CO2 sensors could become more energy-efficient

A new infrared source that leverages a suspended silicon nitride membrane was the key to CEA-Leti’s new energy-efficient CO2 sensor, which uses six to seven times less energy than current solutions and, with resolutions of a few parts per million by volume, meets the latest indoor and outdoor air quality standards. Plus, measurement times of under a minute make the sensor suitable for most applications.
CEA-Leti’s sensor will give LED- and filament-based IR sources a run for their money in a field where energy consumption is a crucial factor. The initial prototype was made using a 3D printer. The researchers will now focus on improvements like bringing in vacuum technology to further reduce energy consumption and integrating the IR source and detector on a single chip.

Contact: fabien.laulagnet@cea.fr

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