Photon Reabsorption in Mixed CsPbCl3:CsPbI3 Perovskite Nanocrystal Films for Light-Emitting Diodes

Handle URI:
http://hdl.handle.net/10754/626719
Title:
Photon Reabsorption in Mixed CsPbCl3:CsPbI3 Perovskite Nanocrystal Films for Light-Emitting Diodes
Authors:
Davis, Nathaniel J. L. K.; de la Peña, Francisco J.; Tabachnyk, Maxim; Richter, Johannes M.; Lamboll, Robin D.; Booker, Edward P.; Wisnivesky Rocca Rivarola, Florencia; Griffiths, James T. ( 0000-0002-1198-1372 ) ; Ducati, Caterina; Menke, S. Matthew ( 0000-0003-4468-0223 ) ; Deschler, Felix; Greenham, Neil C. ( 0000-0002-2155-2432 )
Abstract:
Cesium lead halide nanocrystals, CsPbX3 (X = Cl, Br, I), exhibit photoluminescence quantum efficiencies approaching 100% without the core–shell structures usually used in conventional semiconductor nanocrystals. These high photoluminescence efficiencies make these crystals ideal candidates for light-emitting diodes (LEDs). However, because of the large surface area to volume ratio, halogen exchange between perovskite nanocrystals of different compositions occurs rapidly, which is one of the limiting factors for white-light applications requiring a mixture of different crystal compositions to achieve a broad emission spectrum. Here, we use mixtures of chloride and iodide CsPbX3 (X = Cl, I) perovskite nanocrystals where anion exchange is significantly reduced. We investigate samples containing mixtures of perovskite nanocrystals with different compositions and study the resulting optical and electrical interactions. We report excitation transfer from CsPbCl3 to CsPbI3 in solution and within a poly(methyl methacrylate) matrix via photon reabsorption, which also occurs in electrically excited crystals in bulk heterojunction LEDs.
Citation:
Davis NJLK, de la Peña FJ, Tabachnyk M, Richter JM, Lamboll RD, et al. (2017) Photon Reabsorption in Mixed CsPbCl3:CsPbI3 Perovskite Nanocrystal Films for Light-Emitting Diodes. The Journal of Physical Chemistry C 121: 3790–3796. Available: http://dx.doi.org/10.1021/acs.jpcc.6b12828.
Publisher:
American Chemical Society (ACS)
Journal:
The Journal of Physical Chemistry C
Issue Date:
24-Jan-2017
DOI:
10.1021/acs.jpcc.6b12828
Type:
Article
ISSN:
1932-7447; 1932-7455
Sponsors:
N.J.L.K.D. thanks the Cambridge Commonwealth European and International Trust, Cambridge Australian Scholarships, and Charles K. Allen for financial support. M.T. thanks the Gates Cambridge Trust, EPSRC, and the Winton Programme for the Physics of Sustainability for financial support. J.R. thanks the Cambridge Commonwealth European and International Trust, EPSRC and the Winton Programme for the Physics of Sustainability for financial support. E.P.B. thanks the EPSRC Centre for Doctoral Training: New and Sustainable Photovoltaics. R.D.L. thanks the EPSRC for funding. S.M.M. acknowledges competitive research funding from King Abdullah University of Science and Technology (KAUST). F.W.R.R. gratefully thanks financial support from CNPq Grant No. 246050/2012-8. F.W.R.R. and C.D. acknowledge funding from the ERC under Grant No. 259619 PHOTO-EM. C.D. acknowledges financial support from the EU under Grant No. 312483 ESTEEM2. F.D. is thankful for the Herchel Smith fellowship. This work was supported by the EPSRC (Grant Nos. EP/M005143/1, EP/G060738/1, and EP/G037221/1).
