Strong f-f excitation in titanium silicate: Near-UV LED pumped red phosphors with outstanding temperature sensitivity

2021 ◽  
Author(s):  
Jianyan Ding ◽  
Yanling Gao ◽  
Xueping Tang ◽  
Jiangcong Zhou ◽  
Shanshan Ye ◽  
...  
Keyword(s):  
Temperature Sensitivity ◽  
Titanium Silicate ◽  
Red Phosphors ◽  
Uv Led

Color Locating of Ce3+ and Eu2+ Doped Calcium Magnesium Chlorosilicate UV-LED Phosphors

2011 ◽  
Vol 216 ◽  
pp. 16-20 ◽  
Author(s):  
Quan Shen ◽  
Man Man Lu ◽  
Hai Lin ◽  
Chang Min Li
Keyword(s):  
Green Emission ◽  
Mixed Effect ◽  
Co Doping ◽  
Red Phosphors ◽  
Uv Led ◽  
Bluish Green ◽  
Calcium Magnesium ◽  
Co Doped ◽  
Luminescence Color ◽  
The Ideal

Color coordinates (0.1573, 0.0528) and (0.1542, 0.4663) have been identified in Ce3+and Eu2+singly doped calcium magnesium chlorosilicate (CMSC) phosphors, which present the purplish-blue and green lights under ultraviolet (UV) radiation, respectively. In Ce3+/Eu2+co-doped CMSC phosphors, with sensitizing the green emission of Eu2+, Ce3+co-doping changed the luminescence color from green to bluish-green, presenting a preferable mixed effect from two primary colors. Potential mixture of red phosphors will provide the possibility in achieving the ideal white fluorescence under UV-LED excitation.

Development of Silicon Wafer Packaging Technology for Deep UV LED

2020 ◽  
Vol 140 (7) ◽  
pp. 152-157
Author(s):  
Hirofumi Chiba ◽  
Yukio Suzuki ◽  
Yoshiaki Yasuda ◽  
Mitsuyasu Kumagai ◽  
Takaaki Koyama ◽  
...  
Keyword(s):  
Silicon Wafer ◽  
Packaging Technology ◽  
Uv Led ◽  
Deep Uv

REFERENCE UV LED SOURCES

2018 ◽  
Author(s):  
Siarhey Nikanenka ◽  
Evgenii Lutsenko ◽  
D.V. Scums ◽  
Mikalai Rzheutski ◽  
Aliaksandr Kreidzich ◽  
...  
Keyword(s):  
Uv Led

Soil C mineralization and temperature sensitivity in alpine grasslands of the Qinghai-Xizang Plateau

2014 ◽  
Vol 37 (11) ◽  
pp. 988-997 ◽  
Author(s):  
Li XU ◽  
Shu-Xia YU ◽  
Nian-Peng HE ◽  
Xue-Fa WEN ◽  
Pei-Li SHI ◽  
...  
Keyword(s):  
Temperature Sensitivity ◽  
C Mineralization ◽  
Alpine Grasslands ◽  
Soil C ◽  
Xizang Plateau

Quality Preservation of Shredded Carrots Stored in UV LED Packaging System

2014 ◽  
Vol 43 (1) ◽  
pp. 135-140
Author(s):  
Nam Yong Kim ◽  
Dong Sun Lee ◽  
Duck Soon An
Keyword(s):  
Packaging System ◽  
Uv Led

PULSED UV IRRADIATION USING DEEP UV-LED FOR INACTIVATION OF ESCHERICHIA COLI

2019 ◽  
Vol 75 (7) ◽  
pp. III_91-III_96
Author(s):  
Tomoyasu SADO ◽  
Kumiko OGUMA ◽  
Takashi HASHIMOTO ◽  
Shinobu KAZAMA ◽  
Satoshi TAKIZAWA
Keyword(s):  
Escherichia Coli ◽  
Uv Irradiation ◽  
Uv Led ◽  
Deep Uv

scholarly journals Design of a Secondary Freeform Lens of UV LED Mosquito-Trapping Lamp for Enhancing Trapping Efficiency

Crystals ◽  
2018 ◽  
Vol 8 (9) ◽  
pp. 335 ◽  
Author(s):  
Wei-Hsiung Tseng ◽  
Diana Juan ◽  
Wei-Cheng Hsiao ◽  
Cheng-Han Chan ◽  
Hsin-Yi Ma ◽  
...  
Keyword(s):  
Light Intensity ◽  
Intensity Distribution ◽  
Light Emitting Diode ◽  
Trapping Efficiency ◽  
Axially Symmetric ◽  
Light Intensity Distribution ◽  
Light Emitting ◽  
Led Light ◽  
Uv Led ◽  
Freeform Lens

In this study, our proposed ultraviolet light-emitting diode (UV LED) mosquito-trapping lamp is designed to control diseases brought by insects such as mosquitoes. In order to enable the device to efficiently catch mosquitoes in a wider area, a secondary freeform lens (SFL) is designed for UV LED. The lens is mounted on a 3 W UV LED light bar as a mosquito-trapping lamp of the new UV LED light bar module to achieve axially symmetric light intensity distribution. The special SFL is used to enhance the trapping capabilities of the mosquito-trapping lamp. The results show that when the secondary freeform surface lens is applied to the experimental outdoor UV LED mosquito-trapping lamp, the trapping range can be expanded to 100π·m2 and the captured mosquitoes increased by about 300%.

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