Quantum Dots Supply Bulk- and Surface-Passivation Agents for Efficient and Stable Perovskite Solar Cells

Xiaopeng Zheng, Joel Troughton, Nicola Gasparini, Yuanbao Lin, Mingyang Wei, Yi Hou, Jiakai Liu, Kepeng Song, Zhaolai Chen, Chen Yang, Bekir Turedi, Abdullah Alsalloum, Jun Pan, Jie Chen, Ayan A. Zhumekenov, Thomas D. Anthopoulos, Yu Han, Derya Baran, Omar F. Mohammed, Edward H. SargentOsman Bakr

Research output: Contribution to journalArticlepeer-review

223 Scopus citations


We 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.
Original languageEnglish (US)
Pages (from-to)1963-1976
Number of pages14
Issue number8
StatePublished - May 24 2019

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): OSR-2017-CRG-3380
Acknowledgements: This 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.


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