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Full metadata record

DC FieldValue Language
dc.contributor.authorDavis, Nathaniel J. L. K.en
dc.contributor.authorde la Peña, Francisco J.en
dc.contributor.authorTabachnyk, Maximen
dc.contributor.authorRichter, Johannes M.en
dc.contributor.authorLamboll, Robin D.en
dc.contributor.authorBooker, Edward P.en
dc.contributor.authorWisnivesky Rocca Rivarola, Florenciaen
dc.contributor.authorGriffiths, James T.en
dc.contributor.authorDucati, Caterinaen
dc.contributor.authorMenke, S. Matthewen
dc.contributor.authorDeschler, Felixen
dc.contributor.authorGreenham, Neil C.en
dc.date.accessioned2018-01-04T07:51:41Z-
dc.date.available2018-01-04T07:51:41Z-
dc.date.issued2017-01-24en
dc.identifier.citationDavis NJLK, de la Peña FJ, Tabachnyk M, Richter JM, Lamboll RD, et al. (2017) Photon Reabsorption in Mixed CsPbCl3:CsPbI3 Perovskite Nanocrystal Films for Light-Emitting Diodes. The Journal of Physical Chemistry C 121: 3790–3796. Available: http://dx.doi.org/10.1021/acs.jpcc.6b12828.en
dc.identifier.issn1932-7447en
dc.identifier.issn1932-7455en
dc.identifier.doi10.1021/acs.jpcc.6b12828en
dc.identifier.urihttp://hdl.handle.net/10754/626719-
dc.description.abstractCesium lead halide nanocrystals, CsPbX3 (X = Cl, Br, I), exhibit photoluminescence quantum efficiencies approaching 100% without the core–shell structures usually used in conventional semiconductor nanocrystals. These high photoluminescence efficiencies make these crystals ideal candidates for light-emitting diodes (LEDs). However, because of the large surface area to volume ratio, halogen exchange between perovskite nanocrystals of different compositions occurs rapidly, which is one of the limiting factors for white-light applications requiring a mixture of different crystal compositions to achieve a broad emission spectrum. Here, we use mixtures of chloride and iodide CsPbX3 (X = Cl, I) perovskite nanocrystals where anion exchange is significantly reduced. We investigate samples containing mixtures of perovskite nanocrystals with different compositions and study the resulting optical and electrical interactions. We report excitation transfer from CsPbCl3 to CsPbI3 in solution and within a poly(methyl methacrylate) matrix via photon reabsorption, which also occurs in electrically excited crystals in bulk heterojunction LEDs.en
dc.description.sponsorshipN.J.L.K.D. thanks the Cambridge Commonwealth European and International Trust, Cambridge Australian Scholarships, and Charles K. Allen for financial support. M.T. thanks the Gates Cambridge Trust, EPSRC, and the Winton Programme for the Physics of Sustainability for financial support. J.R. thanks the Cambridge Commonwealth European and International Trust, EPSRC and the Winton Programme for the Physics of Sustainability for financial support. E.P.B. thanks the EPSRC Centre for Doctoral Training: New and Sustainable Photovoltaics. R.D.L. thanks the EPSRC for funding. S.M.M. acknowledges competitive research funding from King Abdullah University of Science and Technology (KAUST). F.W.R.R. gratefully thanks financial support from CNPq Grant No. 246050/2012-8. F.W.R.R. and C.D. acknowledge funding from the ERC under Grant No. 259619 PHOTO-EM. C.D. acknowledges financial support from the EU under Grant No. 312483 ESTEEM2. F.D. is thankful for the Herchel Smith fellowship. This work was supported by the EPSRC (Grant Nos. EP/M005143/1, EP/G060738/1, and EP/G037221/1).en
dc.publisherAmerican Chemical Society (ACS)en
dc.titlePhoton Reabsorption in Mixed CsPbCl3:CsPbI3 Perovskite Nanocrystal Films for Light-Emitting Diodesen
dc.typeArticleen
dc.identifier.journalThe Journal of Physical Chemistry Cen
dc.contributor.institutionCavendish Laboratory, University of Cambridge, J.J. Thomson Avenue, Cambridge, CB3 0HE, U.K.en
dc.contributor.institutionDepartment of Materials Science and Metallurgy, University of Cambridge, 27 Charles Babbage Road, Cambridge, CB3 0FS, U.K.en
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