Nanoscale Advances, Journal Year: 2024, Volume and Issue: 6(16), P. 4137 - 4148
Published: Jan. 1, 2024
Over more than a decade, lead halide perovskites (LHPs) have been popular as next-generation semiconductor for optoelectronics.
Language: Английский
Science, Journal Year: 2024, Volume and Issue: 385(6708), P. 554 - 560
Published: Aug. 1, 2024
Wide-bandgap (WBG) absorbers in tandem configurations suffer from poor crystallinity and weak texture, which leads to severe mixed halide-cation ion migration phase segregation during practical operation. We control WBG film growth insensitive compositions by nucleating the 3C before any formation of bromine-rich aggregates 2H phases. The resultant show improved strong texture with suppressed nonradiative recombination enhanced resistance various aging stresses. Perovskite/silicon solar cells achieve power conversion efficiencies 29.4% (28.8% assessed a third party) 25-square centimeter active area 32.5% 1-square area. These retained 98.3 90% original efficiency after 1301 800 hours operation at 25° 50°C, respectively, maximum point (AM 1.5G illumination, full spectrum, 1-sun) when encapsulated.
Language: Английский
Citations
28
Nano Energy, Journal Year: 2024, Volume and Issue: 124, P. 109504 - 109504
Published: March 16, 2024
Language: Английский
Citations
25
Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(16), P. 8095 - 8122
Published: Jan. 1, 2024
Reducing the dimensionality of lead-halide perovskite nanocrystals from 3D to 0D leads fascinating properties. This tutorial review discusses synthesis, optical properties and applications such strongly-confined quantum dots.
Language: Английский
Citations
24
Science Advances, Journal Year: 2025, Volume and Issue: 11(11)
Published: March 14, 2025
Perovskite quantum dots (QDs) show an excellent application perspective in semiconductor optoelectronic devices. However, problems of ligand loss during the growth, purification, film formation, and storage process always induce aggregation ripening QDs, adversely affecting QDs’ QD-based devices’ performance. Here, we use a bidentate molecule to control toward notable performance boost CsPbI 3 QDs. The strong interaction between QDs molecules maintains stable surface states inhibiting undesirable generation defects. We fabricate light-emitting diodes (LEDs) with maximum external efficiency (EQE) 26.0% at 686 nm operating half-life 10,587 hours initial radiance 190 mW sr −1 m −2 (equivalent luminance 100 cd for green perovskite LEDs). Benefiting from high storability target as-fabricated devices based on QD solution storing 1 month EQE 21.7% (20.3% months).
Language: Английский
Citations
4
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
Nano Letters, Journal Year: 2024, Volume and Issue: 24(18), P. 5631 - 5638
Published: April 26, 2024
Perovskite light-emitting diodes (PeLEDs) based on CsPb(Br/I)
Language: Английский
Citations
12
Chemical Society Reviews, Journal Year: 2025, Volume and Issue: unknown
Published: Jan. 1, 2025
This review summarizes the progress and provides perspectives on perovskite quantum dot photovoltaics, with a focus surface chemistry engineering, paving new direction for large-area low-cost PV technology to address major energy challenges.
Language: Английский
Citations
1
ACS Nano, Journal Year: 2025, Volume and Issue: unknown
Published: March 11, 2025
Mixed halide wide-bandgap (WBG) perovskites, widely used as a top-cell absorber in tandem solar cells, exhibit severe photoinduced phase segregation. A feasible solution is to exploit pure-iodide WBG essentially increasing Cs content instead of Br achieve bandgap widening. However, the efficiency pure-iodine perovskite cells (PSCs) reported so far has been inferior that typical mixed PSCs due complex nucleation and transition processes, leading poor crystallization quality high density defect states perovskites. Here, by combining lead thiocyanate (Pb(SCN)2) oleylamine hydrochloride (OAmCl) with Cs0.3DMA0.2MA0.5PbI3 precursor, homogeneous distribution obtained, resulting enhanced reduction excess source defects. With this approach, film improved along fewer surface-bulk defects well beneficial surface electronic properties. As result, deliver 21.55%, an extremely fill factor 86.03%, superior photostability. The target fundamentally free segregation under continuous light for 12 h (AM 1.5 G illumination, xenon lamp, 1 sun).
Language: Английский
Citations
1
Small Structures, Journal Year: 2024, Volume and Issue: 5(10)
Published: Aug. 4, 2024
Formation kinetics of metal nanoparticles are generally described via mass transport and thermodynamics‐based models, such as diffusion‐limited growth classical nucleation theory (CNT). However, monomers commonly assumed precursors, leaving the identity molecular intermediates their contribution to nanoparticle formation unclear. Herein, liquid phase transmission electron microscopy (LPTEM) reaction kinetic modeling utilized establish mechanisms discover during silver formation. Quantitative LPTEM measurements show that rate decreases while is nearly invariant with dose rate. Reaction simulations Ag 4 − follow a statistically similar dependence experimentally determined We experimental rates consistent attachment these species nanoparticles. The inconsistent CNT. A reaction‐limited mechanism proposed it demonstrated 2+ aggregation at millisecond time scales. throughput analysis uncovered decay pathways mediating intermediate concentrations. demonstrate power quantitative combined for establishing principal intermediates.
Language: Английский
Citations
7
ChemPlusChem, Journal Year: 2024, Volume and Issue: 89(5)
Published: Jan. 5, 2024
Zero-dimensional lead halide perovskite nanocrystals (NCs) exhibit size-dependent bandgap and carrier confinement compared to bulk counterparts due the quantum effect, making them essential for achieving wide-color-gamut displays, studying excitonic spin relaxation, constructing superlattices. Despite their promising potential, they face a variety of technical bottlenecks, such as insufficient color reproducibility, limited large-scale production, low stability, toxicity. An outline research roadmap is provided in review, which highlights key challenges developing NCs commercial applications.
Language: Английский
Citations
6