Long wavelength Ce3+ emission in Y–Si–O–N materials

Krevel, van Jwh Joost; Hintzen, Htjm Bert; Metselaar, R Ruud; Meijerink, Andries

doi:10.1016/s0925-8388(97)00550-1

Cited by 209 publications

(186 citation statements)

References 16 publications

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“…From the viewpoint of luminescent materials, covalent nitrides can be considered as host lattices for phosphors because they have the characteristics of an insulator or semiconductor and wide band gaps, whereas metallic and ionic nitrides are either electrical or ionic conductors and both have narrow band gaps. Furthermore, the covalent chemical bonding in nitrides gives rise to a strong nephelauxetic effect (i.e., electron cloud expansion), reducing the energy of the excited state of the 5d electrons of the activators (e.g., Eu 2+ , Ce 3+ ) [16][17][18][19][20]. This results in long excitation/ emission wavelengths and low thermal quenching, which cannot be achieved in conventional phosphors used in lamps and CRTs.…”

Section: Classification and Crystal Chemistry Of Nitride Compoundsmentioning

confidence: 99%

Silicon-based oxynitride and nitride phosphors for white LEDs—A review

Xie

Hirosaki

2007

Science and Technology of Advanced Materials

936

598

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As a novel class of inorganic phosphors, oxynitride and nitride luminescent materials have received considerable attention because of their potential applications in solid-state lightings and displays. In this review we focus on recent developments in the preparation, crystal structure, luminescence and applications of silicon-based oxynitride and nitride phosphors for white light-emitting diodes (LEDs). The structures of silicon-based oxynitrides and nitrides (i.e., nitridosilicates, nitridoaluminosilicates, oxonitridosilicates, oxonitridoaluminosilicates, and sialons) are generally built up of networks of crosslinking SiN 4 tetrahedra. This is anticipated to significantly lower the excited state of the 5d electrons of doped rare-earth elements due to large crystal-field splitting and a strong nephelauxetic effect. This enables the silicon-based oxynitride and nitride phosphors to have a broad excitation band extending from the ultraviolet to visible-light range, and thus strongly absorb blue-to-green light. The structural versatility of oxynitride and nitride phosphors makes it possible to attain all the emission colors of blue, green, yellow, and red; thus, they are suitable for use in white LEDs. This novel class of phosphors has demonstrated its superior suitability for use in white LEDs and can be used in bichromatic or multichromatic LEDs with excellent properties of high luminous efficacy, high chromatic stability, a wide range of white light with adjustable correlated color temperatures (CCTs), and brilliant color-rendering properties. r

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Section: Classification and Crystal Chemistry Of Nitride Compoundsmentioning

confidence: 99%

Silicon-based oxynitride and nitride phosphors for white LEDs—A review

Xie

Hirosaki

2007

Science and Technology of Advanced Materials

936

598

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“…4 -11 Krevel et al 4 have investigated the significant influence of coordination with N 3 on the emission of Ce with the b-alumina-type structure, which is suitable for fluorescent lamps. The authors have investigated the luminescence of a-SiAlONs activated by different types of rare earth ions a-SiAlON:RE, RE Eu, Tb, or Pr .…”

Section: Introductionmentioning

confidence: 99%

Fluorescence of Eu2+ in Strontium Oxonitridoaluminosilicates (SiAlONS)

栄軍

尚登

吉信

et al. 2005

J. Ceram. Soc. Japan

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“…21 The nitrides and oxynitrides activated by these rare-earth ions have been demonstrated to be promising efficient conversion phosphors for white-LEDs. 22 More recently, interests also have been focused on the luminescence properties of transition metals, such as Mn 2+ .…”

mentioning

confidence: 99%

Photoluminescence Properties of Red-Emitting Mn²⁺-Activated CaAlSiN₃Phosphor for White-LEDs

Zhang

Delsing

Notten

et al. 2013

ECS J. Solid State Sci. Technol.

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Mn2+-doped CaAlSiN3 phosphors have been prepared by a solid-state reaction method at high temperature and the solubility of Mn2+ in the host lattice as well as their photoluminescence properties were investigated. In CaAlSiN3, not only Ca2+ sites, but also Al3+ sites can be substituted by Mn2+ ions. CaAlSiN3 : Mn2+ absorbs blue light in the spectral range of 440–460 nm, and exhibits a broad band emission in the wavelength range of 475–750 nm, which can be ascribed to the 4T1 (4G) → 6A1 (6S) transition of Mn2+ located at two different sites in CaAlSiN3. The emission bands at lower energy (15,950 cm−1 or 627 nm) and higher energy (18,250 cm−1 or 548 nm) are assigned to the Mn2+ locating at the Al site (MnAl) and Ca site (MnCa), respectively with energy transfer from MnCa to MnAl. In addition, the integral luminescence intensity only decreases to about 94% at 150°C of the value at 50°C, which is of great interest for the applications of white-LEDs.

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Long wavelength Ce3+ emission in Y–Si–O–N materials

Cited by 209 publications

References 16 publications

Silicon-based oxynitride and nitride phosphors for white LEDs—A review

Silicon-based oxynitride and nitride phosphors for white LEDs—A review

Fluorescence of Eu2+ in Strontium Oxonitridoaluminosilicates (SiAlONS)

Photoluminescence Properties of Red-Emitting Mn²⁺-Activated CaAlSiN₃Phosphor for White-LEDs

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Long wavelength Ce3+ emission in Y–Si–O–N materials

Cited by 209 publications

References 16 publications

Silicon-based oxynitride and nitride phosphors for white LEDs—A review

Silicon-based oxynitride and nitride phosphors for white LEDs—A review

Fluorescence of Eu2+ in Strontium Oxonitridoaluminosilicates (SiAlONS)

Photoluminescence Properties of Red-Emitting Mn2+-Activated CaAlSiN3Phosphor for White-LEDs

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Photoluminescence Properties of Red-Emitting Mn²⁺-Activated CaAlSiN₃Phosphor for White-LEDs