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Głuchowski P. Pressure -induced changes in the persistent luminescence of Gd 2.994Ce 0.006Ga 3Al 2O 12 and Gd 2.964Ce 0.006Dy 0.03Ga 3Al 2O 12 nanoceramics. Dalton Trans 2022; 51:5524-5533. [PMID: 35297920 DOI: 10.1039/d2dt00130f] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
The Gd2.994Ce0.006Ga3Al2O12 and Gd2.964Ce0.006Dy0.03Ga3Al2O12 nanopowders were prepared using the sol-gel method. The nanocrystalline powders were used for sintering ceramics by low-temperature sintering at high pressure (LTHP). This technique allows maintaining the crystallite size or in some cases even decreases it, leading to interesting physical properties often different compared to the starting material. This study describes the structural and spectroscopic properties of the powders as well as changes in the physical properties of the ceramics induced by the sintering pressure. Particular attention was paid to study the influence of pressure applied during sintering on changes in the persistent luminescence. A mechanism for the persistent luminescence is proposed taking into account the changes induced in ceramics.
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Affiliation(s)
- P Głuchowski
- Institute of Low Temperature and Structural Research PAS, PL-50422 Wroclaw, Poland.
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Yuan L, Jin Y, Wu H, Deng K, Qu B, Chen L, Hu Y, Liu RS. Ni 2+-Doped Garnet Solid-Solution Phosphor-Converted Broadband Shortwave Infrared Light-Emitting Diodes toward Spectroscopy Application. ACS APPLIED MATERIALS & INTERFACES 2022; 14:4265-4275. [PMID: 35025207 DOI: 10.1021/acsami.1c20084] [Citation(s) in RCA: 20] [Impact Index Per Article: 10.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Broadband shortwave infrared (SWIR) light-emitting diodes (LEDs), capable of advancing the next-generation solid-state smart invisible lighting technology, have sparked tremendous interest and will launch ground-breaking spectroscopy and instrumental applications. Nevertheless, the device performance is still suppressed by the low quantum efficiency and limited emission bandwidth of the critical phosphor layer. Herein, we report a high-performance Ni2+-doped garnet solid-solution broadband SWIR emitter centered at ∼1450 nm with a large full-width at half-maximum of ∼300 nm, thereby fabricating, for the first time, a directly excited Ni2+-doped garnet solid-solution phosphor-converted broadband SWIR LED device. A synergetic enhancement strategy, adding a fluxing agent and a charge compensator simultaneously, is proposed to deliver a more than 20-fold increase of the SWIR emission intensity and nearly 2-fold improvement of the thermal quenching behavior. The site occupation and mechanism behind the synergetic enhancement strategy are elucidated by a combination of experimental study and theoretical calculation. A prototype of the SWIR LED with a radiation flux of 1.25 mW is fabricated and utilized as an invisible SWIR light source to demonstrate the SWIR spectroscopy applications. This work not only opens a window to explore novel broadband SWIR phosphors but also provides a synergetic strategy to remarkably improve the performance of artificial SWIR LED light sources.
