Hydrochromic Effect of Perovskite-Polymer Composites DOI
Rui Gong,

Feng Wang,

Jin Cheng

et al.

ACS Nano, Journal Year: 2024, Volume and Issue: 18(48), P. 33097 - 33104

Published: Nov. 18, 2024

Hydrochromic materials undergo magical color changes when interacting with water and are receiving widespread attention for their frontier applications such as sensing information security. The hydrochromic effect is observable in perovskite via the mechanism of water-induced fluorescence quenching. However, due to isolation, achieving a perovskite-polymer composite remains elusive, notwithstanding its importance potentially commercial-ready material. Here, we demonstrate perovskite-polymer-based porous nonsolvent-induced phase separation method, comprising FA2PbBr4/poly(vinylidene fluoride) (FA = formamidinium). naturally formed pores serve microchannels, facilitating moisture diffusion. penetrated induces transition material from nonfluorescent two-dimensional FA2PbBr4 fluorescent three-dimensional FAPbBr3. This work has developed composites, enabling various chromatic conceptually demonstrated custom-made fingerprint labels, quick response code anticounterfeiting encrypted document protections, water-ink inkjet printing.

Language: Английский

Perovskite Colloidal Nanocrystal Solar Cells: Current Advances, Challenges, and Future Perspectives DOI

Wenqiang Yang,

Seung‐Hyeon Jo,

Tae‐Woo Lee

et al.

Advanced Materials, Journal Year: 2024, Volume and Issue: 36(29)

Published: May 6, 2024

Abstract The power conversion efficiencies (PCEs) of polycrystalline perovskite (PVK) solar cells (SCs) (PC‐PeSCs) have rapidly increased. However, PC‐PeSCs are intrinsically unstable without encapsulation, and their efficiency drops during large‐scale production; these problems hinder the commercial viability PeSCs. Stability can be increased by using colloidal PVK nanocrystals (c‐PeNCs), which high surface strains, low defect density, exceptional crystal quality. use c‐PeNCs separates crystallization process from film formation process, is preponderant in fabrication. Consequently, has substantial potential to overcome challenges encountered when fabricating PC‐PeSCs. Research on nanocrystal‐based SCs (NC‐PeSCs) PCEs a level greater than those other quantum‐dot SCs, but not reached PC‐PeSCs; this inferiority significantly impedes widespread application NC‐PeSCs. This review first introduces distinctive properties c‐PeNCs, then strategies that been used achieve high‐efficiency Then it discusses detail persisting domain. Specifically, major solutions for NC‐PeSCs related short‐circuit current density J sc covered. Last, article presents perspective future research directions applications realm

Language: Английский

Citations

11
Zn doping and Mg doping manganese(II)-based perovskites toward sensor, rewritable paper and anti-counterfeiting applications DOI
Chun Sun, Junfang Cui,

Yiwei Zhao

et al.

Journal of Alloys and Compounds, Journal Year: 2025, Volume and Issue: unknown, P. 178551 - 178551

Published: Jan. 1, 2025

Language: Английский

Citations

0
Enhancing the Performance of Perovskite Environmental Sensors through the Synergistic Effect of the Natural Antioxidant DOI
Zhihao Huang,

Ziyuan Xie,

Chenyu Zeng

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 4, 2025

All-inorganic perovskite CsPbX3 is considered to be the next-generation optical material due its excellent properties and potential applications in optoelectronics. However, inherent ionic crystal property makes it susceptible interaction with moisture oxygen ambient atmosphere hinders development of stable devices. Herein, a natural nontoxic molecule, ascorbic acid (AA), introduced improve performance nanocrystals. Experimental results reveal that strong coordination between carbonyl groups undercoordinated Pb2+, together hydrogen bonding hydroxyl defects halide ions AA, suppress nonradiative recombination. In addition, synergistic effect C═O –OH structure exhibits stability bonding. Finally, demonstration humidity sensing based on perovskites has been presented. It shown sensor good sensitivity range 30%–80% relative humidity, detection limit 3.9% response time 46 s. This work provides low-cost, nontoxic, efficient modification approach demonstrates an easy way perovskite.

Language: Английский

Citations

0
Light driven CsPbI3 perovskite quantum dots core-shell transformation for Snapchat type anti-counterfeiting and encryption in 4D codes DOI
Yaxin Zhou, Liming Chen, Peng Zhang

et al.

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 160847 - 160847

Published: Feb. 1, 2025

Language: Английский

Citations

0
Enhancing the Optical Properties and Stability of CsPbBr3 Quantum Dots through Ligand Modification, Encapsulation, and Interaction with a Superhydrophobic Polymer DOI

Abid Alam,

Yawen Li,

Fuchun Ning

et al.

ACS Applied Materials & Interfaces, Journal Year: 2025, Volume and Issue: 17(11), P. 17026 - 17035

Published: March 5, 2025

Reducing the detachment of ligands on all-inorganic cesium lead bromide perovskite quantum dots (CsPbBr3 PQDs) presents a significant challenge to their practical applications, despite remarkable optoelectronic properties. Herein, novel strategy was introduced passivate surface defects CsPbBr3 PQDs by employing short-chain and functional groups within polymer matrix enhance processability. Guanidinopropanoic acid (GPA) employed as coligand alongside oleic oleylamine synthesize CsPbBr3-GPA via hot injection method. A nitrogen-containing, superhydrophobic mesoporous polymer, poly(divinylbenzene)-vinylimidazole (PDVB-Vim), utilized an innovative encapsulation material for PQDs, resulting in formation CsPbBr3-GPA@PDVB-Vim composite. were successfully protected from unfavorable external stimulation, such water UV light, protective PDVB-Vim. retains over 76% its initial photoluminescence intensity after 31 days 68% 96 h continuous exposure 365 nm irradiation at 15 mW·cm-2. The screen printing with methyl methacrylate, butyl styrene demonstrates potential stable light conversion wearable devices. This breakthrough may pave way further advancements using highly photoluminescent luminescent textiles applications.

