The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform
Yan Chen - One of the best experts on this subject based on the ideXlab platform.
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transparent ce3 y3al5o12 glass ceramic for Organic Resin free white light emitting diodes
Ceramics International, 2014Co-Authors: Daqin Chen, Yan ChenAbstract:Abstract A transparent Ce 3+ : Y 3 Al 5 O 12 (Ce: YAG) glass ceramic with high quantum yield of 94% and improved thermal-quenching feature, using low-cost Sb 2 O 3 -based glass as host, is developed to replace the conventional phosphor/Organic-Resin color converter. The constructed glass–ceramic-based white-light-emitting diode exhibits a high luminous efficiency of 130 lm/W, superior to that of the conventional pc-WLED (95 lm/W), and a correlated color temperature of 5298 K as well as a color rendering index of 65, which reveal the prominent feasibility of the present glass ceramic material in high-power Organic-Resin-free WLED application.
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highly thermally stable single component white emitting silicate glass for Organic Resin free white light emitting diodes
ACS Applied Materials & Interfaces, 2014Co-Authors: Xuejie Zhang, Yan Chen, Lin Huang, Mingmei Wu, Jing Wang, Qiang SuAbstract:Thermal management is still a great challenge for high-power phosphor-converted white-light-emitting diodes (pc-WLEDs) intended for future general lighting. In this paper, a series of single-component white-emitting silicate SiO2–Li2O–SrO–Al2O3–K2O–P2O5: Ce3+, Tb3+, Mn2+ (SLSAKP: Ce3+, Tb3+, Mn2+) glasses that simultaneously play key roles as a luminescent convertor and an encapsulating material for WLEDs were prepared via the conventional melt-quenching method, and systematically studied using their absorption spectra, transmittance spectra, photoluminescence excitation and emission spectra in the temperature range 296–498 K, decay curves, and quantum efficiency. The glasses show strong and broad absorption in 250–380 nm region and exhibit intense white emission, produced by in situ mixing of blue-violet, green, and orange-red light from Ce3+, Tb3+, and Mn2+ ions, respectively, in a single glass component. The quantum efficiency of SLSAKP: 0.3%Ce3+, 2.0%Tb3+, 2.0%Mn2+ glass is determined to be 19%. More ...
Qiang Su - One of the best experts on this subject based on the ideXlab platform.
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all inOrganic light convertor based on phosphor in glass engineering for next generation modular high brightness white leds lds
ACS Photonics, 2017Co-Authors: Xuejie Zhang, Jinbo Yu, Jing Wang, Hongwu Zhang, Yurong Li, Zifeng Tian, Yi Li, Qiang SuAbstract:Superhigh brightness, reliability, and modularization are three key features of state-of-the-art high-brightness solid state lighting, such as high-power white light-emitting diodes (white LEDs) and white laser diodes (white LDs). However, these features are inevitably limited by the Organic Resin packing material, as a crucial component of the white lighting device, because of its unstable property at high temperature and low thermal conductivity. Here, we report a robust light convertor that can simultaneously play key roles as a phosphor and an alternative encapsulating material via phosphor-in-glass (PiG) engineering. We employed a combination of powder X-ray diffraction, scanning electron microscope, energy dispersive spectrometer (EDS), EDS mapping, confocal laser scanning microscope, cathodoluminescence mapping, in conjunction with micro-PL system with a point-by-point scanning mode to study the detailed structure of PiG samples. This Y3Al5O12:Ce3+-based PiG exhibits a high external quantum efficie...
