High Efficiency Si Solar Cells Characterization Using Impedance Spectroscopy Analysis

A F Braña1, E Forniés2, N López1 and B J García1

Published under licence by IOP Publishing Ltd


Impedance Spectroscopy has been used to analyse commercial Si photovoltaic solar cells, to obtain information about minority carrier lifetimes, series and parallel resistances, and acceptor impurity densities. Silicon solar cells efficiencies ranging between 17 and 18% from different manufacturers have been analysed obtaining differences mainly in the electron lifetimes and doping densities. Relations between these parameters and DC curves are discussed.

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