We investigate single-photon avalanche diodes with a thick absorption zone leading to a high photon detection probability in the near-infrared spectrum, e.g., to 27.9% at 850 nm. Furthermore, modulation doping for tuning the breakdown voltage in single-photon avalanche diodes is used. Modulation doping allows for reduction of the effective doping in the structure during the design phase without process modifications. We compare a modulation doped version with a single-photon avalanche diode not using this technique. We prove that both versions are operational. The modulation doped version shows a reduced dark count rate and afterpulsing probability at the cost of a reduced photon detection probability.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither SPIE nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the SPIE website.