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Emberion develops novel Hyperspectral array

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Graphene-based sensor couples capabilities of silicon and InGaAs at 30 percent less cost

At Laser World of Photonics (Munich June 24 - 27th 2019), Emberion, a spinout of the EU's Graphene Flagship project, will be launching an ultra-sensitive VIS-SWIR photodetector combining graphene transistors with a light absorbing layer made from colloidal quantum dots.

The quantum dots are integrated on the graphene transducers and are tailored to meet specific wavelength range and response curve requirements.

The company says that its solution couples the capabilities of silicon and InGaAs in one graphene-based sensor, allowing for ~30 percent cost reduction.

The photodetector covers wavelengths from 400 to 1800nm. Penetrating through material, the SWIR light allows for quick analysis of organic products, such as food and chemical composition.

"Graphene's unique properties and its compatibility to combine with other materials allowed us to create this cost-effective array for spectrometers," explained Tapani Ryhänen, CEO of Emberion. "Providing broad spectrum capabilities, without the expense of traditional InGaAs sensors, the VIS-SWIR graphene photodetector provides a digital output using Emberion's inhouse designed read out circuits (ROIC) - without the need to translate analogue data with additional components.

"With sensitivity and noise levels comparable to InGaAs detectors, our graphene-based sensors are a more affordable option for businesses who were previously faced with costly products."

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