Increasing the Collection Efficiency in Selenium Thin-Film Solar Cells Using a Closed-Space Annealing Strategy
Rasmus S. Nielsen,
Markus Schleuning,
Orestis Karalis
et al.
Abstract:Elemental
selenium is an interesting candidate for the
top cell
in tandem solar cells due to its wide bandgap of E
G ≈ 1.95 eV as well as its monatomic simplicity.
To realize high-efficiency selenium solar cells, it is crucial to
optimize the crystallization process of the selenium thin-film photoabsorber.
However, the high vapor pressure of selenium restricts the processing
conditions to a compromise between the growth of large crystal grains
and the formation of pinholes. In this study, we introduce a closed… Show more
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