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Flexible energy harvesting devices fabricated in scalable thin-film processesare important components in the field of wearable electronics and the Internetof Things. We present a flexible rectenna based on a one-dimensional junctionmetal-insulator-graphene diode, which offers low-noise power detection atterahertz (THz) frequencies. The rectennas are fabricated on a flexiblepolyimide film in a scalable process by photolithography using graphene grownby chemical vapor deposition. A one-dimensional junction area reduces thejunction capacitance and enables operation in the D-band (110 - 170 GHz). Therectenna on polyimide shows a maximum voltage responsivity of 80 V/W at 167 GHzin free space measurements and minimum noise equivalent power of 80pW/$\sqrt{\text{Hz}}$.

Terahertz rectennas on flexible substrates based on one-dimensional metal-insulator-graphene diodes