Effects of Polymer Matrix and Atmospheric Conditions on Photophysical Properties of a Cesium Lead Bromide (CsPbBr3) Perovskite Quantum Dot DOI
Jaesang Yu,

Jinwoong Jo,

Hyeyoung Joung

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 16(1), P. 384 - 395

Published: Dec. 31, 2024

Understanding the environment-dependent stability and photoluminescence (PL) properties of advanced perovskite materials remains a challenge with conflicting views. Herein, we investigated influence host matrix (poly(methyl methacrylate) (PMMA) polystyrene (PS)) atmospheric conditions (ambient N2) on PL CsPbBr3 quantum dot (PQD) using single-particle spectroscopy. Despite same blinking mechanism, PQD were considerably affected by environmental conditions. The charge trapping detrapping rates lower higher, respectively, under ambient atmosphere than N2 owing to surface defect passivation oxygen. frequency rate decomposition higher in PMMA PS an atmosphere. achieved superior encapsulation its affinity toward hydrophobic ligands because aromatic rings, thereby protecting from moisture thus inhibiting decomposition.

Language: Английский

Evidence of Carrier Diffusion between Emission States in CdSe/ZnS Core-Shell Quantum Dots: A Comprehensive Investigation Combining Fluorescence Lifetime Correlation Spectroscopy (FLCS) and Single Dot Photoluminescence Studies DOI

Debopam Acharjee,

Mrinal Kanti Panda,

Asit Baran Mahato

et al.

Nanoscale, Journal Year: 2024, Volume and Issue: unknown

Published: Jan. 1, 2024

At low excitation power, band-edge trap states cause blinking in CdSe/ZnS QDs, showing linear FLID plot. high is driven by both Auger and recombination, leading to a complex pattern.

Language: Английский

Citations

2
Investigation of Carrier Dynamics in CdSe/ZnS Core–Shell Quantum Dots via Scanning Fluorescence Correlation Spectroscopy DOI

Asit Baran Mahato,

Debopam Acharjee,

Mrinal Kanti Panda

et al.

The Journal of Physical Chemistry C, Journal Year: 2024, Volume and Issue: 128(39), P. 16588 - 16596

Published: Sept. 24, 2024

Language: Английский

Citations

1
Effects of Polymer Matrix and Atmospheric Conditions on Photophysical Properties of a Cesium Lead Bromide (CsPbBr3) Perovskite Quantum Dot DOI
Jaesang Yu,

Jinwoong Jo,

Hyeyoung Joung

et al.

The Journal of Physical Chemistry Letters, Journal Year: 2024, Volume and Issue: 16(1), P. 384 - 395

Published: Dec. 31, 2024

Understanding the environment-dependent stability and photoluminescence (PL) properties of advanced perovskite materials remains a challenge with conflicting views. Herein, we investigated influence host matrix (poly(methyl methacrylate) (PMMA) polystyrene (PS)) atmospheric conditions (ambient N2) on PL CsPbBr3 quantum dot (PQD) using single-particle spectroscopy. Despite same blinking mechanism, PQD were considerably affected by environmental conditions. The charge trapping detrapping rates lower higher, respectively, under ambient atmosphere than N2 owing to surface defect passivation oxygen. frequency rate decomposition higher in PMMA PS an atmosphere. achieved superior encapsulation its affinity toward hydrophobic ligands because aromatic rings, thereby protecting from moisture thus inhibiting decomposition.

Language: Английский

Citations

0