Enhanced Hygrothermal Stability of In-Situ-Grown MAPbBr3 Nanocrystals in Polymer with Suppressed Desorption of Ligands DOI
Hui Fu, Kai Wang, Hao Wu

et al.

Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(33), P. 13467 - 13475

Published: Aug. 7, 2023

Currently, the intrinsic instability of organic-inorganic hybrid perovskite nanocrystals (PNCs) at high temperature and humidity still stands as a big barrier to hinder their potential applications in optoelectronic devices. Herein, we report controllable in-situ-grown PNCs polyvinylidene fluoride (PVDF) polymer with profoundly enhanced hygrothermal stability. It is found that introduced tetradecylphosphonic acid (TDPA) ligand enables significantly improved binding surface via strong covalently coordinated P-O-Pb bond, evidenced by density functional theory calculations X-ray photoelectron spectroscopy analyses. Accordingly, such could not only make efficient passivation defects but also enable remarkably suppressed desorption from under high-temperature environments. Consequently, photoluminescence quantum yield (PL QY) as-fabricated MAPbBr3-PNCs@PVDF film exhibits almost no decay after exposure air 333 K over 1800 h. Once temperatures are increased 293 353 K, PL intensity can be kept 88.6% initial value, much higher than without TDPA (i.e., 42.4%). Moreover, QY maintained above 50% 1560 h (65 days) harsh working conditions 90% humidity. As proof concept, as-assembled white light-emitting diodes display large color gamut 125% National Television System Committee standard, suggesting promising backlight

Language: Английский

Large‐Scale, Stretchable, Self‐Protective, and Multifunctional Perovskite Luminescent Filament with Ultra‐High Stability DOI
Liyan Yang, Yunpeng Liu,

Xiaofang Li

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(25)

Published: March 18, 2024

Abstract Lead halide perovskites possess great application potential in flexible displays and wearable optoelectronics owing to their prominent optoelectronic properties. However, the intrinsic instability upon moisture, heat, ultraviolet (UV) light irradiation hinders development application. In this work, an ultra‐stable CsPbX 3 (X = Cl, Br, I) perovskite luminescent filament (PLF) with high stretchability (≈2400%) luminescence performance (photoluminescence quantum yield (PLQY) of 24.5%, tunable emission spectrum, color purity) is introduced by a facile environmental‐friendly wet‐spinning technology via solvent extraction. Benefiting from situ encapsulation hydrophobic thermoplastic polyurethane (TPU) chelation Lewis base CO TPU acid Pb 2+ , CsPbBr PLF demonstrates ultra‐high photoluminescence (PL) stability when stored ambient air humidity circumstance, annealed at 50 °C, dipped water for 30 days, illuminated under 300 min, immersed organic solvents solutions pH 1‐13 5 respectively. Impressively, it retains 80% its initial PL after being recycled five times. Overall, promising prospects multifunctional applications, including dyes tensile strain sensing, pattern displays, secondary anti‐counterfeiting, hazard warning systems.

Language: Английский

Citations

12
Functional Ligand‐Modified Perovskite Quantum Dots for Stable Full‐Color Microarrays via Photopolymerization DOI Open Access
Yawen Li,

Abid Alam,

Tao Zhou

et al.

Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown

Published: Oct. 14, 2024

Abstract Integration of lead‐halide perovskite quantum dots (PQDs) into full‐color microarrays presents numerous advantages for micro‐LED displays. There is an urgent requirement a new design approach that simplifies the creation durable PQD/polymer composites to produce stable PQD microarrays. Here, mono‐2‐(methacryloyloxy)ethyl succinate (MMeS) utilized as functional ligand synthesize green MMeS‐modified CsPbBr 3 PQDs (M‐CPB PQDs). The subsequent photopolymerization M‐CPB with 1,6‐hexanediol diacrylate (HDDA) forms composite. This composite exhibits solid‐state photoluminescence yield 73.1%, and intensity retains 72% its original value after 17 days continuous immersion in water. Stable can be printed using ink containing PQDs, HDDA, diphenyl (2,4,6‐trimethylbenzoyl) phosphine oxide, n ‐dodecane via electrohydrodynamic jet printing situ polymerization under UV light irradiation. Full‐color patterns also generated red, green, blue PQDs. These findings highlight critical role functionalizing surface ligands improve their processability, thereby facilitating development

Language: Английский

Citations

2
Biocompatible Perovskite Nanocrystals with Enhanced Stability for White Light-Emitting Diodes DOI
Rui Zhang,

Ao Yan,

Haiyun Liu

et al.

ACS Applied Materials & Interfaces, Journal Year: 2024, Volume and Issue: 16(26), P. 34167 - 34180

Published: June 19, 2024

Recently emerged lead halide perovskite CsPbX3 (X = Cl, Br, and I) nanocrystals (PNCs) have attracted tremendous attention due to their excellent optical properties. However, the poor water stability, unsatisfactory luminescence efficiency, disappointing leakage, toxicity restricted practical applications in photoelectronics biomedical fields. Herein, a controllable encapsulated strategy is investigated realize PNCs/PVP @PMMA composites with superior properties biocompatibility. Additionally, synthesized CsPbBr3 CsPbBr0.6I2.4 PNCs/PVP@PMMA structures exhibit green red emissions maximal photoluminescence quantum yield (PLQY) of about 70.24% 98.26%, respectively. These show high emission stability after storage for 18 months, low cytotoxicity at PNC concentration 500 μg mL–1. Moreover, white light-emitting diode (WLED) devices based on mixtures are investigated, which warm-white light room temperature. A flexible manipulation method used fabricate emitters these composites, providing fantastic platform fabricating solid-state sources full-color displays.

Language: Английский

Citations

1
Enhanced Hygrothermal Stability of In-Situ-Grown MAPbBr3 Nanocrystals in Polymer with Suppressed Desorption of Ligands DOI
Hui Fu, Kai Wang, Hao Wu

et al.

Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(33), P. 13467 - 13475

Published: Aug. 7, 2023

Currently, the intrinsic instability of organic-inorganic hybrid perovskite nanocrystals (PNCs) at high temperature and humidity still stands as a big barrier to hinder their potential applications in optoelectronic devices. Herein, we report controllable in-situ-grown PNCs polyvinylidene fluoride (PVDF) polymer with profoundly enhanced hygrothermal stability. It is found that introduced tetradecylphosphonic acid (TDPA) ligand enables significantly improved binding surface via strong covalently coordinated P-O-Pb bond, evidenced by density functional theory calculations X-ray photoelectron spectroscopy analyses. Accordingly, such could not only make efficient passivation defects but also enable remarkably suppressed desorption from under high-temperature environments. Consequently, photoluminescence quantum yield (PL QY) as-fabricated MAPbBr3-PNCs@PVDF film exhibits almost no decay after exposure air 333 K over 1800 h. Once temperatures are increased 293 353 K, PL intensity can be kept 88.6% initial value, much higher than without TDPA (i.e., 42.4%). Moreover, QY maintained above 50% 1560 h (65 days) harsh working conditions 90% humidity. As proof concept, as-assembled white light-emitting diodes display large color gamut 125% National Television System Committee standard, suggesting promising backlight

Language: Английский

Citations

2