Publication

Modification of InGaN quantum well luminescence by microstructured buffer layers

Nicolas Grandjean, Jean-François Carlin, Jean-Daniel Ganière
2007
Conference Papers

Abstract

With the aim of increasing the efficiency of green and blue light-emitting diodes, we investigate the luminescence of InGaN/GaN quantum wells on structured GaN buffer layers.

Official source

Nicolas Grandjean, Jean-François Carlin, Jean-Daniel Ganière
2007
Conference Papers

Abstract

With the aim of increasing the efficiency of green and blue light-emitting diodes, we investigate the luminescence of InGaN/GaN quantum wells on structured GaN buffer layers.

Official source

Related concepts (7)

Light-emitting diode

A light-emitting diode (LED) is a semiconductor device that emits light when current flows through it. Electrons in the semiconductor recombine with electron holes, releasing energy in the form of photons. The color of the light (corresponding to the energy of the photons) is determined by the energy required for electrons to cross the band gap of the semiconductor. White light is obtained by using multiple semiconductors or a layer of light-emitting phosphor on the semiconductor device.

Blue laser

A blue laser emits electromagnetic radiation with a wavelength between 400 and 500 nanometers, which the human eye sees in the visible spectrum as blue or violet. Blue lasers can be produced by direct, inorganic diode semiconductor lasers based on quantum wells of gallium(III) nitride at 380-417nm or indium gallium nitride at 450nm diode-pumped solid-state infrared lasers with frequency-doubling to 405nm upconversion of direct diode semiconductor lasers via thullium or paraseodyium doped fibers at 480nm metal vapor, ionized gas lasers of helium-cadmium at 442 nm and 10-200 mW argon-ion lasers at 458 and 488 nm Lasers emitting wavelengths below 445 nm appear violet, but are called blue lasers.

Quantum dot display

A quantum dot display is a display device that uses quantum dots (QD), semiconductor nanocrystals which can produce pure monochromatic red, green, and blue light. Photo-emissive quantum dot particles are used in LCD backlights or display color filters. Quantum dots are excited by the blue light from the display panel to emit pure basic colors, which reduces light losses and color crosstalk in color filters, improving display brightness and color gamut.

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Modification of InGaN quantum well luminescence by microstructured buffer layers

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