Photovoltaic Materials, Devices, and Technologies

Ridge aperture antenna array as a high efficiency coupler for photovoltaic applications

[+] Author Affiliations
Edward C. Kinzel, Pornsak Srisungsitthisunti, Xianfan Xu

Purdue University, School of Mechanical Engineering and Birck Nanotechnology Center, West Lafayette, Indiana 47907-2088

J. Photon. Energy. 1(1), 017002 (September 29, 2011). doi:10.1117/1.3644613
History: Received March 23, 2011; Revised August 03, 2011; Accepted September 09, 2011; Published September 29, 2011; Online September 29, 2011
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Weak absorption of light near the absorption band edge of a photovoltaic material is one limiting factor on the efficiency of photovoltaics. This is particularly true for silicon thin-film solar cells because of the short optical path lengths and limited options for texturing the front and back surfaces. Directing light laterally is one way to increase the optical path length and absorption. We investigate the use of a periodic array of apertures originated from bowtie aperture antennas to couple incident light into guided modes supported within a thin silicon film. We show the presence of the aperture array can increase the efficiency of a solar cell by as much as 39%.

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© 2011 Society of Photo-Optical Instrumentation Engineers (SPIE)

Citation

Edward C. Kinzel ; Pornsak Srisungsitthisunti and Xianfan Xu
"Ridge aperture antenna array as a high efficiency coupler for photovoltaic applications", J. Photon. Energy. 1(1), 017002 (September 29, 2011). ; http://dx.doi.org/10.1117/1.3644613


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