra, providing further insights into the structure of the glass.
JOURNAL OF TAIBAH UNIVERSITY FOR SCIENCE
(2022)
Article
Engineering, Electrical & Electronic
Wuyunga Bao, Xinmin Yu, Tong Wang, Qianwen Wang, Hongbo Zhang, Chunhui Su
Summary: La2O3-B2O3-SrO glass ceramics doped with Tb3+/Eu3+ were prepared and their luminescence performance was investigated. The heat treatment conditions of the glass ceramics were determined by various analytical techniques. The emission peaks of Tb3+ and Eu3+ were obtained under a specific excitation wavelength, and tunable warm white light emission was achieved by adjusting the concentration of Eu3+. The Tb3+/Eu3+ co-doped glass ceramics exhibited high thermal stability and luminescence properties, making them suitable for white LEDs and display devices.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Optics
Yanqing Fu, Chengkang Li, Liu Yang, Gangjie Zhou, Changgui Lin, Shiliang Kang
Summary: In this study, enhanced mid-infrared (MIR) emission was achieved in Pr3+-doped chalcogenide glass ceramics (ChGCs). By controlling the heat treatment process, biphasic-phase nanocrystals were successfully precipitated in the glass host, leading to a significant increase in the emission intensity. The obtained ChGC exhibited large stimulated emission cross sections, making it a promising candidate for MIR laser applications.
JOURNAL OF LUMINESCENCE
(2022)
Article
Materials Science, Ceramics
Zhuoyuan Huang, Jiahao Yang, Zhifeng Mo, Jiaao Lu, Changming Xia, Zhiyun Hou, Guiyao Zhou
Summary: In this study, Er3+-Pr3+-Yb3+ tri-doped lanthanum aluminium silicate glasses were successfully prepared and their emission properties under different excitations were investigated. Intense emission bands were observed in the visible and near-infrared ranges. The role of Yb3+ in enhancing the absorption and emission of this system was demonstrated.
JOURNAL OF NON-CRYSTALLINE SOLIDS
(2022)
Article
Materials Science, Multidisciplinary
Jan Schroeder, Aaron Reupert, Lothar Wondraczek
Summary: This study presents a simple technique to enhance the photoluminescence of europium(III) using silver clusters in sol-gel coatings. Under certain excitation conditions, a significant enhancement in emission is observed, with silver clusters showing broader excitation range and stronger amplification compared to metallic nanoparticles.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Optics
Linling Tan, Yanqing Fu, Shiliang Kang, Lothar Wondraczek, Changgui Lin, Yuanzheng Yue
Summary: A Te cluster-doped borate glass with ultra-broadband near-infrared emission under blue light excitation is reported. Topochemical tailoring of the near-infrared photoemission characteristics in such materials can be achieved through adjustments of glass chemistry and processing condition. This research is of great significance in the fields of smart lighting sources and biomedical spectroscopy.
PHOTONICS RESEARCH
(2022)
Editorial Material
Physics, Multidisciplinary
Lothar Wondraczek
Summary: Two-dimensional model glasses exhibit low-frequency vibrational density of states related to the quasilocalized dynamics of string-like objects, providing an explanation for the universal boson peak feature in glasses.
Article
Materials Science, Multidisciplinary
J. I. A. N. G. K. U. N. Cao, Y. I. C. O. N. G. Ding, R. O. M. A. N. Sajzew, M. I. N. G. H. U. I. Sun, F. A. L. K. O. Langenhorst, L. O. T. H. A. R. Wondraczek
Summary: This study demonstrates the mechanoluminescence of highly transparent glass ceramics containing a high-volume fraction of Cr3+-doped ZnGa2O4 crystals. These crystals can emit light in the transmission window of aqueous media or biological tissue, enabling in situ stress level monitoring and biophysical imaging.
OPTICAL MATERIALS EXPRESS
(2022)
Article
Chemistry, Multidisciplinary
Yicong Ding, Byoungjin So, Jiangkun Cao, Lothar Wondraczek
Summary: The ultrasound-induced mechanoluminescence (USML) of Erbium-doped CaZnOS is reported in this study. The fluorescence intensity ratio of Er3+'s transitions allows for simultaneous temperature mapping with high sensitivity. The combination of USML, local heating, and remote read-out enables highly controlled stimulation with independent control of light emission and ultrasonic heating.
Article
Materials Science, Ceramics
Yang Xia, Courtney Calahoo, Bruno Poletto Rodrigues, Kristin Griebenow, Lennart Graewe, Lothar Wondraczek
Summary: We investigate the properties and structure of cerium pyrophosphate glasses and partially substituted cerium silicophosphates. The majority of cerium in these glasses is in the Ce(III) state. A combination of dynamic nuclear magnetic resonance and electrical impedance spectroscopy is utilized to determine the cerium speciation. Optical spectroscopy is limited in quantifying the ratio of Ce(III)/Ce(IV), but the effects of silica-for-cerium substitution on optical extinction and the UV band gap provide supporting evidence from vibrational spectroscopy. The stabilization of Ce(IV) by silica bonding to phosphate units restricts polaron transport, resulting in higher polaron activation energy and lower electronic conductivity. Meanwhile, Ce(III) is stabilized by coordinating to P = O.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Chemistry, Multidisciplinary
Bahram Hosseini Monjezi, Salih Okur, Rene Limbach, Abhinav Chandresh, Kaushik Sen, Tawheed Hashem, Matthias Schwotzer, Lothar Wondraczek, Christof Woell, Alexander Knebel
Summary: The fabrication of metal-organic framework (MOF) thin films is essential for integrating these materials into electronic and optical devices. However, the limited structural variety of MOF thin films prepared through layer-by-layer deposition has been a challenge. In this study, a fast method for the preparation of MIL SURMOF on Au-surfaces was developed, allowing for the deposition of adjustable thickness thin films within 60 minutes. The resulting MIL-68(In) thin films showed high optical quality and mechanical properties, making them suitable for use as optical read-out sensors.
