Efficient Luminescence from Perovskite Quantum Dot Solids

Younghoon Kim, Emre Yassitepe, Oleksandr Voznyy, Riccardo Comin, Grant Walters, Xiwen Gong, Pongsakorn Kanjanaboos, Ana F. Nogueira, Edward H. Sargent

Research output: Contribution to journalArticlepeer-review

474 Scopus citations

Abstract

© 2015 American Chemical Society. Nanocrystals of CsPbX3 perovskites are promising materials for light-emitting optoelectronics because of their colloidal stability, optically tunable bandgap, bright photoluminescence, and excellent photoluminescence quantum yield. Despite their promise, nanocrystal-only films of CsPbX3 perovskites have not yet been fabricated; instead, highly insulating polymers have been relied upon to compensate for nanocrystals' unstable surfaces. We develop solution chemistry that enables single-step casting of perovskite nanocrystal films and overcomes problems in both perovskite quantum dot purification and film fabrication. Centrifugally cast films retain bright photoluminescence and achieve dense and homogeneous morphologies. The new materials offer a platform for optoelectronic applications of perovskite quantum dot solids.
Original languageEnglish (US)
Pages (from-to)25007-25013
Number of pages7
JournalACS Applied Materials & Interfaces
Volume7
Issue number45
DOIs
StatePublished - Nov 5 2015
Externally publishedYes

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledged KAUST grant number(s): KUS-11-009-21
Acknowledgements: This publication is based in part on work supported by Award KUS-11-009-21, made by King Abdullah University of Science and Technology (KAUST), by the Ontario Research Fund Research Excellence Program, and by the Natural Sciences and Engineering Research Council (NSERC) of Canada. E.Y. acknowledges support from Sao Paulo State Research Foundation-Research Internships Abroad (FAPESP-BEPE) (2014/18327-9) fellowship. The authors thank E. Palmiano, R. Wolowiec, and D. Kopilovic for their technical help over the course of this study. We thank the Centre for Microfluidic Systems in Chemistry and Biology (Toronto, Ontario) for the use of an atomic force microscope.
This publication acknowledges KAUST support, but has no KAUST affiliated authors.

Fingerprint

Dive into the research topics of 'Efficient Luminescence from Perovskite Quantum Dot Solids'. Together they form a unique fingerprint.

Cite this