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Affiliation(s)
- Lifang Yuan
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, WaiHuan Xi Road, no. 100, Guangzhou 510006, China
- Experimental Teaching Department, Guangdong University of Technology, WaiHuan Xi Road, no. 100, Guangzhou 510006, China
| | - Yahong Jin
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, WaiHuan Xi Road, no. 100, Guangzhou 510006, China
| | - Haoyi Wu
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, WaiHuan Xi Road, no. 100, Guangzhou 510006, China
| | - Kaiyuan Deng
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, WaiHuan Xi Road, no. 100, Guangzhou 510006, China
| | - Bingyan Qu
- School of Materials Science and Engineering, Hefei University of Technology, Tunxi Road, no. 193, Hefei 230009, China
| | - Li Chen
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, WaiHuan Xi Road, no. 100, Guangzhou 510006, China
| | - Yihua Hu
- School of Physics and Optoelectronic Engineering, Guangdong University of Technology, WaiHuan Xi Road, no. 100, Guangzhou 510006, China
| | - Ru-Shi Liu
- Department of Chemistry, National Taiwan University, Taipei 106, Taiwan
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Armetta F, Saladino ML, Giordano C, Defilippi C, Marciniak Ł, Hreniak D, Caponetti E. Non-conventional Ce:YAG nanostructures via urea complexes. Sci Rep 2019; 9:3368. [PMID: 30833596 PMCID: PMC6399219 DOI: 10.1038/s41598-019-39069-6] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Accepted: 12/15/2018] [Indexed: 01/23/2023] Open
Abstract
Ce:YAG nanostructures (Ce:YAG = Cerium in Yttrium Aluminium Garnet), easy to control and shape, have been prepared via templating approach using natural and synthetic materials (i.e. paper, cotton wool and glass wool) previously soaked with a gel-like metals precursor and then thermally treated to achieve the wished morphology. The final material, otherwise difficult to process, can be easily moulded, it is lightweight, portable and forms, at the nanoscale, homogeneous layers of interconnected but not agglomerated nanoparticles (15 ± 5 nm). Using the same synthetic route, called Urea-Glass-Route, but in absence of a template, extremely pure Ce:YAG nanoparticle (45 ± 5 nm) can be also prepared, highly crystalline and well-defined in size and shape. Both structural and optical properties of the final materials were investigated, showing high optical quality. The support allows the production of a multifunctional material with mouldable shape and potential lighting application for large structures combining the strength, chemical durability, fire resistance, and translucency of glass fibres. Last, but not least, the synthetic path also allows an easy scaling up of the process: the first, key step for practical application of nanosized rare-earth doped YAG on large scale.
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Affiliation(s)
- Francesco Armetta
- Dipartimento Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche - STEBICEF and INSTM UdR - Palermo, Università di Palermo, Parco d'Orleans II, Viale delle Scienze pad. 17, Palermo, I-90128, Italy
| | - Maria Luisa Saladino
- Dipartimento Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche - STEBICEF and INSTM UdR - Palermo, Università di Palermo, Parco d'Orleans II, Viale delle Scienze pad. 17, Palermo, I-90128, Italy.
| | - Cristina Giordano
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom. .,Stranski-Laboratorium für Physikalische und Theoretische Chemie, Institut für Chemie, Technische Universität Berlin, Straße des 17. Juni 124, Sekr. TC7, D-10623, Berlin, Germany.
| | - Chiara Defilippi
- School of Biological and Chemical Sciences, Queen Mary University of London, Mile End Road, London, E1 4NS, United Kingdom
| | - Łukasz Marciniak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okolna 2, 50-422, Wrocław, Poland
| | - Dariusz Hreniak
- Institute of Low Temperature and Structure Research, Polish Academy of Sciences, ul. Okolna 2, 50-422, Wrocław, Poland
| | - Eugenio Caponetti
- Dipartimento Scienze e Tecnologie Biologiche, Chimiche e Farmaceutiche - STEBICEF and INSTM UdR - Palermo, Università di Palermo, Parco d'Orleans II, Viale delle Scienze pad. 17, Palermo, I-90128, Italy
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Xue Z, Ma Y, Guo H. The influence of Gd doping on thermophysical properties, elasticity modulus and phase stability of garnet-type (Y1-Gd )3Al5O12 ceramics. Ann Ital Chir 2017. [DOI: 10.1016/j.jeurceramsoc.2017.05.033] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/19/2022]
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5
