IEEE Electron Device Letters, Journal Year: 2024, Volume and Issue: 45(10), P. 1867 - 1870
Published: Aug. 20, 2024
Language: Английский
Nano Letters, Journal Year: 2024, Volume and Issue: 24(12), P. 3661 - 3669
Published: Feb. 26, 2024
The lack of stability red perovskite nanocrystals (PeNCs) remains the main problem that restricts their patterning application. In this work, dual-ligand passivation strategy was introduced to stabilize PeNCs and inhibit halogen ion migration during high-voltage electrohydrodynamic (EHD) inkjet printing. as-printed arrays exhibit highest emisson intensity least blue shift compared with samples other strategies under a high electric field EHD Combining green PeNC inks, single-color tricolor color conversion layer were successfully printed, minimum pixel size 5 μm spatial resolution 2540 dpi. coordinate CsPbBrI
Language: Английский
Citations
18
Nano Letters, Journal Year: 2024, Volume and Issue: 24(12), P. 3719 - 3726
Published: March 14, 2024
Mixed-halide CsPb(Br/I)3 perovskite quantum dots (QDs) are regarded as one of the most promising candidates for pure-red light-emitting diodes (PeLEDs) due to their precise spectral tuning property. However, lead-rich surface these QDs usually results in halide ion migration and nonradiative recombination loss, which remains a great challenge high-performance PeLEDs. To solve above issues, we employ chelating agent 1,4,7,10-tetraazacyclododecane-1,4,7,10-tetraacetic acid hydrate (DOTA) polish meanwhile introduce new ligand 2,3-dimercaptosuccinic (DMSA) passivate defects QDs. This synchronous post-treatment strategy high-quality with suppressed an improved photoluminescence yield, enables us fabricate spectrally stable PeLEDs peak external efficiency 23.2%, representing best performance based on mixed-halide reported date.
Language: Английский
Citations
17
Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)
Published: Aug. 2, 2024
Despite the promising candidacy of perovskite nanocrystals for light-emitting diodes, their pure red electroluminescence is hindered by low saturated luminance, severe external quantum efficiency roll-off, and inferior operational stability. Here, we report ultra-bright stable diodes manipulating Joule heat generation in nanocrystal emissive layer thermal management within device. Diphenylphosphoryl azide-mediated regulation surface synergistically enhances optical properties carrier transport layer, enabling reduced thus lowering working temperature. These merits inhibit ion migration CsPb(Br/I)3 film, excellent spectra Combined with highly thermal-conductive sapphire substrates implementation pulse-driving mode, exhibit an luminance 390,000 cd m-2, a peak 25%, suppressed half-life 20 hours, superior spectral stability 15 A cm-2.
Language: Английский
Citations
16
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
ACS Nano, Journal Year: 2025, Volume and Issue: unknown
Published: March 7, 2025
Light-emitting colloidal lead halide perovskite nanocrystals (PeNCs) are considered promising candidates for next-generation vivid displays. However, the operational stability of light-emitting diodes (LEDs) based on PeNCs is still lower than those polycrystalline films, which requires an understanding defect formation in PeNCs, both inside crystal lattice ("bulk") and at surface. Meanwhile, uncontrollable ion redistribution electrochemical reactions under LED operation can be severe, also related to bulk surface quality a well-designed device architecture boost carrier injection balance radiative recombination. In this review, we consider reconstruction by enhancing rigidity rationally selecting ligands. Degradation pathways applied voltage discussed, strategies avoid undesirable migration PeNC films. Subsequently, other critical issues hindering commercial application LEDs including toxicity Pb perovskites, scale-up deposition design active-matrix prototypes high-resolution modules.
Language: Английский
Citations
1
Materials Today, Journal Year: 2024, Volume and Issue: 75, P. 2 - 10
Published: April 9, 2024
Language: Английский
Citations
8
Journal of the American Chemical Society, Journal Year: 2024, Volume and Issue: 146(29), P. 19748 - 19755
Published: July 9, 2024
Hybrid halide perovskites are good candidates for a range of functional materials such as optical electronic and photovoltaic devices due to their tunable band gaps, long carrier diffusion lengths, solution processability. However, the instability in moisture/air, toxicity lead, rigorous reaction setup or complex postprocessing have been bottlenecks practical application. Herein, we present simultaneous configurational entropy design at A-sites, B-sites, X-sites typical (CHA)
Language: Английский
Citations
7
Energy & Environmental Science, Journal Year: 2024, Volume and Issue: 17(16), P. 5756 - 5794
Published: Jan. 1, 2024
This review comprehensively discusses the latest advances in surface matrix regulation of perovskite quantum dots and proposes opportunities challenges for high-performance solar cells.
Language: Английский
Citations
7
Naunyn-Schmiedeberg s Archives of Pharmacology, Journal Year: 2024, Volume and Issue: 397(12), P. 9633 - 9674
Published: July 29, 2024
Language: Английский
Citations
5
Journal of Materials Chemistry A, Journal Year: 2024, Volume and Issue: 12(34), P. 22417 - 22441
Published: Jan. 1, 2024
We provide an overview of recent advances in the structure, preparation, and optical properties various quantum dots (QDs), discuss strategies for improving electroluminescence performance response to current challenges QD research.
Language: Английский
Citations
5