Dominant non-radiative recombination in perovskite CsPbBr3-xIx quantum dots

Omar E. Solis; Jesus Manuel Rivas; Angel A. Duran-Ledezma; Alejandro Gonzalez-Cisneros; Miguel García-Rocha; Diego Esparza

doi:10.1016/j.matlet.2021.129392

Dominant non-radiative recombination in perovskite CsPbBr_3-xI_x quantum dots

Omar E. Solis, Jesus Manuel Rivas, Angel A. Duran-Ledezma, Alejandro Gonzalez-Cisneros, Miguel García-Rocha, Diego Esparza

Escuela Superior de Ingeniería Mecánica y Eléctrica (ESIME), Unidad Ticomán

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

6 Citas (Scopus)

Resumen

Colloidal perovskite (cesium lead bromide-iodide) quantum dots (PQDs) with different iodine concentration were prepared. These PQDs show excellent optical properties with high light absorption and high photoluminescence. Light absorption is in the range between 500 and 550 nm and extending into the ultraviolet. The photoluminescence spectra show peaks from 490 to 675 nm. Charge carrier lifetime measurements, obtained with the time-resolved photoluminescence technique, indicate that the dominant mechanisms for recombination are the non-radiative recombination processes. Finally, increasing the iodine content, increases defect concentration in the PQDs.

Idioma original	Inglés
Número de artículo	129392
Publicación	Materials Letters
Volumen	289
DOI	https://doi.org/10.1016/j.matlet.2021.129392
Estado	Publicada - 15 abr. 2021

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title = "Dominant non-radiative recombination in perovskite CsPbBr3-xIx quantum dots",

abstract = "Colloidal perovskite (cesium lead bromide-iodide) quantum dots (PQDs) with different iodine concentration were prepared. These PQDs show excellent optical properties with high light absorption and high photoluminescence. Light absorption is in the range between 500 and 550 nm and extending into the ultraviolet. The photoluminescence spectra show peaks from 490 to 675 nm. Charge carrier lifetime measurements, obtained with the time-resolved photoluminescence technique, indicate that the dominant mechanisms for recombination are the non-radiative recombination processes. Finally, increasing the iodine content, increases defect concentration in the PQDs.",

keywords = "Non-radiative recombination, Perovskite quantum dots, TRPL",

author = "Solis, {Omar E.} and {Manuel Rivas}, Jesus and Duran-Ledezma, {Angel A.} and Alejandro Gonzalez-Cisneros and Miguel Garc{\'i}a-Rocha and Diego Esparza",

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year = "2021",

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day = "15",

doi = "10.1016/j.matlet.2021.129392",

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T1 - Dominant non-radiative recombination in perovskite CsPbBr3-xIx quantum dots

AU - Solis, Omar E.

AU - Manuel Rivas, Jesus

AU - Duran-Ledezma, Angel A.

AU - Gonzalez-Cisneros, Alejandro

AU - García-Rocha, Miguel

AU - Esparza, Diego

PY - 2021/4/15

Y1 - 2021/4/15

N2 - Colloidal perovskite (cesium lead bromide-iodide) quantum dots (PQDs) with different iodine concentration were prepared. These PQDs show excellent optical properties with high light absorption and high photoluminescence. Light absorption is in the range between 500 and 550 nm and extending into the ultraviolet. The photoluminescence spectra show peaks from 490 to 675 nm. Charge carrier lifetime measurements, obtained with the time-resolved photoluminescence technique, indicate that the dominant mechanisms for recombination are the non-radiative recombination processes. Finally, increasing the iodine content, increases defect concentration in the PQDs.

AB - Colloidal perovskite (cesium lead bromide-iodide) quantum dots (PQDs) with different iodine concentration were prepared. These PQDs show excellent optical properties with high light absorption and high photoluminescence. Light absorption is in the range between 500 and 550 nm and extending into the ultraviolet. The photoluminescence spectra show peaks from 490 to 675 nm. Charge carrier lifetime measurements, obtained with the time-resolved photoluminescence technique, indicate that the dominant mechanisms for recombination are the non-radiative recombination processes. Finally, increasing the iodine content, increases defect concentration in the PQDs.

KW - Non-radiative recombination

KW - Perovskite quantum dots

KW - TRPL

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DO - 10.1016/j.matlet.2021.129392

M3 - Artículo

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VL - 289

JO - Materials Letters

JF - Materials Letters

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