Journal
IEEE TRANSACTIONS ON VERY LARGE SCALE INTEGRATION (VLSI) SYSTEMS
Volume 17, Issue 5, Pages 627-637Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/TVLSI.2008.2006792
Keywords
Energy harvesting; low-power design; photodiodes
Funding
- U.S. Department of Education GAANN Fellowships
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To explore integrated solar energy harvesting as a power source for low power systems, an array of energy scavenging photodiodes based on a passive-pixel architecture for CMOS imagers has been, fabricated together with storage capacitors implemented using on-chip interconnect in a 0.35-mu m bulk process. Integrated vertical plate capacitors enable dense energy storage without limiting optical efficiency. Tests were conducted with both a white light source and a green laser. Measurements indicate that 225 mu W/mm(2) output power may be generated by white light with an intensity of 20 kLUX.
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