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Polymer Nanoreactors Shield Perovskite Nanocrystals from Degradation

[Image: see text] Halide perovskite nanocrystals (NCs) have shown impressive advances, exhibiting optical properties that outpace conventional semiconductor NCs, such as near-unity quantum yields and ultrafast radiative decay rates. Nevertheless, the NCs suffer even more from stability problems at a...

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Autores principales: Hintermayr, Verena A., Lampe, Carola, Löw, Maximilian, Roemer, Janina, Vanderlinden, Willem, Gramlich, Moritz, Böhm, Anton X., Sattler, Cornelia, Nickel, Bert, Lohmüller, Theobald, Urban, Alexander S.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2019
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6892581/
https://www.ncbi.nlm.nih.gov/pubmed/31322894
http://dx.doi.org/10.1021/acs.nanolett.9b00982
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author Hintermayr, Verena A.
Lampe, Carola
Löw, Maximilian
Roemer, Janina
Vanderlinden, Willem
Gramlich, Moritz
Böhm, Anton X.
Sattler, Cornelia
Nickel, Bert
Lohmüller, Theobald
Urban, Alexander S.
author_facet Hintermayr, Verena A.
Lampe, Carola
Löw, Maximilian
Roemer, Janina
Vanderlinden, Willem
Gramlich, Moritz
Böhm, Anton X.
Sattler, Cornelia
Nickel, Bert
Lohmüller, Theobald
Urban, Alexander S.
author_sort Hintermayr, Verena A.
collection PubMed
description [Image: see text] Halide perovskite nanocrystals (NCs) have shown impressive advances, exhibiting optical properties that outpace conventional semiconductor NCs, such as near-unity quantum yields and ultrafast radiative decay rates. Nevertheless, the NCs suffer even more from stability problems at ambient conditions and due to moisture than their bulk counterparts. Herein, we report a strategy of employing polymer micelles as nanoreactors for the synthesis of methylammonium lead trihalide perovskite NCs. Encapsulated by this polymer shell, the NCs display strong stability against water degradation and halide ion migration. Thin films comprising these NCs exhibit a more than 15-fold increase in lifespan in comparison to unprotected NCs in ambient conditions and even survive over 75 days of complete immersion in water. Furthermore, the NCs, which exhibit quantum yields of up to 63% and tunability of the emission wavelength throughout the visible range, show no signs of halide ion exchange. Additionally, heterostructures of MAPI and MAPBr NC layers exhibit efficient Förster resonance energy transfer (FRET), revealing a strategy for optoelectronic integration.
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spelling pubmed-68925812019-12-05 Polymer Nanoreactors Shield Perovskite Nanocrystals from Degradation Hintermayr, Verena A. Lampe, Carola Löw, Maximilian Roemer, Janina Vanderlinden, Willem Gramlich, Moritz Böhm, Anton X. Sattler, Cornelia Nickel, Bert Lohmüller, Theobald Urban, Alexander S. Nano Lett [Image: see text] Halide perovskite nanocrystals (NCs) have shown impressive advances, exhibiting optical properties that outpace conventional semiconductor NCs, such as near-unity quantum yields and ultrafast radiative decay rates. Nevertheless, the NCs suffer even more from stability problems at ambient conditions and due to moisture than their bulk counterparts. Herein, we report a strategy of employing polymer micelles as nanoreactors for the synthesis of methylammonium lead trihalide perovskite NCs. Encapsulated by this polymer shell, the NCs display strong stability against water degradation and halide ion migration. Thin films comprising these NCs exhibit a more than 15-fold increase in lifespan in comparison to unprotected NCs in ambient conditions and even survive over 75 days of complete immersion in water. Furthermore, the NCs, which exhibit quantum yields of up to 63% and tunability of the emission wavelength throughout the visible range, show no signs of halide ion exchange. Additionally, heterostructures of MAPI and MAPBr NC layers exhibit efficient Förster resonance energy transfer (FRET), revealing a strategy for optoelectronic integration. American Chemical Society 2019-07-19 2019-08-14 /pmc/articles/PMC6892581/ /pubmed/31322894 http://dx.doi.org/10.1021/acs.nanolett.9b00982 Text en Copyright © 2019 American Chemical Society This is an open access article published under a Creative Commons Non-Commercial No Derivative Works (CC-BY-NC-ND) Attribution License (http://pubs.acs.org/page/policy/authorchoice_ccbyncnd_termsofuse.html) , which permits copying and redistribution of the article, and creation of adaptations, all for non-commercial purposes.
spellingShingle Hintermayr, Verena A.
Lampe, Carola
Löw, Maximilian
Roemer, Janina
Vanderlinden, Willem
Gramlich, Moritz
Böhm, Anton X.
Sattler, Cornelia
Nickel, Bert
Lohmüller, Theobald
Urban, Alexander S.
Polymer Nanoreactors Shield Perovskite Nanocrystals from Degradation
title Polymer Nanoreactors Shield Perovskite Nanocrystals from Degradation
title_full Polymer Nanoreactors Shield Perovskite Nanocrystals from Degradation
title_fullStr Polymer Nanoreactors Shield Perovskite Nanocrystals from Degradation
title_full_unstemmed Polymer Nanoreactors Shield Perovskite Nanocrystals from Degradation
title_short Polymer Nanoreactors Shield Perovskite Nanocrystals from Degradation
title_sort polymer nanoreactors shield perovskite nanocrystals from degradation
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6892581/
https://www.ncbi.nlm.nih.gov/pubmed/31322894
http://dx.doi.org/10.1021/acs.nanolett.9b00982
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