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

и другие.

The Journal of Physical Chemistry Letters, Год журнала: 2024, Номер 16(1), С. 384 - 395

Опубликована: Дек. 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.

Язык: Английский

Scalable Open‐Air Synthesis of Mg2+‐Doped Lead‐Free Cs3Cu2Cl5 Nanocrystals for High‐Performance Green LEDs DOI
Yang Tang,

Qingyu Xie,

Xuanming Zhang

и другие.

Laser & Photonics Review, Год журнала: 2025, Номер unknown

Опубликована: Апрель 25, 2025

Abstract Cs 3 Cu 2 Cl 5 nanocrystals (NCs) have emerged as promising optoelectronic materials owing to their efficient self‐trapped exciton (STE) emission. However, limited environmental stability has significantly constrained application in light‐emitting diodes (LEDs). In this work, a facile ambient‐air synthesis strategy is developed for Mg ⁺‐doped NCs that simultaneously addresses both and emission efficiency challenges. Remarkably, optimal ⁺ doping (20%) enhances the photoluminescence quantum yield (PLQY) from 28.69% 59.3%. Comprehensive theoretical investigations through density of states (DOS) calculations ab initio molecular dynamics (AIMD) simulations demonstrate induces bandgap narrowing enhanced radiative recombination while reinforcing crystal lattice stability. When integrated with UV LED chip, optimized enable fabrication high‐performance green LEDs exhibiting outstanding luminance (17 281 cd m − ) excellent color (CIE coordinates: 0.354, 0.518). This study provides not only practical synthetic approach stable copper halide but also valuable insights designing STE emitters applications.

Язык: Английский

Процитировано

0
Epitaxially Connected CsPbBr3–PbTe Perovskite-Chalcogenide Nanocrystal Heterostructures DOI

Rajdeep Das,

Souvik Banerjee, Diptam Nasipuri

и другие.

Chemistry of Materials, Год журнала: 2025, Номер unknown

Опубликована: Апрель 30, 2025

Язык: Английский

Процитировано

0
Enhancing the Luminescence Performance of Monodisperse Lead-Free Double Perovskite Cs2AgBiBr6 Nanocrystals Alloyed with Indium DOI
Lihong Qi, Song Wang, Hongyan Li

и другие.

The Journal of Physical Chemistry C, Год журнала: 2025, Номер unknown

Опубликована: Май 19, 2025

Язык: Английский

Процитировано

0
Fluorescence Lifetime Imaging Microscopy: Advances in Materials Science Research DOI
Fariyad Ali, Subhankar Kundu

Chemistry of Materials, Год журнала: 2025, Номер unknown

Опубликована: Май 27, 2025

Язык: Английский

Процитировано

0
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

и другие.

The Journal of Physical Chemistry Letters, Год журнала: 2024, Номер 16(1), С. 384 - 395

Опубликована: Дек. 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.

Язык: Английский

Процитировано

1