Room temperature luminescence properties of fluorescent SiC as white light emitting diode medium

2012 ◽  
Vol 522 ◽  
pp. 33-35 ◽  
Author(s):  
J.W. Sun ◽  
V. Jokubavicius ◽  
R. Liljedahl ◽  
R. Yakimova ◽  
S. Juillaguet ◽  
...  
Keyword(s):  
White Light ◽  
Room Temperature ◽  
Light Emitting Diode ◽  
Luminescence Properties ◽  
Light Emitting ◽  
Room Temperature Luminescence

Tunable luminescence from Sm3+, Ce3+ codoped Al2O3–La2O3–SiO2 glasses for white light emission

2009 ◽  
Vol 24 (5) ◽  
pp. 1730-1734 ◽  
Author(s):  
Hucheng Yang ◽  
G. Lakshminarayana ◽  
Yu Teng ◽  
Shifeng Zhou ◽  
Jianrong Qiu
Keyword(s):  
Energy Transfer ◽  
White Light ◽  
Spectral Properties ◽  
Light Emission ◽  
Light Emitting Diode ◽  
Fluorescence Decay ◽  
White Light Emission ◽  
Luminescence Properties ◽  
Light Emitting ◽  
Luminescence Efficiency

Sm3+, Ce3+ codoped Al2O3–La2O3–SiO2 glasses were prepared and their luminescence properties were characterized. Blue-cyan to orange-red tunable luminescence was observed from these glasses with different excitation wavelengths ranging from 385 to 410 nm. White light emission with internal luminescence efficiency 42% has been observed using commercially available purple light-emitting-diode excitation. The energy transfer between Ce3+ and Sm3+ has also been investigated from fluorescence decay curves and spectral properties.

Luminescence properties of Eu2+-activated NaCaBeSi2O6F for white light-emitting diode applications

2018 ◽  
Vol 100 ◽  
pp. 26-31 ◽  
Author(s):  
Irish Valerie B. Maggay ◽  
Kai-Yuan Yeh ◽  
Bingfu Lei ◽  
Mikhail G. Brik ◽  
Michal Piasecki ◽  
...  
Keyword(s):  
White Light ◽  
Light Emitting Diode ◽  
Luminescence Properties ◽  
Light Emitting

scholarly journals Light-emitting diode light–enabled denitrative etherification of 4-nitrobenzonitrile under catalyst-free conditions at room temperature

2020 ◽  
pp. 174751982092537
Author(s):  
Roghaye Soltani ◽  
Fatemeh Abdollahi ◽  
Arash Ghaderi
Keyword(s):  
White Light ◽  
Ultraviolet Irradiation ◽  
Room Temperature ◽  
Light Emitting Diode ◽  
Reaction Times ◽  
Light Emitting ◽  
Catalyst Free

In this study, we have developed a catalyst-free procedure for denitrative etherification of electron-deficient nitroarenes. In this method, the reaction failed in the dark but was enabled by white light-emitting diode light (6 W) in the presence of NaOH/dimethylformamide at room temperature with short reaction times. Interestingly, the reaction in the dark is completed almost immediately once a small quantity of water is added to the reaction mixture. Ultraviolet irradiation (λ = 254 nm) was not effective for this reaction to proceed.

Characterization and luminescence properties of Sr2Si5N8:Eu2+ phosphor for white light-emitting-diode illumination

2006 ◽  
Vol 88 (16) ◽  
pp. 161908 ◽  
Author(s):  
Xianqing Piao ◽  
Takashi Horikawa ◽  
Hiromasa Hanzawa ◽  
Ken-ichi Machida
Keyword(s):  
White Light ◽  
Light Emitting Diode ◽  
Luminescence Properties ◽  
Light Emitting

GaN quantum dot UV light emitting diode

2003 ◽  
Vol 798 ◽  
Author(s):  
Jeong-Sik Lee ◽  
Satoru Tanaka ◽  
Peter Ramvall ◽  
Hiroaki Okagawa
Keyword(s):  
Quantum Dots ◽  
Quantum Dot ◽  
Active Layer ◽  
Room Temperature ◽  
Uv Light ◽  
Light Emitting Diode ◽  
Current Injection ◽  
High Density ◽  
Light Emitting ◽  
Room Temperature Luminescence

ABSTRACTThe fabrication and evaluation of a UV light-emitting diode (LED) incorporating GaN quantum dots as the active layer is demonstrated. The GaN quantum dots were fabricated on an AlxGa1-xN (x∼0.1) surface using Si as an antisurfactant. Exposing the AlxGa1-xN surface to the Si antisurfactant prior to GaN growth enabled the formation of quantum dots on a surface where growth by the Stranski-Krastanov mode would not be possible. A fairly high density of dots (1010-1011 cm-2) with controllable dot sizes was achieved. Room temperature luminescence at 360 nm was clearly observed during current injection (cw) into an LED structure including the GaN quantum dots. The origin of the electroluminescence is discussed by comparing it to photoluminescence measurements.

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