Ultrastable CsPbBr3@CsPb2Br5@TiO2 Composites for Photocatalytic and White Light-Emitting Diodes DOI
Chen Zhang, Zeyu Wang,

Minqiang Wang

et al.

ACS Applied Materials & Interfaces, Journal Year: 2023, Volume and Issue: 15(29), P. 35216 - 35226

Published: July 16, 2023

Although cesium halide lead (CsPbX3, X = Cl, Br, I) perovskite quantum dots (QDs) have excellent photovoltaic properties, their unstable characteristics are major limitations to application. Previous research has demonstrated that the core-shell structure can significantly improve stability of CsPbX3 QDs and form heterojunctions at interfaces, enabling multifunctionalization materials. In this article, we propose a convenient method construct core-shell-structured materials, in which CsPbBr3@CsPb2Br5 micrometer crystals be prepared by controlling ratio Cs+/Pb2+ precursor reaction time. The materials exhibited enhanced optical properties provided for further postprocessing. Subsequently, CsPbBr3@CsPb2Br5@TiO2 composites were obtained coating layer dense TiO2 nanoparticles on surfaces through hydrolysis titanium precursors. According density functional theory (DFT) calculations experimental results, presence surface promoted delocalization photogenerated electrons holes, exhibit performance field photocatalysis. addition, due passivation defects CsPb2Br5 shells, luminous intensity white light-emitting diodes with only decayed 2%-3% high temperatures (>100 °C) when working 24 h.

Language: Английский

Stability challenges for the commercialization of perovskite–silicon tandem solar cells DOI
Leiping Duan, Daniel Walter, Nathan L. Chang

et al.

Nature Reviews Materials, Journal Year: 2023, Volume and Issue: 8(4), P. 261 - 281

Published: Jan. 9, 2023

Language: Английский

Citations

234
Over 15% Efficiency PbS Quantum‐Dot Solar Cells by Synergistic Effects of Three Interface Engineering: Reducing Nonradiative Recombination and Balancing Charge Carrier Extraction DOI
Chao Ding, Dandan Wang, Dong Liu

et al.

Advanced Energy Materials, Journal Year: 2022, Volume and Issue: 12(35)

Published: July 28, 2022

Abstract Lead sulfide colloidal quantum dot solar cells (CQDSCs), the next generation of photovoltaics, are hampered by non‐radiative recombination induced defects and an electron‐hole extraction imbalance. CQDSCs have three interfaces: CQD/CQD, electron transport layer (ETL)/CQD, CQD/hole (HTL), modifying one these interfaces does not fix problem stated above. Here, coordinated control passivation in PbS presented it is shown that synergistic effects may improve charge carrier balance minimize simultaneously. A facile method developed for epitaxially growing ultrathin perovskite shell on CQD surface to passivate CQD/CQD interface, resulting absorber layers with long diffusion lengths. With introduction organic films adjustable electrical characteristics, influence ETL/CQD interfacial modifications investigated. An excessive increase rate reduces fill factor efficiency, as discovered. Therefore a modified created at CQD/HTL interface promote hole extraction, which enhances passivates interface. Finally, exhibit power conversion efficiency 15.45%, record Pb chalcogenide CQDSCs.

Language: Английский

Citations

137
Emerging Trends of Carbon‐Based Quantum Dots: Nanoarchitectonics and Applications DOI Creative Commons
Xinwei Guan, Zhixuan Li, Xun Geng

et al.

Small, Journal Year: 2023, Volume and Issue: 19(17)

Published: Jan. 24, 2023

Carbon-based quantum dots (QDs) have emerged as a fascinating class of advanced materials with unique combination optoelectronic, biocompatible, and catalytic characteristics, apt for plethora applications ranging from electronic to photoelectrochemical devices. Recent research works established carbon-based QDs those frontline through improvements in design, processing, device stability. This review broadly presents the recent progress synthesis QDs, including carbon graphene graphitic nitride their heterostructures, well salient applications. The methods are first introduced, followed by an extensive discussion dependence performance on intrinsic properties nanostructures aiming present general strategies designing optimal performance. Furthermore, diverse presented, emphasis relationship between band alignment, charge transfer, improvement. Among discussed this review, much focus is given photo electrocatalytic, energy storage conversion, bioapplications, which pose grand challenge rational designs. Finally, summary existing challenges future directions elaborated.

Language: Английский

Citations

128
Tailoring solvent-mediated ligand exchange for CsPbI3 perovskite quantum dot solar cells with efficiency exceeding 16.5% DOI Creative Commons

Donglin Jia,

Jingxuan Chen,

Junming Qiu

et al.

