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Article

Local Morphology Effects on the Photoluminescence Properties of Thin CsPbBr3 Nanocrystal Films

1
Dipartimento di Matematica e Fisica “Ennio De Giorgi”, Università del Salento, Via per Arnesano, 73100 Lecce, Italy
2
IMM-CNR Institute for Microelectronic and Microsystems, Via per Monteroni, 73100 Lecce, Italy
*
Author to whom correspondence should be addressed.
Academic Editor: Ivan Mora-Sero
Nanomaterials 2021, 11(6), 1470; https://doi.org/10.3390/nano11061470
Received: 18 May 2021 / Revised: 27 May 2021 / Accepted: 28 May 2021 / Published: 1 June 2021
(This article belongs to the Special Issue Perovskite Nanostructures: From Material Design to Applications)
Lead halide perovskites are emerging as extremely interesting active materials for a wide variety of optoelectronic and photonic devices. A deep understanding of their photophysics is thus fundamental in order to properly understand the origins of the materials active properties and to provide strategies for improving them. In this work, we exploit the local morphological variations in a drop-cast thin CsPbBr3 nanocrystal film to show that the aggregation of NCs has strong effects on the peak wavelengths of PL spectra, the linewidth, and the intensity of dependence on temperature. An analysis based on models that are frequently used in the literature led to completely different conclusions about the intrinsic NC emission properties extracted from spectra measured in points with different contribution of the PL from the aggregates. Our results demonstrate that extreme care has to be used in order to correctly correlate the spectral PL features with the intrinsic emission properties of lead halide perovskite NC films. View Full-Text
Keywords: perovskite; nanocrystal; photoluminescence; time-resolved spectroscopy; confocal microscopy perovskite; nanocrystal; photoluminescence; time-resolved spectroscopy; confocal microscopy
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MDPI and ACS Style

Anni, M.; Cretí, A.; De Giorgi, M.L.; Lomascolo, M. Local Morphology Effects on the Photoluminescence Properties of Thin CsPbBr3 Nanocrystal Films. Nanomaterials 2021, 11, 1470. https://doi.org/10.3390/nano11061470

AMA Style

Anni M, Cretí A, De Giorgi ML, Lomascolo M. Local Morphology Effects on the Photoluminescence Properties of Thin CsPbBr3 Nanocrystal Films. Nanomaterials. 2021; 11(6):1470. https://doi.org/10.3390/nano11061470

Chicago/Turabian Style

Anni, Marco, Arianna Cretí, Maria L. De Giorgi, and Mauro Lomascolo. 2021. "Local Morphology Effects on the Photoluminescence Properties of Thin CsPbBr3 Nanocrystal Films" Nanomaterials 11, no. 6: 1470. https://doi.org/10.3390/nano11061470

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