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Design Strategies for Solar Cells Devised to the Low Wavelengths Portion of the Solar Spectrum
S. Daliento, O. Tari, L. Lancellotti, F. Roca, K.C. Heasman, L.M. Brown
PV Array, Shading, Maximum Power Point Tracking (MPPT), Mismatch
Wafer-based Silicon Solar Cells and Materials Technology
Subtopic: Silicon Solar Cell Characterisation and Modelling
Event: 26th European Photovoltaic Solar Energy Conference and Exhibition
Session: 2BV.2.19
1459 - 1462
ISBN: 3-936338-27-2
Paper DOI: 10.4229/26thEUPVSEC2011-2BV.2.19
0,00 EUR
Document(s): paper


Beam split is an alternative point of view, with respect to multijunction, to recover spectral mismatch of single junction devices. Different portions of the solar spectrum should be directed to bandgap optimized devices, however some advantages could be attained by simply optimizing silicon devices to different portions of the solar spectrum. In this paper we analyze design strategies to optimize the collection capabilities of a silicon receiver illuminated by the low wavelength portion of the solar spectrum. The analysis is performed by means of three dimensional simulations compared with experiments. Results show that special care should be given to the emitter junction depth because a strong drop of efficiency occurs when same criteria of full spectrum cells are adopted.