Language: Английский

Citations

0
Patterning‐Induced Encapsulation of Stable Perovskite Quantum Dots with Controllable Morphology for Information Encryption DOI Open Access
Lijun Cheng,

Yang Yun,

Jimei Chi

et al.

Advanced Functional Materials, Journal Year: 2025, Volume and Issue: unknown

Published: March 13, 2025

Abstract Perovskite quantum dots (PQDs) are promising materials for photonic and optoelectronic devices, relying on efficient reliable patterning methods. However, the complex process poor stability of PQDs restrict their practical applications. Here, a patterning‐induced encapsulation strategy (PIE‐PQDs) is demonstrated directly into thin polystyrene (PS) film. The prepared PQDs@PS composite film displays excellent air (30d, 92%), UV resistance 85%), water (30d,88%). Notably, even in harsh environments such as acid/alkali/alcohol aqueous solution, still preserves high luminescence. A binary solvent engineering induced to precisely control distribution inside polymer film, resulting morphologically controllable microstructures optical information encryption. Patterned can be compatible with diverse substrates including silicon, glass, paper, plastic feature This method shows universal situ protection approach integrating flexible substrates, offering significant potential display, data storage, encryption, anti‐counterfeiting.

Language: Английский

Citations

0
Industrial‐Scale Silicon Heterojunction Photovoltaic Module Towards 25% Efficiency Enabled by High‐Quantum‐Yield CaSrSiO4:Ce3+ Inorganic Downshifting Materials DOI Open Access
Zehua Sun,

Zhengyue Xia,

Dengzhou Yan

et al.

Progress in Photovoltaics Research and Applications, Journal Year: 2025, Volume and Issue: unknown

Published: March 26, 2025

ABSTRACT The market uptake of silicon heterojunction (SHJ) solar modules is projected to increase rapidly, which expected play a significant role in future sustainability. However, major barrier the mass production SHJ power degradation under ultraviolet (UV) irradiation. Here, we reported 98.13% high‐quantum yield and highly reliable CaSrSiO 4 :Ce 3+ UV‐to‐blue–violet downshifting (UV‐DS) inorganic phosphor for photovoltaic applications, could minimize UV‐induced degradation, levelized cost energy, generation module waste. was synthesized via solid‐state reaction method, where Ce ions preferentially occupy 7‐coordinated Ca site. As proof concept, an outstanding output 776.2 W efficiency 24.99% were achieved on 3.1 m 2 industrial‐scale module. Only 2.49% observed after 180 kWh/m UV A statistical lifetime assessment based irradiance data Chinese geographical locations proven that UV‐DS encapsulants significantly enhanced long‐term stability modules, with better performance economic environmental characteristics. Our study offered blueprint designing sustainably strategically targeting geographic markets, mitigating one risks associated accelerating practical application.

Language: Английский

Citations

0
Transparent and flexible cellulose based luminescent film for multifunctional applications DOI
Cong Ma, Meiyun Zhang,

Jialong Xing

et al.

International Journal of Biological Macromolecules, Journal Year: 2025, Volume and Issue: unknown, P. 142883 - 142883

Published: April 1, 2025

Language: Английский

Citations

0
A Dual-Use Strategy of One Small Molecule for Passivation and Encapsulation to Achieve Highly Stable CsPbBr3 Nanocrystal Composites DOI
R.L. Meng, Yuchen Zhou, Yanan Wang

et al.

Materials Today Communications, Journal Year: 2025, Volume and Issue: unknown, P. 112568 - 112568

Published: April 1, 2025

Language: Английский

Citations

0
In Situ Synthesis of CsPbX3/Polyacrylonitrile Nanofibers with Water-Stability and Color-Tunability for Anti-Counterfeiting and LEDs DOI Open Access

Yinbiao Shi,

Xiaojia Su,

Xiaoyan Wang

et al.

Polymers, Journal Year: 2024, Volume and Issue: 16(11), P. 1568 - 1568

Published: June 1, 2024

Inorganic CsPbX3 (X = Cl, Br, I) perovskite quantum dots (PQDs) have attracted widespread attention due to their excellent optical properties and extensive application prospects. However, inherent structural instability significantly hinders practical despite outstanding performance. To enhance stability, an in situ electrospinning strategy was used synthesize CsPbX3/polyacrylonitrile composite nanofibers. By optimizing process parameters (e.g., halide ratio, voltage, heat treatment temperature), all-inorganic PQDs been successfully grown a polyacrylonitrile (PAN) matrix. During the process, rapid solidification of electrospun fibers not only effectively constrained formation large-sized but also provided effective physical protection for PQDs, resulting improvement water stability by minimizing external environmental interference. Even after storage over 100 days, maintained approximately 93.5% photoluminescence intensity. Through adjustment halogen elements, as-obtained nanofibers exhibited color-tunable luminescence visible light region, based on this, series multicolor anti-counterfeiting patterns were fabricated. Additionally, benefiting from performance, CsPbBr3/PAN film combined with red-emitting K2SiF6:Mn4+ (KSF) blue LED (460 nm), producing stable efficient WLED device color temperature around 6000 K CIE coordinates (0.318, 0.322). These results provide general approach synthesizing PQDs/polymer nanocomposites emission, thereby promoting applications multifunctional optoelectronic devices advanced anti-counterfeiting.

Language: Английский

Citations

3