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Integrated Solar Energy Harvesting and Storage

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4 Author(s)
Guilar, N. ; Dept. of Electr. & Comput. Eng., California Univ., Davis, CA ; Chen, A. ; Kleeburg, T. ; Amirtharajah, R.

To explore integrated solar energy harvesting as a power source for low power systems such as wireless sensor nodes, an array of energy scavenging photodiodes based on a passive-pixel architecture for imagers and have been fabricated together with storage capacitors implemented using on-chip interconnect in a 0.35 mum CMOS logic process. Integrated vertical plate capacitors enable dense energy storage without limiting optical efficiency. Measurements show 225 muW/mm2 output power generated by a light intensity of 20k LUX

Published in:

Low Power Electronics and Design, 2006. ISLPED'06. Proceedings of the 2006 International Symposium on

Date of Conference:

4-6 Oct. 2006