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Full-band absorption enhancement in ultrathin-filmsolar cells through the excitation of multiresonant guided modes |
Applied Optics, Vol. 51, Issue 13, pp. 2436-2440 (2012)
http://dx.doi.org/10.1364/AO.51.002436
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Abstract
We demonstrate the optimization of plasmonic thin-film solar cells with broadband absorption enhancements. The solar cells model system consists of a three-dimensional, periodic array of Ag/silica cylinders on a Si film supported by a silica substrate. Particle swarm optimization (PSO) and the finite-difference time domain (FDTD) are combined to achieve the maximum absorption enhancement (Ehm). Through optimization, the optimal system parameters, such as the height and diameter of Ag and the silica cylinder, and the period of periodic array, were obtained. Following this approach, we can attain a 321% enhancement in the integrated quantum efficiency as compared to a cell without metallic structures. The full-band absorption enhancement arises from the near-field enhancement and multiresonant guided modes in the Si waveguide.
© 2012 Optical Society of America
OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(350.6050) Other areas of optics : Solar energy
ToC Category:
Optics at Surfaces
History
Original Manuscript: November 16, 2011
Revised Manuscript: February 7, 2012
Manuscript Accepted: February 9, 2012
Published: May 1, 2012
Citation
Linxing Shi, Zhen Zhou, and Bingshu Tang, "Full-band absorption enhancement in ultrathin-filmsolar cells through the excitation of multiresonant guided modes," Appl. Opt. 51, 2436-2440 (2012)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-51-13-2436
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