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Bock RM, Marin E, Rondinella A, Boschetto F, Adachi T, McEntire BJ, Bal BS, Pezzotti G. Development of a SiYAlON glaze for improved osteoconductivity of implantable medical devices. J Biomed Mater Res B Appl Biomater 2017; 106:1084-1096. [PMID: 28503805 DOI: 10.1002/jbm.b.33914] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2016] [Revised: 04/11/2017] [Accepted: 04/22/2017] [Indexed: 12/20/2022]
Abstract
The application of bioactive coatings onto orthopaedic appliances is commonly performed to compensate for the otherwise bioinert nature of medical devices and to improve their osseointegration. Calcium phosphates, hydroxyapatite (HAp), and bioglasses are commercially available for this purpose. Until recently, few other inorganic compounds have been identified with similar biofunctionality. However, silicon nitride (Si3 N4 ) has emerged as a new orthopaedic material whose unique surface chemistry also enhances osteoconductivity. Recent research has confirmed that its minority intergranular phase, consisting of silicon yttrium aluminum oxynitride (SiYAlON), is principally responsible for this improvement. As a result, it was hypothesized that SiYAlON itself might serve as an effective osteoconductive coating or glaze for medical devices. To test this hypothesis, a process inspired by traditional ceramic whiteware glazing was developed. A slurry containing ingredients similar to the intergranular SiYAlON composition was applied to a Si3 N4 surface, which was then subjected to a heat treatment to form a glaze. Various analytical tools were employed to assess its chemistry and morphology. It was found that the glaze was comprised predominately of Y5 Si3 O12 N, a compound commonly referred to as N-apatite, which is isostructural to native HAp. Subsequent exposure of the glazed surface to acellular simulated body fluid led to increased deposition of biomimetic HAp-like crystals, while exposure to Saos-2 osteosarcoma cells in vitro resulted in greater HAp deposition relative to control samples. The observation that SiYAlON exhibits enhanced osteoconductivity portends its potential as a therapeutic aid in bone and tissue repair. © 2017 Wiley Periodicals, Inc. J Biomed Mater Res Part B: Appl Biomater, 106B: 1084-1096, 2018.
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Affiliation(s)
- Ryan M Bock
- Amedica Corporation, Salt Lake City, Utah, 84119
| | - Elia Marin
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, 606-8126, Kyoto, Japan
| | - Alfredo Rondinella
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, 606-8126, Kyoto, Japan.,Department of Dental Medicine, Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji, Kamigyo-ku, 602-8566, Kyoto, Japan
| | - Francesco Boschetto
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, 606-8126, Kyoto, Japan.,Department of Dental Medicine, Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji, Kamigyo-ku, 602-8566, Kyoto, Japan
| | - Tetsuya Adachi
- Department of Dental Medicine, Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji, Kamigyo-ku, 602-8566, Kyoto, Japan.,Department of Immunology, Kyoto Prefectural University of Medicine, Kawaramachi Hirokoji, Kamigyo-ku, 602-8566, Kyoto, Japan
| | | | - B Sonny Bal
- Amedica Corporation, Salt Lake City, Utah, 84119.,Department of Orthopaedic Surgery, University of Missouri, Columbia, Missouri, 65212
| | - Giuseppe Pezzotti
- Ceramic Physics Laboratory, Kyoto Institute of Technology, Sakyo-ku, Matsugasaki, 606-8126, Kyoto, Japan
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Hosseinifard M, Badiei A, Ahmadi K. Synthesis and characterization of yttrium aluminum garnet nanostructures by cathodic electrodeposition method. ADV POWDER TECHNOL 2017. [DOI: 10.1016/j.apt.2016.10.012] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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7
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Mancic L, Lojpur V, Barosso I, Rabanal ME, Milosevic O. Synthesis of Cerium‐Activated Yttrium Aluminate Based Fine Phosphors by an Aerosol Route. Eur J Inorg Chem 2012. [DOI: 10.1002/ejic.201101053] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
- Lidija Mancic
- Institute of Technical Sciences of SASA, Knez Mihailova 35/IV, 11000 Belgrade, Serbia, Fax: +38‐1112185263
| | - Vesna Lojpur
- Institute of Technical Sciences of SASA, Knez Mihailova 35/IV, 11000 Belgrade, Serbia, Fax: +38‐1112185263
| | - Ignacio Barosso
- Department of Materials Science and Engineering and Chemical Engineering, University Carlos III of Madrid, Avd. Universidad 30, 28911 Leganes, Madrid, Spain
| | - Maria Eugenia Rabanal
- Department of Materials Science and Engineering and Chemical Engineering, University Carlos III of Madrid, Avd. Universidad 30, 28911 Leganes, Madrid, Spain
| | - Olivera Milosevic
- Institute of Technical Sciences of SASA, Knez Mihailova 35/IV, 11000 Belgrade, Serbia, Fax: +38‐1112185263
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