Cascade-type hybrid energy cells for driving wireless sensors
نویسندگان
چکیده
This paper presents a cascade-type compact hybrid energy cell (CHEC) that is capable of individually and concurrently harvesting solar and strain energies. The cell is made up of an n-p homojunction nanowire (NW)-based piezoelectric nanogenerator and a nanocrystalline/amorphous-Si:H single junction cell. Under optical illumination of 10 mW/cm and mechanical vibration of 3 m/s at 3 Hz frequency, the output current and voltage from a single 1.0 cm-sized CHEC, 280 μA and 3.0 V, respectively, are sufficient to drive low-power commercial electronics. Six such CHECs connected in series generate enough electrical power to light emitting diodes or drive a wireless strain gauge sensor node. & 2016 Elsevier Ltd. All rights reserved.
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