Article
Materials Science, Ceramics
Brian Topper, Nagia. S. S. Tagiara, Dimitrios Palles, Felix Lind, Mourad Baazouzi, Mohamed Toufik Soltani, Lothar Wondraczek, Doris Moncke, Efstratios. I. I. Kamitsos
Summary: Electrothermal poling effectively induces second-order nonlinear effects in heavy-metal oxide antimonite glasses. The study reveals that the poling-induced second-harmonic generation intensity is influenced by the alkali type. X-ray photoelectron spectroscopy and spectroscopy analysis confirm the presence of different molecular units in the glass network. Raman spectroscopy line scans track structural changes on the anode side of poled glasses and show an increase in partially polymerized tungstate units.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2023)
Article
Materials Science, Multidisciplinary
Yicong Ding, Byoungjin So, Jiangkun Cao, Falko Langenhorst, Lothar Wondraczek
Summary: Light emission from CaZnOS:Nd3+ is achieved through high-intensity ultrasound excitation. The degree of (local) thermo-acoustic heating can be controlled simultaneously by acoustic power and duty ratio under isothermal or nonisothermal conditions. The Nd-related photoemission provides accurate thermometric feedback within the physiological temperature range.
ADVANCED OPTICAL MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zhiwen Pan, Jan Dellith, Lothar Wondraczek
Summary: In this study, the concept of genes as fictive chemical entities with a characteristic stoichiometry is used to describe the relationships between structure and ionic conductivity in polyionic glasses. Strong linear component analysis (SLCA) is employed to optimize the selection of essential genes from all possible combinations of elements, and family trees and matrix rotation analysis are used for filtering. The structural interpretations are also compared with spectroscopic experiments for validation.
Article
Chemistry, Physical
Indrajeet Mandal, Sajid Mannan, Lothar Wondraczek, Nitya Nand Gosvami, Amarnath R. R. Allu, N. M. Anoop Krishnan
Summary: As an alternative to liquid electrolytes, all-solid-state sodium-ion batteries are receiving significant attention for their potential safety and efficiency improvements. In this study, an experimental and machine learning approach is proposed to discover glass electrolytes and gain insights into the role of different glass components. Experimental measurements and machine learning models are used to predict and understand the ionic conductivity of different glass compositions. The results show excellent agreement between the predictions and experimental measurements, demonstrating the potential of machine learning tools for accelerating the discovery of Na-ion-conducting glass electrolytes.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Physics, Multidisciplinary
Martin Tomterud, Sabrina D. Eder, Christin Buechner, Lothar Wondraczek, Ingve Simonsen, Walter Schirmacher, Joseph R. Manson, Bodil Holst
Summary: This study presents experimental evidence of a boson peak in two-dimensional silica and shows that the vibrational coupling of phonon modes produces the boson peak in two-dimensional materials at a frequency similar to that of the bulk. The boson peak has been observed in three-dimensional amorphous materials, and now it is also found in a two-dimensional material.
Article
Materials Science, Multidisciplinary
Robert Mueller, Martin Lorenz, Alexander Veber, Roman Sajzew, Andre Kalide, Jens Kobelke, Anka Schwuchow, Luukas Kuusela, Lothar Wondraczek, Laetitia Petit, Katrin Wondraczek
Summary: In this study, silicate glass containing crystals were prepared by melting a mixture of YbPO4 xenotime structured crystals and SiO2 nanoparticles. The mixture was used to prepare large volume core preforms for laser active optical fiber. The integrity of the crystals in the preform and fiber were assessed through temperature dependent sintering and fiber drawing experiments. The survival of YbPO4 crystalline particles in silica was investigated using various techniques, showing that the particles withstand the high-temperature steps during the fiber fabrication process. However, partial decomposition of the crystals was observed during the fiber fabrication.
OPTICAL MATERIALS EXPRESS
(2023)
Article
Nanoscience & Nanotechnology
Aaron Reupert, Ismael Chiamenti, Maria Chernysheva, Lothar Wondraczek
Summary: This study focuses on the lateral light scattering on fiber Bragg gratings (FBG) with the aim of creating a controllable linear light source based on optical fiber. The scattering from two FBGs was measured for various polar and azimuth angles. The observed light emission showed concentrated intensity peaks on opposite sides, which were explained using the volume current method. This research contributes to a better understanding of azimuth FBG-scattering and has potential applications in fiber light source and optical loss reduction.
Article
Optics
Yunle Wei, Jiangbo Zhao, Sindy Fuhrmann, Roman Sajzew, Lothar Wondraczek, Heike Ebendorff-Heidepriem
Summary: This study uncovers the challenges of using the traditional striking technique to create gold nanoparticles in tellurite glass and develops new approaches to control the size and concentration of these nanoparticles. The research provides guidance for designing and manipulating the plasmonic properties in tellurite glass for photonics research and applications.
LIGHT-SCIENCE & APPLICATIONS
(2023)
