This paper investigates the intrinsic optoelectronic response of high-quality dual-gated monolayer and bilayer graphene p-n junction devices. Local laser excitation at the p-n interface reveals striking six-fold photovoltage patterns as a function of bottom- and top-gate voltages. These patterns, along with the spatial and density dependence of the photoresponse, strongly suggest that non-local hot-carrier transport, rather than the photovoltaic effect, dominates the intrinsic photoresponse in graphene. This novel regime, characterized by a long-lived and spatially distributed hot carrier population, may open new avenues for optoelectronic technologies that exploit efficient energy transport at the nanoscale. The study uses both electronic transport and optoelectronic measurements to demonstrate that the photothermoelectric effect plays a crucial role in the observed six-fold photovoltage pattern, indicating the presence of hot carriers in graphene. The findings highlight the potential of graphene-based systems for energy harvesting applications, particularly in solar thermoelectric devices.This paper investigates the intrinsic optoelectronic response of high-quality dual-gated monolayer and bilayer graphene p-n junction devices. Local laser excitation at the p-n interface reveals striking six-fold photovoltage patterns as a function of bottom- and top-gate voltages. These patterns, along with the spatial and density dependence of the photoresponse, strongly suggest that non-local hot-carrier transport, rather than the photovoltaic effect, dominates the intrinsic photoresponse in graphene. This novel regime, characterized by a long-lived and spatially distributed hot carrier population, may open new avenues for optoelectronic technologies that exploit efficient energy transport at the nanoscale. The study uses both electronic transport and optoelectronic measurements to demonstrate that the photothermoelectric effect plays a crucial role in the observed six-fold photovoltage pattern, indicating the presence of hot carriers in graphene. The findings highlight the potential of graphene-based systems for energy harvesting applications, particularly in solar thermoelectric devices.