Ce:(Y$_{1-x}$Lu$_{x}$)$_{3}$Al$_{5}$O$_{12}$ single-crystal phosphor plates for high-brightness white LEDs/LDs with high-color rendering (<i>Ra</i> &gt; 90) and temperature stability

Arjoca, Stelian; Vı́llora, Encarnación G.; Inomata, Daisuke; Aoki, Kazuo; Sugahara, Yoshiyuki; Shimamura, Kiyoshi

doi:10.1088/2053-1591/1/2/025041

Cited by 32 publications

(22 citation statements)

References 12 publications

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“…Single crystals have superior thermal robustness owing to the ideal structure, but suffer from serious non‐uniformity of light spot and rather low light extraction efficiency. Moreover, the materials are limited to garnet systems so far . Phosphor ceramics allow for the microstructure tailoring (such as pores, secondary phases, and grain sizes) and offer great freedom in performance control.…”

Section: Discussionmentioning

confidence: 99%

“…They exhibit outstanding thermal stability, high IQE, and comparatively high thermal conductivity. YAG‐based garnet single crystals are attracting great attention for the high‐brightness white laser lighting . Arjoca et al.…”

Section: Survey Of Laser Phosphorsmentioning

confidence: 99%

“…fabricated a (Y,Lu)AG:Ce single crystal, which has a high IQE over 95% and an outstanding thermal stability up to 300 °C. When combined with a blue LD, a white light source is obtained with a CRI of 70 …”

Section: Survey Of Laser Phosphorsmentioning

confidence: 99%

“…The motivation of this article is to overview the state‐of‐art progress on the existing laser phosphors and to provide guidelines for the design of novel laser phosphors. This review starts with the fundamental requirements for laser phosphors, followed by the survey of several phosphor candidates, such as single crystal, phosphor ceramic, phosphor‐in‐glass (PiG), phosphor film, and quantum‐well LED . Then, we discuss the typical computational simulations on luminescence saturation and light uniformity encountered in laser lighting.…”

Section: Introductionmentioning

confidence: 99%

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Color Conversion Materials for High‐Brightness Laser‐Driven Solid‐State Lighting

Wang

Hirosaki

et al. 2018

Laser & Photonics Reviews

293

191

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Solid‐state lighting is advancing toward higher power, higher brightness, and smaller size to cope with the market competitiveness, and laser‐driven solid‐state lighting technology is springing up owing to its super‐high brightness and compactness. These developments put forward new requirements for color conversion materials (i.e., phosphors). Here, the state‐of‐art achievements in laser phosphors are summarized, and the topics of luminescence saturation, light extraction efficiency, and light uniformity encountered in laser lighting technology are discussed. Several typical types of color converters, such as single crystal, phosphor ceramics, phosphor‐in‐glass, phosphor films, and quantum‐well light‐emitting diodes, are comparatively overviewed and discussed. The cutting‐edge applications of high‐brightness white laser light in lighting, displays, healthcare, and communications are summarized. The challenges and outlook in laser‐driven solid‐state lighting and some empirical rules for designing novel laser phosphors are highlighted.

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Section: Discussionmentioning

confidence: 99%

Section: Survey Of Laser Phosphorsmentioning

confidence: 99%

Section: Survey Of Laser Phosphorsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Color Conversion Materials for High‐Brightness Laser‐Driven Solid‐State Lighting

Wang

Hirosaki

et al. 2018

Laser & Photonics Reviews

293

191

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“…Novel material systems or structure configurations of color converters are thus urgently required to be exploited. So far, all‐inorganic color converters with robust heat resistance and high thermal conductivity have been studied for laser excitation, such as single crystals, phosphor ceramics, phosphor‐in‐glasses (PiGs), and phosphor films . Single crystal has a perfect crystal structure free of any defects, as well as an outstanding thermal stability.…”

Section: Introductionmentioning

confidence: 99%

A Thermally Robust La₃Si₆N₁₁:Ce‐in‐Glass Film for High‐Brightness Blue‐Laser‐Driven Solid State Lighting

You

Zheng

et al. 2018

Laser & Photonics Reviews

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Color converter is a key luminescent material in the laser‐driven solid state lighting, which must bear high‐density excitation and serious thermal attack from the incident laser. Here, a thermally robust yellow‐emitting La3Si6N11:Ce‐in‐glass (LSN:Ce‐PiG) film for laser lighting is reported by co‐firing the LSN:Ce and glass powders on a thermally conductive sapphire substrate. No detectable interfacial reaction occurs between the LSN:Ce particle and glass matrix, enabling the film to fully inherit the original thermal robustness and high quantum efficiency. The optical performance of LSN:Ce‐PiG‐converted white laser light has been effectively optimized by changing the phosphor‐to‐glass (PtG) ratio and the film thickness. The highest light conversion efficiency is respectively achieved at PtG = 2:3 and the thickness of 70 µm, and the saturation threshold is found to decrease with either a higher PtG ratio or a thicker film. The optimized LSN:Ce‐PiG film (P2G3‐50) can withstand a maximum laser power density of 12.91 W mm−2 and produce a cool white light with a high luminous flux of 1076 lm (luminance of 773 Mcd m−2), a luminous efficiency of 166.05 lm W−1, a color rendering index of 70. These results make the LSN:Ce‐PiG film a considerably promising color converter for laser lighting.

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Growth of Y ₃ Al ₅ O ₁₂ Single Crystals Via Edge‐Defined Film‐Fed Growth Technique Using MO Crucibles

Tokairin

Hayashi

Villora

et al. 2016

Ceramic Transactions Series

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Ce:(Y$_{1-x}$Lu$_{x}$)$_{3}$Al$_{5}$O$_{12}$ single-crystal phosphor plates for high-brightness white LEDs/LDs with high-color rendering (Ra > 90) and temperature stability

Cited by 32 publications

References 12 publications

Color Conversion Materials for High‐Brightness Laser‐Driven Solid‐State Lighting

Color Conversion Materials for High‐Brightness Laser‐Driven Solid‐State Lighting

A Thermally Robust La₃Si₆N₁₁:Ce‐in‐Glass Film for High‐Brightness Blue‐Laser‐Driven Solid State Lighting

Growth of Y ₃ Al ₅ O ₁₂ Single Crystals Via Edge‐Defined Film‐Fed Growth Technique Using MO Crucibles

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Ce:(Y$_{1-x}$Lu$_{x}$)$_{3}$Al$_{5}$O$_{12}$ single-crystal phosphor plates for high-brightness white LEDs/LDs with high-color rendering (Ra > 90) and temperature stability

Cited by 32 publications

References 12 publications

Color Conversion Materials for High‐Brightness Laser‐Driven Solid‐State Lighting

Color Conversion Materials for High‐Brightness Laser‐Driven Solid‐State Lighting

A Thermally Robust La3Si6N11:Ce‐in‐Glass Film for High‐Brightness Blue‐Laser‐Driven Solid State Lighting

Growth of Y 3 Al 5 O 12 Single Crystals Via Edge‐Defined Film‐Fed Growth Technique Using MO Crucibles

Contact Info

Product

Resources

About

A Thermally Robust La₃Si₆N₁₁:Ce‐in‐Glass Film for High‐Brightness Blue‐Laser‐Driven Solid State Lighting

Growth of Y ₃ Al ₅ O ₁₂ Single Crystals Via Edge‐Defined Film‐Fed Growth Technique Using MO Crucibles