This paper reports a certified efficiency of 23.64% for a (Ag,Cu)(In,Ga)Se₂ solar cell, achieved through a series of strategies. These include a relatively high silver concentration in the absorber, a 'hockey stick'-like gallium profile minimizing bandgap fluctuations, a RbF post-deposition treatment passivating the absorber surface, and light soaking to maximize efficiency. The paper discusses future directions to reach 25% efficiency.
Publisher
Nature Energy
Published On
Apr 01, 2024
Authors
Jan Keller, Klara Kiselman, Olivier Donzel-Gargand, Natalia M. Martin, Melike Babucci, Olle Lundberg, Erik Wallin, Lars Stolt, Marika Edoff
Tags
solar cell
efficiency
AgCuInGaSe2
bandgap fluctuations
light soaking
post-deposition treatment
surface passivation
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