Free-standing nanopaper electrode for all-printed super-flexible perovskite solar cells
da, Silva Wilson Jose
Kim, Hyeong Pil
Carnio, Brett Nathan
Noh, Mohamad Firdaus Mohamad
Soh, Mohd Fairuz
Elezzabi, Abdulhakem Youssef
Teridi, Mohd Asri Mat
Yusoff, Abd. Rashid Mohd
Nazeeruddin, Mohammad K.
KAUST DepartmentChemical Science Program
KAUST Solar Center (KSC)
Physical Science and Engineering (PSE) Division
Permanent link to this recordhttp://hdl.handle.net/10754/668226
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AbstractThe development of all-printed, flexible solar cells of high efficiency and ultra-low weight will offer advancements for new market entrants. Herein, we report the design and fabrication of all-printed in ambient air, super-flexible perovskite solar cells with approaching 20% power conversion efficiency and extremely low weight of 5.1 g m-2 leading to an unprecedented power-to-weight ratio of 38,470 W Kg-1. This performance advance was achieved through the design of a highly transparent and conducting nanopaper used as a free-standing bottom electrode (FSBE). The FSBE consisted of cellulose nanocrystals grafted with semi-metallic super-reduced polyoxometalate clusters that enabled high conductivities up to 18 S cm-1 combined with transparency >96%. It also acted as a conformal barrier preventing performance loss upon heating at 95 oC under continuous illumination in inert environment; and strong resistance to decomposition when immersed in a mild citric acid water solution for 100 days, which we further exploit to demonstrate full device recyclability. The inherent flexibility of cellulose nanocrystals enabled remarkable flexibility of these cells under 2,000 repeated bending and folding cycles and mechanical strength upon extensive strain up to 20%. Notably, the nanopaper remained unaffected for strains up to 60%. These findings open the door for efficient and lightweight solar cells with a low environmental impact.
CitationVasilopoulou, M., da, S. W. J., Kim, H. P., Carnio, B. N., Ahvazi, B., Noh, M. F. M., … Nazeeruddin, M. K. (2021). Free-standing nanopaper electrode for all-printed super-flexible perovskite solar cells. doi:10.21203/rs.3.rs-296909/v1
SponsorsM.V., A.A., P.A. and D.D. acknowledge support of this work by the project “Development of Materials and Devices for Industrial, Health, Environmental and Cultural Applications” (MIS 5002567) which is implemented under the “Action for the Strategic Development on the Research and Technological Sector”, funded by the Operational Programme "Competitiveness, Entrepreneurship and Innovation" (NSRF 2014-2020) and co-financed by Greece and the European Union (European Regional Development Fund). M.A.M.T, M.F.M.N., and M.F.S. would like to thank Universiti Kebangsaan Malaysia for the financial supports through Research University Grant (GUP-2020-073).
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