TY - JOUR
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
N1 - Publisher Copyright:
© 2021 Elsevier B.V.
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
UR - http://www.scopus.com/inward/record.url?scp=85100409742&partnerID=8YFLogxK
U2 - 10.1016/j.matlet.2021.129392
DO - 10.1016/j.matlet.2021.129392
M3 - Artículo
AN - SCOPUS:85100409742
SN - 0167-577X
VL - 289
JO - Materials Letters
JF - Materials Letters
M1 - 129392
ER -