Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
4758856 | Solar Energy Materials and Solar Cells | 2017 | 7 Pages |
Abstract
The significant degradation of the cell fill factor with decreasing CIGS thickness is found to be related to the presence of craters left behind by micro-fragments of CIGS target, which are weakly incorporated in the film during the LTPED growth and removed during the subsequent process steps. Evidence is also presented that the low-temperature deposition of CIGS on ITO leads to the formation of a Ga-rich CIGS layer at the interface and to an unintentional compositional grading propagating towards the active region of the solar cells. The defects associated with this grading may be responsible for the loss in FF and Voc with respect to the cells deposited on FTO and Mo back contacts.
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
M. Mazzer, S. Rampino, G. Spaggiari, F. Annoni, D. Bersani, F. Bissoli, M. Bronzoni, M. Calicchio, E. Gombia, A. Kingma, F. Pattini, E. Gilioli,