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highly thermally stable single component white emitting silicate glass for Organic Resin free white light emitting diodes
ACS Applied Materials & Interfaces, 2014Co-Authors: Xuejie Zhang, Yan Chen, Lin Huang, Mingmei Wu, Jing Wang, Qiang SuAbstract:Thermal management is still a great challenge for high-power phosphor-converted white-light-emitting diodes (pc-WLEDs) intended for future general lighting. In this paper, a series of single-component white-emitting silicate SiO2–Li2O–SrO–Al2O3–K2O–P2O5: Ce3+, Tb3+, Mn2+ (SLSAKP: Ce3+, Tb3+, Mn2+) glasses that simultaneously play key roles as a luminescent convertor and an encapsulating material for WLEDs were prepared via the conventional melt-quenching method, and systematically studied using their absorption spectra, transmittance spectra, photoluminescence excitation and emission spectra in the temperature range 296–498 K, decay curves, and quantum efficiency. The glasses show strong and broad absorption in 250–380 nm region and exhibit intense white emission, produced by in situ mixing of blue-violet, green, and orange-red light from Ce3+, Tb3+, and Mn2+ ions, respectively, in a single glass component. The quantum efficiency of SLSAKP: 0.3%Ce3+, 2.0%Tb3+, 2.0%Mn2+ glass is determined to be 19%. More ...
Xuejie Zhang - One of the best experts on this subject based on the ideXlab platform.
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all inOrganic light convertor based on phosphor in glass engineering for next generation modular high brightness white leds lds
ACS Photonics, 2017Co-Authors: Xuejie Zhang, Jinbo Yu, Jing Wang, Hongwu Zhang, Yurong Li, Zifeng Tian, Yi Li, Qiang SuAbstract:Superhigh brightness, reliability, and modularization are three key features of state-of-the-art high-brightness solid state lighting, such as high-power white light-emitting diodes (white LEDs) and white laser diodes (white LDs). However, these features are inevitably limited by the Organic Resin packing material, as a crucial component of the white lighting device, because of its unstable property at high temperature and low thermal conductivity. Here, we report a robust light convertor that can simultaneously play key roles as a phosphor and an alternative encapsulating material via phosphor-in-glass (PiG) engineering. We employed a combination of powder X-ray diffraction, scanning electron microscope, energy dispersive spectrometer (EDS), EDS mapping, confocal laser scanning microscope, cathodoluminescence mapping, in conjunction with micro-PL system with a point-by-point scanning mode to study the detailed structure of PiG samples. This Y3Al5O12:Ce3+-based PiG exhibits a high external quantum efficie...
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Thermally Stable White Emitting Eu3+ Complex@Nanozeolite@Luminescent Glass Composite with High CRI for Organic-Resin-Free Warm White LEDs
ACS Applied Materials & Interfaces, 2017Co-Authors: Jinhui Zhang, Shuming Gong, Jinbo Yu, Peng Li, Xuejie Zhang, Yuwei He, Jianbang Zhou, Huanrong Li, Aiyun PengAbstract:Nowadays, it is still a great challenge for lanthanide complexes to be applied in solid state lighting, especially for high-power LEDs because they will suffer severe thermal-induced luminescence quenching and transmittance loss when LEDs are operated at high current. In this paper, we have not only obtained high efficient and thermally chemical stable red emitting hybrid material by introducing europium complex into nanozeolite (NZ) functionalized with the imidazolium-based stopper but also abated its thermal-induced transmittance loss and luminescence quenching behavior via coating it onto a heat-resistant luminescent glass (LG) with high thermal conductivity (1.07 W/mK). The results show that the intensity at 400 K for Eu(PPO)n-C4Si@NZ@LG remains 21.48% of the initial intensity at 300 K, which is virtually 153 and 13 times the intensity of Eu(PPO)3·2H2O and Eu(PPO)n-C4Si@NZ, respectively. Moreover, an Organic-Resin-free warm white LEDs device with a low CCT of 3994K, a high Ra of 90.2 and R9 of 57.9 wa...
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highly thermally stable single component white emitting silicate glass for Organic Resin free white light emitting diodes
ACS Applied Materials & Interfaces, 2014Co-Authors: Xuejie Zhang, Yan Chen, Lin Huang, Mingmei Wu, Jing Wang, Qiang SuAbstract:Thermal management is still a great challenge for high-power phosphor-converted white-light-emitting diodes (pc-WLEDs) intended for future general lighting. In this paper, a series of single-component white-emitting silicate SiO2–Li2O–SrO–Al2O3–K2O–P2O5: Ce3+, Tb3+, Mn2+ (SLSAKP: Ce3+, Tb3+, Mn2+) glasses that simultaneously play key roles as a luminescent convertor and an encapsulating material for WLEDs were prepared via the conventional melt-quenching method, and systematically studied using their absorption spectra, transmittance spectra, photoluminescence excitation and emission spectra in the temperature range 296–498 K, decay curves, and quantum efficiency. The glasses show strong and broad absorption in 250–380 nm region and exhibit intense white emission, produced by in situ mixing of blue-violet, green, and orange-red light from Ce3+, Tb3+, and Mn2+ ions, respectively, in a single glass component. The quantum efficiency of SLSAKP: 0.3%Ce3+, 2.0%Tb3+, 2.0%Mn2+ glass is determined to be 19%. More ...
