Toxicity, Leakage, and Recycling of Lead in Perovskite Photovoltaics

Advanced Energy Materials, Год журнала: 2023, Номер 13(14)

Опубликована: Фев. 19, 2023

Abstract Perovskite solar cells (PSCs) have developed rapidly in recent years due to their excellent photoelectric properties. Among them, lead‐based perovskite photovoltaics shown great potential for both outdoor and indoor applications, whose power conversion efficiency stability are much higher than that of lead‐free PSCs. However, based on results vivo animal studies, Kyoto Encyclopedia Genes Genomes annotations pathway analysis microbiota metabolites influenced by lead, it has been proved lead exposure from PSCs probably causes systematic toxicity human body. For the purpose reducing leakage, some methods mainly polymer resin protective layers self‐healing encapsulation introduced, which can increase capture rate up 95% under harsh conditions. Eventually, devices will still face damage obsolescence, accompanied leakage into environment. Comprehensive recycling strategies necessary solve this problem root also shorten energy payback time further transformation upgrading green energy. The vertical in‐depth collaborative strategy prevention comprehensive would provide an environmentally‐friendly guarantee final large‐scale market photovoltaics.

Язык: Английский

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Recent Progress in Responsive Structural Color

The Journal of Physical Chemistry Letters, Год журнала: 2022, Номер 13(13), С. 2885 - 2900

Опубликована: Март 25, 2022

Structural color has been regarded as an ideal alternative to pigments because of the advantages environmental friendliness, resistance fading, and dynamic regulation. Responsive structural can give real-time visible feedback external stimuli thus great prospects in many applications, such displays, sensing, anticounterfeiting, information storage, healthcare monitoring. In this Perspective, we elucidate basic concepts, controllable fabrications, promising applications responsive colors. particular, systematically summarize general regulation mode all kinds systems. First, introduce chromogenic structures well modes color. Second, present fabrication methods patterned Then, systems are highlighted detail. Finally, existing challenges future perspectives on

Язык: Английский

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Strong Self‐Trapped Exciton Emission and Highly Efficient Near‐Infrared luminescence in Sb³⁺‐Yb³⁺ Co‐doped Cs₂AgInCl₆ Double Perovskite

Advanced Functional Materials, Год журнала: 2023, Номер 33(13)

Опубликована: Фев. 7, 2023

Abstract Yb 3+ doped lead‐free double perovskites (DPs) with near‐infrared (NIR)‐emitting have attracted extensive attention due to their wide application prospects. Unfortunately, they still suffer from weak NIR emission undesirable resonance energy transfer between the sensitizers and ions. Herein, a new effective NIR‐emitting DP is developed by co‐doping Sb into Cs 2 AgInCl 6 . Experiments theoretical calculations reveal that induced ions, self‐trapped excitation (STE) intensity of greatly enhanced 240 times, STE shifts 600 nm 660 nm, which contributes larger spectral overlap absorption As result, absolute photoluminescence quantum yield reaches an unprecedented 50% in DPs via high‐efficiency sensitization (>30%). The excellent optical performance : Sb, high ambient, thermal light stability makes it suitable for night‐vision devices. Moreover, ingenious dual‐modal information encryption based on combination visible fluorescence printing patterns utilizing respectively successfully demonstrated. This study provides inspiration designing highly efficient Ln ‐doped illustrates great potential versatile optoelectronic applications.

Язык: Английский

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Moisture-Induced reversible structure conversion of Zero-Dimensional organic cuprous bromide hybrids for multiple photoluminescent anti-Counterfeiting, information encryption and rewritable luminescent paper

Chemical Engineering Journal, Год журнала: 2023, Номер 458, С. 141436 - 141436

Опубликована: Янв. 13, 2023

Язык: Английский

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Multimodal luminescence in Pr3+ single-doped Li2CaSiO4 phosphor for optical information storage and anti-counterfeiting applications

Chemical Engineering Journal, Год журнала: 2023, Номер 474, С. 145886 - 145886

Опубликована: Сен. 9, 2023

Язык: Английский

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Erasable, Rewritable, and Reprogrammable Dual Information Encryption Based on Photoluminescent Supramolecular Host–Guest Recognition and Hydrogel Shape Memory

Advanced Materials, Год журнала: 2023, Номер 35(40)