Joule, Journal Year: 2022, Volume and Issue: 6(7), P. 1632 - 1653

Published: June 6, 2022

Language: Английский

Citations

108
Inorganic Halide Perovskite Quantum Dots: A Versatile Nanomaterial Platform for Electronic Applications DOI Creative Commons
Chien‐Yu Huang, Hanchen Li, Ye Wu

et al.

Nano-Micro Letters, Journal Year: 2022, Volume and Issue: 15(1)

Published: Dec. 29, 2022

Metal halide perovskites have generated significant attention in recent years because of their extraordinary physical properties and photovoltaic performance. Among these, inorganic perovskite quantum dots (QDs) stand out for prominent merits, such as confinement effects, high photoluminescence yield, defect-tolerant structures. Additionally, ligand engineering an all-inorganic composition lead to a robust platform ambient-stable QD devices. This review presents the state-of-the-art research progress on QDs, emphasizing electronic applications. In detail, QDs will be introduced first, followed by discussion synthesis methods growth control. Afterwards, emerging applications electronics, including transistors memories, presented. Finally, this provide outlook potential strategies advancing technologies.

Language: Английский

Citations

102
Self-assembled lead-free double perovskite-MXene heterostructure with efficient charge separation for photocatalytic CO2 reduction DOI
Zhipeng Zhang, Bingzhe Wang,

Hai‐Bing Zhao

et al.

Applied Catalysis B Environment and Energy, Journal Year: 2022, Volume and Issue: 312, P. 121358 - 121358

Published: March 31, 2022

Language: Английский

Citations

80
Inhibiting lattice distortion of CsPbI3 perovskite quantum dots for solar cells with efficiency over 16.6% DOI

Donglin Jia,

Jingxuan Chen,

Rongshan Zhuang

et al.

Energy & Environmental Science, Journal Year: 2022, Volume and Issue: 15(10), P. 4201 - 4212

Published: Jan. 1, 2022

A feasible ligand riveting strategy for perovskite quantum dots (PQDs) is reported to substantially inhibit the lattice distortion and simultaneously efficiently passivate surface of PQDs PQD solar cells with an efficiency over 16.6%.

Language: Английский

Citations

73
Carbon Dots: A Review with Focus on Sustainability DOI Creative Commons
Junkai Ren,

Henry Opoku,

Shi Tang

et al.

Advanced Science, Journal Year: 2024, Volume and Issue: unknown

Published: July 18, 2024

Abstract Carbon dots (CDs) are an emerging class of nanomaterials with attractive optical properties, which promise to enable a variety applications. An important and timely question is whether CDs can become functional sustainable alternative incumbent nanomaterials, notably inorganic quantum dots. Herein, the current CD literature comprehensively reviewed as regards their synthesis function, focus on sustainability aspects. The study quantifies why it that be synthesized biomass sole starting material free from toxic precious metals critical raw materials. It further describes analyzes employed pretreatment, chemical‐conversion, purification, processing procedures, highlights issues usage solvents, energy efficiency, safety waste management. specially shown many reported methods concerningly wasteful utilization non‐sustainable solvents energy. finally recommended future studies should explicitly consider discuss environmental influence selected material, generated byproducts, quantitative information required amounts consumables, provided evaluation presented in upscaled context.

Language: Английский

Citations

21
Metal nanowire-based transparent electrode for flexible and stretchable optoelectronic devices DOI
Yu Ding, Sixing Xiong, Lulu Sun

et al.

Chemical Society Reviews, Journal Year: 2024, Volume and Issue: 53(15), P. 7784 - 7827

Published: Jan. 1, 2024

This review provides the state-of-the-art solution-processed metal nanowire-based flexible transparent electrodes and their applications in optoelectronic devices.

Language: Английский

Citations

16
Low‐Dimensional Metal‐Halide Perovskites as High‐Performance Materials for Memory Applications DOI Creative Commons
Xinwei Guan,

Zhihao Lei,

Xuechao Yu

et al.

Small, Journal Year: 2022, Volume and Issue: 18(38)

Published: Aug. 21, 2022

Metal-halide perovskites have drawn profuse attention during the past decade, owing to their excellent electrical and optical properties, facile synthesis, efficient energy conversion, so on. Meanwhile, development of information storage technologies digital communications has fueled demand for novel semiconductor materials. Low-dimensional offered a new force propel developments memory field due physical properties associated with reduced dimensionality. In this review, mechanisms, as well stability performance low-dimensional perovskite memories, involving both molecular-level structure-level nanostructures, are comprehensively reviewed. The property-performance correlation is discussed in-depth, aiming present effective strategies designing devices based on class high-performance Finally, existing challenges future opportunities presented.

Language: Английский

Citations

69