Near-UV LED-based systems for low-cost and compact oxygen-sensing systems in gas and liquids

Nicola Trivellin; Diego Barbisan; Marika Pietrobon; Denis Badocco; Paolo Pastore; Angelo Cenedese; Gaudenzio Meneghesso; Enrico Zanoni; Matteo Meneghini

doi:10.1117/12.2511696

1 March 2019 Near-UV LED-based systems for low-cost and compact oxygen-sensing systems in gas and liquids

Nicola Trivellin, Diego Barbisan, Marika Pietrobon, Denis Badocco, Paolo Pastore, Angelo Cenedese, Gaudenzio Meneghesso, Enrico Zanoni, Matteo Meneghini

Author Affiliations +

Proceedings Volume 10940, Light-Emitting Devices, Materials, and Applications; 109400V (2019) https://doi.org/10.1117/12.2511696
Event: SPIE OPTO, 2019, San Francisco, California, United States

Abstract

With this work we report on the design, development and testing of near UV LED-based systems for oxygen gas sensing. The design and developed system is an optoelectronic setup based on 405 nm LEDs which excites and measures the photoluminescence emitted from a porphyrin based luminophor. By means of an accurate optical and optoelectronic setup, the system is able to operate without the need of avalanche photodiodes, thus resulting in a compact and low energy structure. The optical setup is specifically designed to maximize both the LED light exciting the luminophor and converted light acquired from the sensor.

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Nicola Trivellin, Diego Barbisan, Marika Pietrobon, Denis Badocco, Paolo Pastore, Angelo Cenedese, Gaudenzio Meneghesso, Enrico Zanoni, and Matteo Meneghini "Near-UV LED-based systems for low-cost and compact oxygen-sensing systems in gas and liquids", Proc. SPIE 10940, Light-Emitting Devices, Materials, and Applications, 109400V (1 March 2019); https://doi.org/10.1117/12.2511696

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KEYWORDS

Sensors

Light emitting diodes

Luminescence

Oxygen

Reflectivity

Photodiodes

Reflectors

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