Abstract

This paper investigates the near-breakdown spectral responsivity of perimeter-gated single-photon avalanche diodes (SPADs). We report, for the first time, the effects of perimeter gating on spectral responsivity. Further, we describe a detailed experimental procedure for measuring spectral response. Our investigation reveals that perimeter gating strongly influences spectral responsivity by broadening the response over the visible range, confirming that perimeter gating activates the volumetric junction of the measured devices.

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