Quantum Dots Supply Bulk- and Surface-Passivation Agents for Efficient and Stable Perovskite Solar Cells
Zhumekenov, Ayan A.
Anthopoulos, Thomas D.
Mohammed, Omar F.
Sargent, Edward H.
KAUST DepartmentDivision of Physical Sciences and Engineering, King Abdullah University of Science and Technology (KAUST), Thuwal 23955-6900, Kingdom of Saudi Arabia
KAUST Solar Center (KSC)
Materials Science and Engineering Program
Advanced Membranes and Porous Materials Research Center
Physical Sciences and Engineering (PSE) Division
Chemical Science Program
KAUST Catalysis Center (KCC)
KAUST Grant NumberOSR-2017-CRG-3380
Embargo End Date2020-08-21
Permanent link to this recordhttp://hdl.handle.net/10754/656753
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AbstractWe report a facile processing strategy that utilizes perovskite quantum dots (QDs) to distribute elemental dopants uniformly across a MAPbI3 film and anchor ligands to the film's surface—reducing the film's trap-state density and rendering its surface hydrophobic. QD-treated MAPbI3 films yield solar cells with 21.5% power conversion efficiency (PCE) (versus 18.3% for non-QD-treated) and maintain 80% of their initial PCE under 1-sun continuous illumination for 500 h with improved thermal stability.
SponsorsThis work was supported by the King Abdullah University of Science and Technology (KAUST) and Office of Sponsored Research (OSR) under award no. OSR-2017-CRG-3380. O.M.B. and X.Z. conceived the idea and designed the experiments. X.Z. fabricated the devices and conducted the characterization. J.T. M.W. and Y. Hou contributed to the device stability test. N.G. performed the physical characterizations of the devices. J.L. K.S. J.C. and B.T. conducted the electron microscopy. A.A.Z. Z.C. J.P. and A.Y.A. conducted the XRD. Y.L. did the contact-angle test. C.Y. measured the TRPL. T.A. Y. Han, D.B. O.F.M. and E.H.S. provided advice and expertise. O.M.B. and X.Z. wrote the original draft of the manuscript, and all authors contributed to the final version of the manuscript. The authors declare no competing interests.