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Energies, Vol. 9, Pages 975: Aluminum–Titanium Alloy Back Contact Reducing Production Cost of Silicon Thin-Film Solar Cells

In this study, metal films are fabricated by using an in-line reactive direct current magnetron sputtering system. The aluminum–titanium (AlTi) back contacts are prepared by changing the pressure from 10 mTorr to 25 mTorr. The optical, electrical and structural properties of the metal back contacts are investigated. The solar cells with the AlTi had lower contact resistance than those with the silver (Ag) back contact, resulting in a higher fill factor. The AlTi contact can achieve a solar cell conversion efficiency as high as that obtained from the Ag contact. These findings encourage the potential adoption of AlTi films as an alternative back contact to silver for silicon thin-film solar cells.

Authors:   Wu, Hsin-Yu ; Hsu, Chia-Hsun ; Lien, Shui-Yang ; Jiang, Yeu-Long
Journal:   Energies
Volume:   9
edition:   11
Year:   2016
Pages:   975
DOI:   10.3390/en9110975
Publication date:   22-Nov-2016
Facts, background information, dossiers
  • solar cells
  • silver
  • production
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