Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 9, 2024
This review systematically summarized the synthesis approaches towards both polycrystals and nanocrystals, discussed crystal/electronic structure, luminescence principle, optimized strategies of lanthanide-based Cs 3 LnCl 6 metal halides.
Language: Английский
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 29, 2025
Abstract Light‐emitting diodes (LEDs) based on halide perovskite nanocrystals have attracted extensive attention due to their considerable luminescence efficiency, wide color gamut, high purity, and facile material synthesis. Since the first demonstration of LEDs MAPbBr 3 was reported in 2014, community has witnessed a rapid development performances. In this review, historical perspective is provided then comprehensive survey current strategies for high‐efficiency lead‐based LEDs, including synthesis optimization, ion doping/alloying, shell coating presented. Then basic characteristics emission mechanisms lead‐free perovskite‐related emitters environmentally friendly from standpoint different colors are reviewed. Finally, progress LED applications covered an outlook opportunities challenges future developments field provided.
Language: Английский
Citations
2
Coordination Chemistry Reviews, Journal Year: 2025, Volume and Issue: 528, P. 216425 - 216425
Published: Jan. 4, 2025
Language: Английский
Citations
1
Nano Letters, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 27, 2025
Ternary copper halides with an eco-friendly property have emerged as attractive candidates to replace toxic lead-containing perovskites for light-emitting diodes (LEDs), yet achieving long-wavelength electroluminescence remains unexplored. Herein, we report the first realization of orange-emitting LEDs (595 nm) based on nontoxic organic-inorganic PEA4Cu4I4 (PEA = β-phenylethylamine) films enabled by a nonionic surfactant poly(propylene glycol) bis(2-aminopropyl ether) (APPG) chemisorption. Experimental and theoretical analyses rationalize that APPG additive has strong chemisorption Cu-I framework within grain boundaries films, which not only improves film's morphology but also passivates iodine vacancy defects. Moreover, can raise ionization energy increase carrier mobility thereby balancing charge transport. Consequently, achieve orange made from APPG-treated showing external quantum efficiency 1.21%, operational stability treated device is greatly prolonged, resulting suppressed ion migration.
Language: Английский
Citations
0
Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160795 - 160795
Published: Feb. 1, 2025
Language: Английский
Citations
0
Angewandte Chemie, Journal Year: 2024, Volume and Issue: 136(43)
Published: July 27, 2024
Abstract Perovskite light‐emitting diodes (PeLEDs) that can be air‐processed promises the development of displaying optoelectronic device, while is challenged by technical difficulty on both active layer and hole transport (HTL) caused unavoidable humidity interference. Here, we propose validate that, planting polymer brush with tailored functional groups in inorganic HTL, provides unique bilateral embedded anchoring capable simultaneously addressing n phases crystallization rates as well deteriorated particulate surface defects HTL. Exemplified zwitterionic polyethyleneimine‐sulfonate (PEIS) present study, its implanting NiO x HTL offers abundant nuclei sites amino sulfonate balance growth rate different quasi‐2D perovskite films. Moreover, PEIS effectively nailed interfacial contact between , reduced leading to enhanced PLQY stability large‐area blue film ambient air. By virtue these merits, work achieves first demonstration PeLEDs large emitting area 1.0 cm 2 peak external quantum efficiency (EQE) 2.09 %, which comparable similar pure‐bromide fabricated glovebox.
Language: Английский
Citations
1
Angewandte Chemie International Edition, Journal Year: 2024, Volume and Issue: unknown
Published: July 27, 2024
Abstract Perovskite light‐emitting diodes (PeLEDs) that can be air‐processed promises the development of displaying optoelectronic device, while is challenged by technical difficulty on both active layer and hole transport (HTL) caused unavoidable humidity interference. Here, we propose validate that, planting polymer brush with tailored functional groups in inorganic HTL, provides unique bilateral embedded anchoring capable simultaneously addressing n phases crystallization rates as well deteriorated particulate surface defects HTL. Exemplified zwitterionic polyethyleneimine‐sulfonate (PEIS) present study, its implanting NiO x HTL offers abundant nuclei sites amino sulfonate balance growth rate different quasi‐2D perovskite films. Moreover, PEIS effectively nailed interfacial contact between , reduced leading to enhanced PLQY stability large‐area blue film ambient air. By virtue these merits, work achieves first demonstration PeLEDs large emitting area 1.0 cm 2 peak external quantum efficiency (EQE) 2.09 %, which comparable similar pure‐bromide fabricated glovebox.
Language: Английский
Citations
1
Advanced Functional Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Sept. 19, 2024
Abstract Despite the substantial progress in sky‐blue (480−495 nm) perovskite light‐emitting diodes (PeLEDs), pure‐blue PeLEDs (<480 merely show moderate performances. As a straightforward and effective facile way to obtain emission, bromide‐chloride mixed perovskites have received considerable attention. However, tricky issue of halide migration makes tough challenge achieve efficient with stable electroluminescence (EL) spectra. Herein, situ treatment Cl‐rich benzene phosphorus oxydichloride (BPOD) is proposed high‐quality by simultaneously enlarging bandgap, passivating vacancy defects, immobilizing ions through hydrolysis products chloride phenylphosphonic acid. result, highly‐performed maximum external quantum efficiency (EQE) 9.3% at 477 nm, an impressive lifetime 34.7 min 104 cd m −2 , very EL spectra are achieved, which superior conventional based on lead‐chloride precursor, representing one best performances for PeLEDs. Therefore, this work contributes feasible method
Language: Английский
Citations
1
ACS Nano, Journal Year: 2024, Volume and Issue: 18(44), P. 30421 - 30432
Published: Oct. 25, 2024
Lead-halide perovskite nanocrystals (NCs) have gained significant attention for their promising applications in lighting and display technologies. However, blue-emitting NCs struggled to match the high efficiency of red green counterparts. Moreover, many reported contain heavy metal lead (Pb), which poses risks human health environment. In this study, we synthesized rare-earth-based Cs3TmCl6 via hot injection method, exhibit a broadband blue emission at 440 nm. Combined experimental theoretical studies indicate that arises from self-trapped excitons due excited-state structural distortion [TmCl6]3– cluster. Furthermore, ultrafast dynamics charge carriers were analyzed using time-resolved photoluminescence transient absorption measurements. Encouraged by remarkable thermal, light, water stabilities NCs, as evidenced results, white light-emitting diode was further designed fabricated color converter. The device exhibits outstanding performance, achieving long half-lifetime 336 h large color-rendering index 87.0. Combining eco-friendly features facile synthesis mark breakthrough reliable emitter, showcasing future potential applications.
Language: Английский
Citations
1
Journal of Luminescence, Journal Year: 2024, Volume and Issue: unknown, P. 120908 - 120908
Published: Sept. 1, 2024
Language: Английский
Citations
0
ACS Nano, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 1, 2024
Ultraviolet photodetectors (UV PDs) based on microcrystals (MCs) have attracted extensive attention due to their outstanding detection performance. Nevertheless, precise manipulation of the MCs still remains challenging, which may hinder mass processing and performance improvement UV PDs. In this work, a single high-quality Cs
Language: Английский
Citations
0