Enhancing Efficiency and Intrinsic Stability of Large-Area Blade-Coated Wide-Bandgap Perovskite Solar Cells Through Strain Release

Pu，Dexin1; Zhou，Shun1; Guan，Hongling1; Jia，Peng1; Chen，Guoyi1; Fang，Hongyi1; Fu，Shiqiang1; Wang，Chen1; Hushvaktov，Hakim2; Jumabaev，Abduvakhid2; Meng，Weiwei3; Wang，Xingzhu4,5; Fang，Guojia1; Ke，Weijun1

2024

10.1002/adfm.202314349

Advanced Functional Materials   影响因子和分区

1616-301X

1616-3028

The realization of efficient large-area perovskite solar cells stands as a pivotal milestone for propelling their future commercial viability. However, the upscaling fabrication of perovskite solar cells is hampered by efficiency losses, and the underlying growth mechanism remains enigmatic. Here, it is unveiled that a prevalent upscaling technology, namely blade-coating, inherently triggers top-down inhomogeneity strains, predominantly concentrated on the surface of wide-bandgap perovskite films. Through strain mitigation strategies, the perovskite films exhibit reduced halide vacancies, leading to enhanced stability and improved optoelectronic characteristics. Consequently, the blade-coated perovskite solar cells achieve minimal efficiency loss when transitioning from small-area to large-area devices, enabling the realization of 1 cm-area 1.77 eV-bandgap cells with a remarkable efficiency of 18.71%. Additionally, the strain-relieved device exhibits an exceptional 109% retention of its initial efficiency even after 400 h of continuous operation, in stark contrast to the control device which experiences a decline to 91%. Furthermore, the resulting 4-terminal all-perovskite tandem solar cells crafted utilizing blade-coated 1.77 eV-bandgap subcells achieve a maximum efficiency of 27.64% (stabilized at 27.28%). This study not only sheds light on the intricacies of upscaling preparation techniques but also overcomes potential obstacles that can impede the trajectory toward achieving large-scale perovskite solar cells.

blade coating large area strain tandem solar cells wide-bandgap perovskites

SCI ; EI

英语

其他

MATERIALS SCIENCE

2-s2.0-85181190978

Scopus

1.Key Lab of Artificial Micro- and Nano-Structures of Ministry of Education,School of Physics and Technology,Wuhan University,Wuhan,430072,China
2.Samarkand State University,Samarkand,15 University Blvd.,140104,Uzbekistan
3.South China Academy of Advanced Optoelectronics,South China Normal University,Guangzhou,510006,China
4.Department of Materials Science and Engineering,Southern University of Science and Technology,Shenzhen,518055,China
5.School of Electrical Engineering,University of South China,Hengyang,421001,China

Pu，Dexin,Zhou，Shun,Guan，Hongling,et al. Enhancing Efficiency and Intrinsic Stability of Large-Area Blade-Coated Wide-Bandgap Perovskite Solar Cells Through Strain Release[J]. Advanced Functional Materials,2024.

Pu，Dexin.,Zhou，Shun.,Guan，Hongling.,Jia，Peng.,Chen，Guoyi.,...&Ke，Weijun.(2024).Enhancing Efficiency and Intrinsic Stability of Large-Area Blade-Coated Wide-Bandgap Perovskite Solar Cells Through Strain Release.Advanced Functional Materials.

Pu，Dexin,et al."Enhancing Efficiency and Intrinsic Stability of Large-Area Blade-Coated Wide-Bandgap Perovskite Solar Cells Through Strain Release".Advanced Functional Materials (2024).