A large and growing number of applications benefit from
innovative
and powerful 3D image sensors. Graphene photodetectors can achieve
3D sensing functionalities by intrinsic optoelectronic frequency mixing
due to the nonlinear output characteristics of the sensor. In first
proof of principle distance measurement demonstrations, we achieve
modulation frequencies of 3.1 MHz, signal-to-noise ratios of ∼40
dB, distance detection up to at least 1 m, and a mean accuracy of
25.6 mm. The scalable More than Moore detector approach enables geometrical
fill factors close to 100% and can easily complement powerful functionalities
by simple back-end integration on top of CMOS electronics.