Comparison of (n+pp+)Cz-Si Solar Cells With ARC of ITO Deposited By Magnetron Sputtering And IFO Deposited By Spray Pyrolysisстатья

Дата последнего поиска статьи во внешних источниках: 28 мая 2015 г.

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[1] Comparison of (n+pp+)cz-si solar cells with arc of ito deposited by magnetron sputtering and ifo deposited by spray pyrolysis / G. G. Untila, T. N. Kost, A. B. Chebotareva et al. // Proceedings 21th European Photovoltaic Solar Energy Conference. — WIP Munich Munich, 2006. — P. 1261–1263. The purpose of this work was to compare the ability of transparent conducting oxides (TCO) films of magne-tron sputtered Indium Tin Oxide (MITO) and deposited by spray pyrolysis Indium Fluorine Oxide (SIFO) to be used as top electrode in (n+pp+)Cz-Si solar cells. Experimental results show that TCO/(n+pp+)Cz-Si/TCO solar cells with SIFO film on the front surface as compared to MITO film have higher short-wavelength external quantum efficiency (∼70% versus 40% at wavelength 400 nm) and, correspondingly, higher short-circuit currents (+1 mA/cm2), higher open-circuit voltage (+13 mV) and as a result, higher efficiency (+0.7% abs). Besides, SIFO film on glass revealed higher short-wavelength transmittance than MITO film. TCO/(pp+)Si structures with MITO and SIFO films were also prepared and tested by QSS-VOC method, which showed that MITO/p-Si junction is poorly rectifying with open circuit voltage UOC∼130 mV whereas SIFO/p-Si junc-tion is essentially more rectifying with UOC∼560 mV. It is concluded, that SIFO film as compared to MITO film better suits to be used as top electrode in TCO/(n+pp+)Cz solar cell because it has better optical properties and better passivates (n+)Si emitter with less risk to shunt pinholes.

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