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Limitation of SPADs quantum efficiency due to the dopants concentration gradient

AuthorsLópez-Martínez, Juan Manuel; Carmona-Galán, R. ; Rodríguez-Váquez, Ángel
Keywordssingle-photon avalanche diode (SPAD)
Device simulation
TCAD simulation
Quantum efficiency
Issue Date2020
PublisherInstitute of Electrical and Electronics Engineers
CitationIEEE International Conference on Electronics, Circuits and Systems (ICECS), 27th (2020)
AbstractSingle-photon avalanche diodes are highly sensitive devices capable of registering the arrival of an individual photon. They are biased beyond breakdown voltage, and thus the electron-hole pairs generated by any incident photon is accelerated by the strong electric field triggering an avalanche current. This paper examines the role of the dopants concentration gradient in the gathering of photons in these devices, and how it can be engineered to maximize quantum efficiency and explain his role to minimize undesirable effects like crosstalk.
Publisher version (URL)https://doi.org/10.1109/ICECS49266.2020.9294798
Appears in Collections:(IMSE-CNM) Comunicaciones congresos
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