Ultra-thin bifacial CdTe solar cell

Developing a high-quality transparent back contact, while maintaining efficient light transmission through the top absorber layer, are key components for achieving high-efficiency II–VI polycrystalline thin-film tandem solar cells. Combining these two elements, we fabricated ultra-thin bifacial CdTe...

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Veröffentlicht in:	Solar energy materials and solar cells 2007-09, Vol.91 (15), p.1398-1402
Hauptverfasser:	Marsillac, S., Parikh, V.Y., Compaan, A.D.
Format:	Artikel
Sprache:	eng
Schlagworte:	Applied sciences Bifacial Energy Exact sciences and technology Natural energy Photovoltaic conversion Polycrystalline solar cells Solar cells. Photoelectrochemical cells Solar energy Sputtering Ultra-thin CdTe solar cells
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Beschreibung
Zusammenfassung:	Developing a high-quality transparent back contact, while maintaining efficient light transmission through the top absorber layer, are key components for achieving high-efficiency II–VI polycrystalline thin-film tandem solar cells. Combining these two elements, we fabricated ultra-thin bifacial CdTe solar cells (0.68 μm) with ZnTe:N/ITO transparent back contact and achieved efficiencies of 5.7% and 5.0% with illumination from the glass and the contact side, respectively. Device analysis, using ( J– V) and QE measurements, show that the loss in efficiency is due to higher R S and J 0 as well as lower, side-dependent, photons absorption.
ISSN:	0927-0248 1879-3398
DOI:	10.1016/j.solmat.2007.04.025