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IEEE Electron Device Letters, 2016 A simplified packaging process was successfully developed for a wafer-level light emitting diode (WL-LED) chip aiming at very-high power solid-state lighting (SSL) applications.
Yibin Zhang +2 more
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Electronics and Power, 1976
The light emitting diode (i. e. d. ) is widely used as indicator lamp, and in displays. The output covers a narrow spectral band which is defined by the material and dopants used. At present red, orange, yellow and green emitting devices are commercially available. The l. e. d. has many of the expected attributes of semiconductor devices including long
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The light emitting diode (i. e. d. ) is widely used as indicator lamp, and in displays. The output covers a narrow spectral band which is defined by the material and dopants used. At present red, orange, yellow and green emitting devices are commercially available. The l. e. d. has many of the expected attributes of semiconductor devices including long
openaire +1 more source
2017
The 2014 Nobel Prize in Physics was awarded “for the invention of efficient blue light-emitting diodes (LEDs) which has enabled bright and energy-saving white light sources” [1, 2, 3], setting a clear target to mankind: energy-efficient and environmental-friendly light sources [4]. The first organic LED (OLED) was reported in 1987 by a team at Kodak [5]
Kordt, Pascal +5 more
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The 2014 Nobel Prize in Physics was awarded “for the invention of efficient blue light-emitting diodes (LEDs) which has enabled bright and energy-saving white light sources” [1, 2, 3], setting a clear target to mankind: energy-efficient and environmental-friendly light sources [4]. The first organic LED (OLED) was reported in 1987 by a team at Kodak [5]
Kordt, Pascal +5 more
openaire +2 more sources
2011
Light-emitting diode (LED) photomodulation has become a recognized player in the world of lasers and light sources. It is used to treat a variety of clinical entities, including photorejuvenation, erythema-induced injury following laser and other cosmetic procedures, and acne vulgaris.
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Light-emitting diode (LED) photomodulation has become a recognized player in the world of lasers and light sources. It is used to treat a variety of clinical entities, including photorejuvenation, erythema-induced injury following laser and other cosmetic procedures, and acne vulgaris.
openaire +3 more sources
1998
Using blue-emitting GaN LEDs on SiC substrate chips as primary light sources, we have fabricated green, yellow, red and white light emitting diodes (LUCOLEDs). The generation of mixed colors, as turquoise and magenta, is also demonstrated. The underlying physical principle is that of luminescence downconversion (Stokes shift), as typical for organic ...
J. Baur, P. Schlotter, J. Schneider
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Using blue-emitting GaN LEDs on SiC substrate chips as primary light sources, we have fabricated green, yellow, red and white light emitting diodes (LUCOLEDs). The generation of mixed colors, as turquoise and magenta, is also demonstrated. The underlying physical principle is that of luminescence downconversion (Stokes shift), as typical for organic ...
J. Baur, P. Schlotter, J. Schneider
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Robust thermal performance of Sr2Si5N8:Eu2+: An efficient red emitting phosphor for light emitting diode based white lighting [PDF]
Applied Physics Letters, 2011 An important component to the advent of solid state lighting technology is the development of inorganic crystalline phosphors for efficient conversion of photons from blue light emitting diodes (LEDs) to other visible wavelengths for greater color ...
Nathan Pfaff +2 more
exaly +2 more sources
Photometry of diode emitters: light emitting diodes and infrared emitting diodes
Applied Optics, 1991New methods are described for luminous intensity and luminous flux determination for small light sources. Introduction of a special multiple point method and correction techniques for integrating spheres are shown.
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Proceedings of the IEEE, 1972
Light-emitting diodes (LEDs) are devices designed to efficiently convert electrical energy into electromagnetic radiation, most of which is visible to the human eye. Some of the disciplines involved in the understanding and utilization of LEDs are reviewed, with emphasis on the III-V semiconducting compounds and GaP LEDs in particular. Salient features
A.A. Bergh, P.J. Dean
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Light-emitting diodes (LEDs) are devices designed to efficiently convert electrical energy into electromagnetic radiation, most of which is visible to the human eye. Some of the disciplines involved in the understanding and utilization of LEDs are reviewed, with emphasis on the III-V semiconducting compounds and GaP LEDs in particular. Salient features
A.A. Bergh, P.J. Dean
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2011
Lighting technology is continuously improving for greater comfort, higher power efficiency and due to concerns about health and environment issues. The evolution of lighting technology through conversion of electricity into light led to the revolution in Light Emitting Diodes (LEDs).
Ramchandra Pode, Boucar Diouf
+4 more sources
Lighting technology is continuously improving for greater comfort, higher power efficiency and due to concerns about health and environment issues. The evolution of lighting technology through conversion of electricity into light led to the revolution in Light Emitting Diodes (LEDs).
Ramchandra Pode, Boucar Diouf
+4 more sources
1979
The sources of optical radiation between approximately 0.1 μm and 1 μm wavelength (1 μm = 10−6 m) may be classed into two types according to their spectral line width. The communication engineer is aware of the desirability of a signal source which is monochromatic.
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The sources of optical radiation between approximately 0.1 μm and 1 μm wavelength (1 μm = 10−6 m) may be classed into two types according to their spectral line width. The communication engineer is aware of the desirability of a signal source which is monochromatic.
openaire +1 more source