Energy & Fuels, Journal Year: 2024, Volume and Issue: 38(18), P. 17343 - 17354
Published: Sept. 9, 2024
Language: Английский
Optical Materials, Journal Year: 2025, Volume and Issue: unknown, P. 116781 - 116781
Published: Feb. 1, 2025
Language: Английский
Citations
0
Inorganic Chemistry, Journal Year: 2025, Volume and Issue: unknown
Published: Feb. 14, 2025
Organic-inorganic hybrid Sn(IV)-based metal halides have received wide attention due to their excellent structural stability. However, realizing red-emitting with high stability and efficient photoluminescence (PL) efficiency remains challenging. Here, a stable organic-inorganic halide (C8H10O2N)2SnCl6 zero-dimensional (0D) structure has been obtained, which, however, displays poor PL properties the inert expression of Sn4+-4d10 electrons intrinsic indirect band gap feature. To address above challenges, Te4+ an active 5s2 lone pair is embedded into lattice (C8H10O2N)2SnCl6, as result, 5%Te4+-doped direct exhibits broadband deep-red emission (∼688 nm) (∼53%). Experimental calculated results reveal that embedding can effectively regulate facilitate transformation from structure, thereby leading radiative recombination. Benefiting merits, high-efficiency white light-emitting diode (WLED) fabricated using Te4+-doped ultrahigh color rendering index (CRI) up 94.5, suggesting great potential this material for solid-state lighting. This work provides significant insight design highly phosphors halides.
Language: Английский
Citations
0
Nature Communications, Journal Year: 2025, Volume and Issue: 16(1)
Published: April 5, 2025
Language: Английский
Citations
0
Nano Letters, Journal Year: 2025, Volume and Issue: unknown
Published: April 16, 2025
Tin-based halide perovskite light-emitting diodes (PeLEDs) emitting in the near-infrared region beyond 900 nm hold tremendous potential for applications night vision, biomedicine, and communications. However, rapid crystallization oxidation of Sn2+ tin-based perovskites pose significant challenges achieving stable PeLEDs with high performance. Here, we report an efficient all-inorganic CsSnI3-based PeLED by employing a multifunctional hesperetin additive to modulate kinetics inhibit process films. Hesperetin possesses hydroxyl groups alongside oxygen atoms offering lone electron pairs, which form hydrogen bonds I- strongly coordinate Sn2+, respectively, slowing down CsSnI3 resulting coverage density Importantly, coordination protects films from Sn2+-to-Sn4+ oxidation. Finally, demonstrate peak at 948 nm, external quantum efficiency 4.7%, half-lifetime over 11 h.
Language: Английский
Citations
0
Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown
Published: May 7, 2025
Abstract Tin‐halide perovskites (THPs) offer a promising alternative to lead‐halide (LHPs), addressing environmental concerns while providing excellent optoelectronic properties. However, the performance of THP light‐emitting diodes (LEDs) remains inferior their counterparts due challenges such as Sn 2 ⁺ oxidation, rapid crystallization, and high defect densities. Here, for first time, multifunctional Lewis‐base reducing ligand triphenylphosphine (TPP) is reported, which simultaneously suppresses 2+ oxidation passivates defects in 2D THPs TEA SnI 4 (TEA represents 2‐thienylethylamine). The P atom TPP, with its lone pair electrons on 3p orbital, has low electronegativity electron density, can effectively suppress oxidation. Furthermore, σ‐donation π‐conjugation effects from three phenyl groups TPP molecule enable it strongly coordinate , . These properties enhance stability THPs. When optimized films are implemented active layers LEDs, they exhibit narrow electroluminescence full‐width at half‐maximum 28 nm, Commission Internationale de l'Eclairage x‐coordinate exceeding 0.7, peak external quantum efficiency 10.12%, sevenfold higher than pristine devices. This work demonstrates potential molecular additives device tin‐based perovskites.
