Constructing tandem solar cells(TSCs)is a strategy to enhance the power conversion efficiency(PCE)of single-junction photovoltaic technologies.Herein,efficient four-terminal(4 T)perovskite-organic TSCs are developed v...Constructing tandem solar cells(TSCs)is a strategy to enhance the power conversion efficiency(PCE)of single-junction photovoltaic technologies.Herein,efficient four-terminal(4 T)perovskite-organic TSCs are developed via precise control over the crystallization with co-anti-solvents in wide-bandgap perovskite(FA_(0.8) Cs_(0.2) Pb(I_(0.6) Br_(0.4))_(3),energy gap:1.77 eV)film.High-quality perovskite films can be achieved by employing a sophisticated co-anti-solvent technique,which effectively enhances the perovskite crystallinity with large grain size and suppresses the nonradiative recombination with pinhole-free surfaces.The results demonstrate that co-anti-solvents with a low boiling point polarity and nonpolar solvent contribute to superior performance of devices.The wide bandgap semi-transparent perovskite solar cell(ST-PSC)fabricated using co-anti-solvent exhibited a remarkable efficiency of 14.52%,and we successfully obtained an efficiency of 22.5%for 4 T perovskite-organic TSC.These findings inspire bright futures that TSCs could facilitate the development of more effective and sustainable solar energy solutions.展开更多
基金Projects(U23A20138,52173192,52203250)supported by the National Natural Science Foundation of ChinaProject(2022YFB3803300)supported by the National Key Research and Development Program of ChinaProject supported by the State Key Laboratory of Powder Metallurgy,Central South University,China。
文摘Constructing tandem solar cells(TSCs)is a strategy to enhance the power conversion efficiency(PCE)of single-junction photovoltaic technologies.Herein,efficient four-terminal(4 T)perovskite-organic TSCs are developed via precise control over the crystallization with co-anti-solvents in wide-bandgap perovskite(FA_(0.8) Cs_(0.2) Pb(I_(0.6) Br_(0.4))_(3),energy gap:1.77 eV)film.High-quality perovskite films can be achieved by employing a sophisticated co-anti-solvent technique,which effectively enhances the perovskite crystallinity with large grain size and suppresses the nonradiative recombination with pinhole-free surfaces.The results demonstrate that co-anti-solvents with a low boiling point polarity and nonpolar solvent contribute to superior performance of devices.The wide bandgap semi-transparent perovskite solar cell(ST-PSC)fabricated using co-anti-solvent exhibited a remarkable efficiency of 14.52%,and we successfully obtained an efficiency of 22.5%for 4 T perovskite-organic TSC.These findings inspire bright futures that TSCs could facilitate the development of more effective and sustainable solar energy solutions.
