期刊
NANO LETTERS
卷 14, 期 4, 页码 1961-1967出版社
AMER CHEMICAL SOC
DOI: 10.1021/nl4048064
关键词
Upgraded metallurgical-grade silicon; flexible solar cell; surface plasmons; block copolymer nanolithography
类别
资金
- National Science Foundation [CBET-1066447]
- Air Force Office of Scientific Research (AFOSR) [FA9550-11-1-0017]
- National Science Foundation
- Directorate For Engineering [1066447] Funding Source: National Science Foundation
- Div Of Chem, Bioeng, Env, & Transp Sys [1066447] Funding Source: National Science Foundation
We fabricate high-efficiency, ultrathin (similar to 12 mu m), flexible, upgraded metallurgical-grade polycrystalline silicon solar cells with multiple plasmonic layers precisely positioned on top of the cell to dramatically increase light absorption. This scalable approach increases the optical absorptivity of our solar si cells over a broad range of wavelengths, and they achieve efficiencies eta approximate to 11%. Detailed studies on the electrical and optical properties of the developed solar cells elucidate the light absorption contribution of each individual plasmonic layer. Finite-difference time-domain simulations were also performed to yield further insights into the obtained results. We anticipate that the findings from this work will provide useful design considerations for fabricating a range of different solar cell systems.
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