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2025, Volume and Issue: unknown
Published: May 8, 2025
Abstract Lead‐free tin‐based perovskites, specifically (4‐Cl‐PEA) 2 SnI 4 , possess significant potential for the development of high‐performance, robust neuromorphic imaging sensors, owing to their superior optoelectronic properties and compatibility with conventional complementary metal‐oxide‐semiconductor fabrication techniques silicon‐based readout circuits. However, excessive oxidation Sn 2+ remains a obstacle, leading suboptimal synaptic performance low resolution in sensors due increased recombination losses poor film uniformity. This study first demonstrates that introduction novel Sn→B donor–acceptor bonding interactions effectively suppresses oxidation, enhancing uniformity, reducing nonradiative recombination, improving plasticity. A vertical synapse diverse behaviors, attributed hole trapping detrapping at device interface. Additionally, enables applications associative learning, computation, letter encoding, handwritten digit recognition. Ultimately, integration silicon circuits results high‐resolution (32 × 32) array, one highest reported resolutions perovskite arrays. The improved uniformity boric acid‐added films significantly reduces photo response non‐uniformity, enhances resolution, improves memory capabilities. array successfully integrates sensing, storage, enabling advanced functionalities like recognition, memory, processing, surpassing image sensors.
Language: Английский
Citations
0
Advanced Materials, Journal Year: 2024, Volume and Issue: unknown
Published: Oct. 24, 2024
Abstract Metal halide perovskites have been identified as a promising class of materials for light‐emitting applications. The development lead‐based perovskite diodes (PeLEDs) has led to substantial improvements, with external quantum efficiencies (EQEs) now surpassing 30% and operational lifetimes comparable those organic LEDs (OLEDs). However, the concern over potential toxicity lead motivated search alternative that are both eco‐friendly possess excellent optoelectronic properties, lead‐free emerging strong contender. In this review, properties various emitters analyzed, particular emphasis on more well‐reported tin‐based variants. Recent progress in enhancing device through refined crystallization processes optimization configurations is also discussed. Additionally, remaining challenges examined, propose strategies may stable operation. Looking forward, future developments PeLEDs considered, including extension spectral range, adoption deposition techniques, exploration materials.
Language: Английский
Citations
3
Macromolecules, Journal Year: 2024, Volume and Issue: 57(10), P. 5073 - 5080
Published: May 15, 2024
Polyelectrolyte porous membranes (PPMs) have numerous applications in modern science and technology. Here, we describe a new platform for creating multifunctional supramolecular PPMs (SPPMs) by cross-linking of single-component homopoly(ionic liquid)s (PILs) containing hydrophilic anions (Br–, MBry–, M = Sn, Pb, Sb, Bi) with H2O molecules. With range experimental evidence support from theoretical calculations, show that the architecture is formed molecules-induced phase separation polycationic moieties homo-PILs between their polar apolar domains, which are cross-linked together multiple hydrogen (H)-bonding interactions. Furthermore, discover these SPPMs reversible, dynamic, wide-range color tuning, depending on excitation wavelength, as well ultrasensitive change toward humidity temperature stimuli, endowing them great promise color-on-demand applications. These findings, scalable green synthetic approach, bode advanced membrane materials based upon such SPPM systems.
Language: Английский
Citations
2
Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(22), P. 10335 - 10345
Published: May 20, 2024
Low-dimensional lead-halide hybrids are an emerging class of optical functional material but suffer the problems toxicity and poor air stability. Among lead-free metal halides, tin(IV)-based halides promising optoelectronic materials due to their robust structure environmental friendliness. However, photoluminescence (PL) properties poor, underlying mechanisms still elusive. Herein, a stable Sn4+-based halide hybrid, (C4H7N2)2SnCl6, was developed, which however exhibits PL at room temperature (RT) lattice defects crystal structure. To enhance its efficiency, Te4+ ion with stereoactive 5s2 lone pair has been introduced into lattice. As result, Te4+-doped (C4H7N2)2SnCl6 displays broadband orange emission (∼640 nm) efficiency ∼46% RT. Interestingly, shows triple bands 80 K, could be synergistic effect organic cations self-trapped state induced by Te4+. Additionally, high-performance white light-emitting diodes were prepared using revealing potential this for lighting applications. This study provides new insight mechanism metal-halide thus facilitates design development eco-friendly halides.
Language: Английский
Citations
2
Journal of Alloys and Compounds, Journal Year: 2024, Volume and Issue: 1005, P. 176113 - 176113
Published: Aug. 22, 2024
Language: Английский
Citations
2