ZrBr4-Mediated Phase Engineering in CsPbBr3 for Enhanced Operational Stability of White-Light-Emitting Diodes DOI Creative Commons
Muhammad Amin Padhiar, Yongqiang Ji,

Jing Wang

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(9), P. 674 - 674

Published: April 28, 2025

The persistent operational instability of all-inorganic cesium lead halide (CsPbX3) perovskite nanocrystals (NCs) has hindered their integration into white-light-emitting diodes (WLEDs). This study introduces a transformative approach by engineering phase transition from CsPbBr3 NCs to zirconium bromide (ZrBr4)-stabilized hexagonal nanocomposites (HNs) through modified hot-injection synthesis. Structural analyses revealed that the ZrBr4-mediated transformation induced structurally ordered lattice with minimized defects, significantly enhancing charge carrier confinement and radiative recombination efficiency. resulting HNs achieved an exceptional photoluminescence quantum yield (PLQY) 92%, prolonged emission lifetimes, suppressed nonradiative decay, attributed effective surface passivation. WLEDs enabled breakthrough luminous efficiency 158 lm/W record color rendering index (CRI) 98, outperforming conventional CsPbX3-based devices. exhibited robust thermal stability, retaining over 80% initial intensity at 100 °C, demonstrated stability negligible PL degradation during 50 h continuous operation mA. Commission Internationale de l’Éclairage (CIE) coordinates (0.35, 0.32) validated pure white-light high chromatic fidelity. work establishes as paradigm-shifting material platform, addressing critical challenges in optoelectronics paving way for next-generation, high-performance lighting solutions.

Language: Английский

ZrBr4-Mediated Phase Engineering in CsPbBr3 for Enhanced Operational Stability of White-Light-Emitting Diodes DOI Creative Commons
Muhammad Amin Padhiar, Yongqiang Ji,

Jing Wang

et al.

Nanomaterials, Journal Year: 2025, Volume and Issue: 15(9), P. 674 - 674

Published: April 28, 2025

The persistent operational instability of all-inorganic cesium lead halide (CsPbX3) perovskite nanocrystals (NCs) has hindered their integration into white-light-emitting diodes (WLEDs). This study introduces a transformative approach by engineering phase transition from CsPbBr3 NCs to zirconium bromide (ZrBr4)-stabilized hexagonal nanocomposites (HNs) through modified hot-injection synthesis. Structural analyses revealed that the ZrBr4-mediated transformation induced structurally ordered lattice with minimized defects, significantly enhancing charge carrier confinement and radiative recombination efficiency. resulting HNs achieved an exceptional photoluminescence quantum yield (PLQY) 92%, prolonged emission lifetimes, suppressed nonradiative decay, attributed effective surface passivation. WLEDs enabled breakthrough luminous efficiency 158 lm/W record color rendering index (CRI) 98, outperforming conventional CsPbX3-based devices. exhibited robust thermal stability, retaining over 80% initial intensity at 100 °C, demonstrated stability negligible PL degradation during 50 h continuous operation mA. Commission Internationale de l’Éclairage (CIE) coordinates (0.35, 0.32) validated pure white-light high chromatic fidelity. work establishes as paradigm-shifting material platform, addressing critical challenges in optoelectronics paving way for next-generation, high-performance lighting solutions.

Language: Английский

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