Few-Body Decay Dynamics in Colloidal CsPbI3 Quantum-Dot Clusters
Abstract
Colloidal perovskite quantum dots combine bright emission with the ability to self- assemble into closely spaced structures, enabling radiative dynamics to be studied from isolated emitters to few-dot clusters. Here, we characterize CsPbI3 perovskite quan- tum dots from isolated emitters to self-assembled clusters containing up to ten dots. We estimate the number of emitters in each cluster using a combination of photon autocorrelation, blinking statistics, and emission brightness. Compared with isolated dots, clusters containing two or more emitters exhibit biexponential decay, with a short lifetime that decreases with emitter number and an additional long-lived component. Photon-correlation Fourier spectroscopy shows that the single-dot emission remains far from the lifetime-limited regime. Nevertheless, we observe emitter-number-dependent decay dynamics even in this low-coherence regime. Together, these measurements es- tablish self-assembled perovskite quantum-dot clusters as a platform for studying how collective optical behavior emerges between the single-emitter and ensemble limits
Related
- Effect of Small Particle Interactions on Assembly of Binary Colloidal Clusters
- Structure and dynamics of interface around a quenched impurity in a colloidal liquid film
- Hydrodynamic memory in overdamped colloidal dynamics
- Near-surface colloidal dynamics in jammed and slipping microgel suspensions
- Discretization strategies for colloidal particles in multiparticle collision dynamics simulations
BibTeX
@misc{daggett2026fewbody,
title = {{Few-Body Decay Dynamics in Colloidal CsPbI3 Quantum-Dot Clusters}},
author = {Emma Daggett and Christian M. Lange and Nicholas Favate and Ankit Kundu and Ishita Agarwal and Arya D. Keni and Adhyyan S. Mansukhani and Christina W. Li and Libai Huang and Jonathan D. Hood},
howpublished = {arXiv},
year = {2026},
month = sep,
doi = {10.48550/arxiv.2609.07892},
eprint = {2609.07892},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2609.07892},
note = {CC BY 4.0},
}
RIS
TY - UNPB
TI - Few-Body Decay Dynamics in Colloidal CsPbI3 Quantum-Dot Clusters
AU - Emma Daggett
AU - Christian M. Lange
AU - Nicholas Favate
AU - Ankit Kundu
AU - Ishita Agarwal
AU - Arya D. Keni
AU - Adhyyan S. Mansukhani
AU - Christina W. Li
AU - Libai Huang
AU - Jonathan D. Hood
PY - 2026
DA - 2026/09/07
PB - arXiv
DO - 10.48550/arxiv.2609.07892
UR - https://arxiv.org/abs/2609.07892
AB - Colloidal perovskite quantum dots combine bright emission with the ability to self- assemble into closely spaced structures, enabling radiative dynamics to be studied from isolated emitters to few-dot clusters. Here, we characterize CsPbI3 perovskite quan- tum dots from isolated emitters to self-assembled clusters containing up to ten dots. We estimate the number of emitters in each cluster using a combination of photon autocorrelation, blinking statistics, and emission brightness. Compared with isolated dots, clusters containing two or more emitters exhibit biexponential decay, with a short lifetime that decreases with emitter number and an additional long-lived component. Photon-correlation Fourier spectroscopy shows that the single-dot emission remains far from the lifetime-limited regime. Nevertheless, we observe emitter-number-dependent decay dynamics even in this low-coherence regime. Together, these measurements es- tablish self-assembled perovskite quantum-dot clusters as a platform for studying how collective optical behavior emerges between the single-emitter and ensemble limits
ER -