White light emission from Tm3+/Dy3+ co-doped oxyfluoride germanate glasses under UV light excitation

Lakshminarayana, G.; Yang, Huanghe; Qiu, Jianrong

doi:10.1016/j.jssc.2008.11.020

Cited by 135 publications

(74 citation statements)

References 23 publications

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“…An optimum codoping strategy requires an energy transfer between the involved ions, so the emission radiation of one is absorbed for the other ion to be excited to a higher level, producing more intensive emission. Recently, Lakshminarayana et al 128 . 146 The location of the energy levels of lanthanides ions by photo-and thermo-luminescence were studied in NaGdF 4 The main advantage of these works is the low vibrational energies of fluoride matrices.…”

Section: Colour Figurementioning

confidence: 99%

Nanocrystallisation in oxyfluoride systems: mechanisms of crystallisation and photonic properties

Pablos-Martín

Durán

Pascual

2012

International Materials Reviews

154

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Rare earth (RE) doped oxyfluoride glass ceramics possess interesting optical properties with applications in telecommunications and optoelectronics, such as solid state lasers, optical amplifiers, etc. These materials combine the transparency and mechanical and chemical resistance of aluminosilicate glasses with the low phonon energy and facile incorporation of RE ions in the fluoride crystals. The incorporation of RE ions in the crystalline phases enhances the laser emission intensity, a major property of these materials. Transparency is achieved when crystal size is in the nanometric scale, usually below 40 nm, which avoids light scattering. A strict control of the nucleation and crystal growth processes is therefore necessary which requires a deep knowledge of the crystallisation mechanisms. The great activity and publications in this field in the last decades merit a review providing a comparative study of the different nanoglass ceramic systems, their structural and optical characterisation and their main properties and applications. This is the objective of this review paper which includes 232 references. A general discussion on glass nucleation and crystallisation theories and more relevant crystallisation parameters and characterisation techniques are put forward in the first section of the review, focused on nanocrystallisation processes in oxyfluoride systems. In the second section, the principal RE doped glass ceramics are presented. After a general introduction about the luminescence processes, including up-and down-conversion, the behaviour of RE elements in glasses and crystals are discussed. Glass ceramic compositions have been divided as follows: glass ceramics with a glass composition following Wang and Ohwaki's oxyfluoride glass ceramic, 1 ; and glass ceramics with different matrix compositions, arranged by crystalline phases. Relevant properties, mainly optical and laser, are described in each system along with the most relevant applications of these materials.

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Section: Colour Figurementioning

confidence: 99%

Nanocrystallisation in oxyfluoride systems: mechanisms of crystallisation and photonic properties

Pablos-Martín

Durán

Pascual

2012

International Materials Reviews

154

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“…Dieser Fortschritt führte zu einem Bedarf an geeigneten Lumineszenzmaterialien (Leuchtstoffen) für die Erzeugung von weißem Licht, was normalerweise erreicht wird durch: 1) die Verwendung von drei einzelnen monochromatischen LEDs (blau, grün, rot); 2) die Kombination einer ultravioletten LED mit blauen, grünen und roten Leuchtstoffen; oder 3) die Verwendung einer blauen LED zur optischen Anregung von gelben oder grünen und roten Leuchtstoffen. [94] [178][179][180] Aluminate, [180] Sulfide [180,181] und Fluoride [182,183] [89] Man kennt heute mehrere seltenerddotierte (Oxo)nitridosilicate, die interessante Lumineszenzeigenschaften zeigen. Dieser Aufsatz gibt nur einen kurzen Überblick über einige der vielversprechendsten Leuchtstoffe.…”

Section: Lumineszenzunclassified

Nitridosilicate und Oxonitridosilicate: von keramischen Materialien zu struktureller und funktioneller Diversität

Zeuner¹,

Pagano²,

Schnick³

2011

Angewandte Chemie

103

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Silicate sind eine der wichtigsten Verbindungsklassen auf diesem Planeten, und mehr als 1000 Vertreter wurden im Mineralreich bereits identifiziert. Zusätzlich wurden auch mehrere hundert künstliche Silicate synthetisiert. Der Ersatz von Sauerstoff durch Stickstoff führt zur strukturell vielseitigen Klasse der Nitridosilicate. Siliciumnitrid, eines der wichtigsten nichtoxidischen keramischen Materialien, ist die binäre Stammverbindung der Nitridosilicate, und sie symbolisiert die inhärenten Materialeigenschaften dieser Verbindungen. Allerdings ist eine breite systematische Erforschung der Nitridosilicate erst in den letzten Dekaden erfolgt. Mittlerweile haben diese und verwandte Verbindungen ein bemerkenswertes Ausmaß an industrieller Anwendung erreicht. Dieser Aufsatz illustriert jüngste Fortschritte bei der Synthese, der Aufklärung von Struktur‐Eigenschafts‐Beziehungen und den Anwendungen von Nitridosilicaten, Oxonitridosilicaten und den verwandten SiAlONen.

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“…The rare earth triply-doped solid state materials showing infrared to visible frequency up-conversion are very promising candidates for the visible lasers with multicolor or white luminescence after NIR excitation [1][2][3][4]. The efficiency of the up-conversion process depends on the physical properties of the host medium and the concentration of the doping ions.…”

Section: Introductionmentioning

confidence: 99%

Micro-Raman investigation of KGd(WO4)2 single crystals triply-doped with Pr3+/ Tm3+/Yb3+, Ho3+/Tm3+/Yb3+ and Er3+/Tm3+/Yb3+ ions

Kasprowicz

Majchrowski

Michalski

2011

Journal of Alloys and Compounds

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White light emission from Tm3+/Dy3+ co-doped oxyfluoride germanate glasses under UV light excitation

Cited by 135 publications

References 23 publications

Nanocrystallisation in oxyfluoride systems: mechanisms of crystallisation and photonic properties

Nanocrystallisation in oxyfluoride systems: mechanisms of crystallisation and photonic properties

Nitridosilicate und Oxonitridosilicate: von keramischen Materialien zu struktureller und funktioneller Diversität

Micro-Raman investigation of KGd(WO4)2 single crystals triply-doped with Pr3+/ Tm3+/Yb3+, Ho3+/Tm3+/Yb3+ and Er3+/Tm3+/Yb3+ ions

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