MIDI MINATEC |III-Nitrides semiconductors go infrared
Vendredi 7 juin 2013 12:30
- Duree : 1 heure
Lieu : Amphithéâtre MINATEC - 3 parvis Louis Néel - 38000 Grenoble
Orateur : Eva MONROY (INAC/SP2M)
This presentation outlines first results and presents potential applications of a new infrared optoelectronic technology based on III-nitride semiconductors. III-nitrides have launched the first optoelectronic revolution of the XXI century with the advent of solid-state blue lasers (Blue-ray) and LED lighting (mercury-free lamps, outdoor full-color screens, LED TV). On the other hand, the reduction of semiconductor dimensionality to the nanoscale has paved the way to the fabrication of optoelectronic devices whose color is not determined by the semiconductor band gap but by the geometrical design. Night-vision QWIP cameras or quantum cascade lasers are examples of devices exploiting quantum phenomena in low-dimensional nanostructures using classical compound semiconductors (arsenides, phosphides). The application of these principles to III-nitrides set the basis for a new technology to cover th e infrared spectrum, from the fiber-optic telecom wavelengths (near infrared) to the T-ray band (far infrared), spectral domain that is relevant for non-invasive medical diagnosis, pollution monitoring and detection of a variety of pharmaceutical chemicals, explosives or bio-agents.
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Discipline évènement : (Physique)
Entité organisatrice : (MINATEC)
Nature évènement : (Grand public)
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Nature évènement : (Séminaire)
Evènement répétitif : (Midi MINATEC)
Site de l'évènement : Site Minatec
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