Efficient 1.77 eV-bandgap perovskite and all-perovskite tandem solar cells enabled by long-alkyl phosphonic acid
Hongling Guan, Shiqiang Fu, Guojun Zeng, Weiqing Chen, Chen Wang, Hongsen Cui, Dexin Pu, Peng Jia, Weiwei Meng, Guojia Fang, Weijun Ke
Abstract
Incorporating dodecylphosphonic acid additives into 1.77 eV-bandgap perovskites enabled single-junction solar cells to achieve a PCE of 20.2%. Tandem cells further reached impressive PCEs of 27.41% (two-terminal) and 28.65% (four-terminal).
Topics & Concepts
Perovskite (structure)TandemAlkylBand gapMaterials scienceOptoelectronicsChemical engineeringChemistryCrystallographyOrganic chemistryComposite materialEngineeringPerovskite Materials and ApplicationsConducting polymers and applicationsSolid-state spectroscopy and crystallography