Partner: Fraunhofer IISB, Erlangen
period: 2023 – 2025
acknowledgements: FZK02P22K030

Abstract
Development of a SiC-Avalanche-Photodiode for flame and fire detection
Fraunhofer IISB and sglux GmbH have started working on the development of a manufacturing process for a SiC-based avalanche photodiode (APD) as part of the “KMU-innovativ” project. An APD amplifies the photocurrent through the avalanche effect and therefore has a significantly higher sensitivity than a conventional SiC photodiode. Applications are in the area of flame and fire detection.
Successful completion of the project would create an interesting alternative to the gas discharge tubes currently in use. Although these tubes are capable of reliably detecting very low levels of UV radiation, they have disadvantages that are not found in semiconductor-based UV detectors: The gas discharge tubes are relatively large, fragile, require a high operating voltage and have a short service life.
The first prototypes of the novel SiC APD will be available in mid 2024.