Selina Kern, Gyusang Yi, Pascal Büttner, Florian Scheler, Minh-Hoa Tran, Sofia Korenko, Katharina E Dehm, Ivan Kundrata, Achim Zahl, Steve Albrecht, Julien Bachmann, Ryan W Crisp
Multijunction solar cells have the prospect of a greater theoretical efficiency limit than single-junction solar cells by minimizing the transmissive and thermalization losses a single absorber material has. In solar cell applications, Sb2 S3 is considered an attractive absorber due to its elemental abundance, stability, and high absorption coefficient in the visible range of the solar spectrum, yet with a band gap of 1.7 eV, it is transmissive for near-IR and IR photons. Using it as the top cell (the cell where light is first incident) in a two-terminal tandem architecture in combination with a bottom cell (the cell where light arrives second) of PbS quantum dots (QDs), which have an adjustable band gap suitable for absorbing longer wavelengths, is a promising approach to harvest the solar spectrum more effectively...
March 9, 2024: ACS Applied Materials & Interfaces