期刊
APPLIED PHYSICS LETTERS
卷 104, 期 21, 页码 -出版社
AMER INST PHYSICS
DOI: 10.1063/1.4880211
关键词
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资金
- National Science Foundation [CMMI 1334269]
- NSF [EPS 1004083]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1334269] Funding Source: National Science Foundation
We demonstrate a route to integrate active material for energy storage directly into a silicon photovoltaic (PV) device, and the synergistic operation of the PV and storage systems for load leveling. Porous silicon supercapacitors with 84% Coulombic efficiency are etched directly into the excess absorbing layer material in a commercially available polycrystalline silicon PV device and coupled with solid-state polymer electrolytes. Our work demonstrates the simple idea both that the PV device can charge the supercapacitor under an external load and that a constant current load can be maintained through periods of intermittent illumination, demonstrating the concept of an all-silicon integrated solar supercapacitor. (C) 2014 AIP Publishing LLC.
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