Jing Wang - One of the best experts on this subject based on the ideXlab platform.
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all inOrganic light convertor based on phosphor in glass engineering for next generation modular high brightness white leds lds
ACS Photonics, 2017Co-Authors: Xuejie Zhang, Jinbo Yu, Jing Wang, Hongwu Zhang, Yurong Li, Zifeng Tian, Yi Li, Qiang SuAbstract:Superhigh brightness, reliability, and modularization are three key features of state-of-the-art high-brightness solid state lighting, such as high-power white light-emitting diodes (white LEDs) and white laser diodes (white LDs). However, these features are inevitably limited by the Organic Resin packing material, as a crucial component of the white lighting device, because of its unstable property at high temperature and low thermal conductivity. Here, we report a robust light convertor that can simultaneously play key roles as a phosphor and an alternative encapsulating material via phosphor-in-glass (PiG) engineering. We employed a combination of powder X-ray diffraction, scanning electron microscope, energy dispersive spectrometer (EDS), EDS mapping, confocal laser scanning microscope, cathodoluminescence mapping, in conjunction with micro-PL system with a point-by-point scanning mode to study the detailed structure of PiG samples. This Y3Al5O12:Ce3+-based PiG exhibits a high external quantum efficie...
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highly thermally stable single component white emitting silicate glass for Organic Resin free white light emitting diodes
ACS Applied Materials & Interfaces, 2014Co-Authors: Xuejie Zhang, Yan Chen, Lin Huang, Mingmei Wu, Jing Wang, Qiang SuAbstract:Thermal management is still a great challenge for high-power phosphor-converted white-light-emitting diodes (pc-WLEDs) intended for future general lighting. In this paper, a series of single-component white-emitting silicate SiO2–Li2O–SrO–Al2O3–K2O–P2O5: Ce3+, Tb3+, Mn2+ (SLSAKP: Ce3+, Tb3+, Mn2+) glasses that simultaneously play key roles as a luminescent convertor and an encapsulating material for WLEDs were prepared via the conventional melt-quenching method, and systematically studied using their absorption spectra, transmittance spectra, photoluminescence excitation and emission spectra in the temperature range 296–498 K, decay curves, and quantum efficiency. The glasses show strong and broad absorption in 250–380 nm region and exhibit intense white emission, produced by in situ mixing of blue-violet, green, and orange-red light from Ce3+, Tb3+, and Mn2+ ions, respectively, in a single glass component. The quantum efficiency of SLSAKP: 0.3%Ce3+, 2.0%Tb3+, 2.0%Mn2+ glass is determined to be 19%. More ...
Daqin Chen - One of the best experts on this subject based on the ideXlab platform.
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transparent ce3 y3al5o12 glass ceramic for Organic Resin free white light emitting diodes
Ceramics International, 2014Co-Authors: Daqin Chen, Yan ChenAbstract:Abstract A transparent Ce 3+ : Y 3 Al 5 O 12 (Ce: YAG) glass ceramic with high quantum yield of 94% and improved thermal-quenching feature, using low-cost Sb 2 O 3 -based glass as host, is developed to replace the conventional phosphor/Organic-Resin color converter. The constructed glass–ceramic-based white-light-emitting diode exhibits a high luminous efficiency of 130 lm/W, superior to that of the conventional pc-WLED (95 lm/W), and a correlated color temperature of 5298 K as well as a color rendering index of 65, which reveal the prominent feasibility of the present glass ceramic material in high-power Organic-Resin-free WLED application.