Journal
SOLAR ENERGY MATERIALS AND SOLAR CELLS
Volume 102, Issue -, Pages 44-49Publisher
ELSEVIER
DOI: 10.1016/j.solmat.2012.03.032
Keywords
Surface plasmon; Quantum dot; Solar cell; Intermediate band; Metallic nanoparticles
Funding
- Air Force Office [FA9550-10-1-0136]
- NSF-EPSCoR [EPS-1003970]
- NASA [242026-1BBX11AQ36A]
- Naval Research Office
- Office Of The Director
- EPSCoR [1003970] Funding Source: National Science Foundation
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Surface plasmon enhancement effect is investigated in InAs/GaAs quantum dots solar cell. A nontrivial enhancement was observed in the photocurrent, quantum efficiency, and the spectral response of the solar cell. The surface plasmon was generated in gold or silver nanoparticles synthesized by a chemical reduction method. The coupling of the metallic nanoparticles to the surface of the solar cell was achieved by utilizing dithiol ligands in conjunction with thermal annealing process. The enhancement was observed in the entire spectral range covered by the solar cell (visible and near infrared spectral regions). This enhancement is attributed to photon scattering and trapping by the surface plasmon generated in the metallic nanoparticles. (C) 2012 Elsevier B.V. All rights reserved.
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