Опубликована: Июнь 26, 2023

Information encryption technologies are very important for security, health, commodity, and communications, etc. Novel information mechanisms materials desired to achieve multimode reprogrammable encryption. Here, a supramolecular strategy is demonstrated multimodal, erasable, reprogrammable, reusable by reversibly modulating fluorescence. A butyl-naphthalimide with flexible ethylenediamine functionalized β-cyclodextrin (N-CD) utilized as fluorescent responsive ink printing or patterning on polymer brushes dangling adamantane group grafted hydrogels. The photoluminescent naphthalimide moiety bonded β-CD entrapped in the cavity. Its fluorescence highly weakened cavity recovers after being expelled from competing guest molecule emit bright green photoluminescence under UV. Experiments theoretical calculations suggest π-π stacking ICT primary mechanism naphthalimides assembly fluorescence, which can be quenched through insertion of conjugated molecules recover removing insert. Such reversible quenching recovering used repeated writing, erasing, re-writing information. Supramolecular recognition hydrogel shape memory further combined dual-encryption. This study provides novel develop smart improved security broad applications.

Язык: Английский

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Dynamic multicolor emissions of multimodal phosphors by Mn2+ trace doping in self-activated CaGa4O7

Nature Communications, Год журнала: 2024, Номер 15(1)

Опубликована: Апрель 13, 2024

Abstract The manipulation of excitation modes and resultant emission colors in luminescent materials holds pivotal importance for encrypting information anti-counterfeiting applications. Despite considerable achievements multimodal multicolor materials, existing options generally suffer from static monocolor under fixed external stimulation, rendering them vulnerability to replication. Achieving dynamic luminescence within a single material presents promising yet challenging solution. Here, we report the development phosphor exhibiting photoluminescence (PL) photo-thermo-mechanically responsive emissions through incorporation trace Mn 2+ ions into self-activated CaGa 4 O 7 host. resulting offers adjustable emission-color changing rates, controllable via re-excitation intervals photoexcitation powers. Additionally, it demonstrates temperature-induced color reversal anti-thermal-quenched emission, alongside reproducible elastic mechanoluminescence (ML) characterized by high mechanical durability. Theoretical calculations elucidate electron transfer pathways dominated intrinsic interstitial defects vacancies emission. dopants serve dual role stabilizing nearby introducing additional defect levels, enabling flexible multi-responsive luminescence. This developed facilitates evolutionary color/pattern displays both temporal spatial dimensions using readily available tools, offering significant promise anticounterfeiting multimode sensing

Язык: Английский

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Broad-Band Sensitization in Cr³⁺–Er³⁺ Co-Doped Cs₂AgInCl₆ Double Perovskites with 1.5 μm Near-Infrared Emission

Chemistry of Materials, Год журнала: 2023, Номер 35(14), С. 5291 - 5299

Опубликована: Июнь 30, 2023

Lanthanide (Ln3+)-doped metal halide perovskites with near-infrared (NIR) luminescence have received great attention; however, they suffer from low NIR efficiency, especially for 1.5 μm emission of Er3+ ions. Herein, a Cr3+–Er3+ co-doped Cs2AgInCl6 double perovskite is successfully synthesized using simple solution precipitation method. Besides broad-band 4T2 → 4A2 transition Cr3+ ions centered at 1010 nm, the sample exhibits an NIR-II peak 1540 nm assigned to 4I13/2 4I15/2 can be sensitized by that absorption ultraviolet region (250–900 nm). Excitingly, through assisted post-annealing treatment eliminate defect states, obtains unprecedented high photoluminescence quantum yield (PLQY) 57.5% (Er3+ emission: ∼29.0%), which highest value Ln3+-doped lead-free present. The admirable stability and dual bands pave way light sources pumped multicolor light-emitting diode (LED) chips in potential optical communication, night-vision, infrared imaging applications.

Язык: Английский

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Rare‐Earth‐Based Lead‐Free Halide Double Perovskites for Light Emission: Recent Advances and Applications

Advanced Functional Materials, Год журнала: 2024, Номер 34(44)

Опубликована: Май 22, 2024

Abstract The double perovskite material of Cs 2 NaRECl 6 ‐type, utilizing rare‐earth (RE) ions as trivalent element, has attracted widespread interest due to its unique optoelectronic properties and wide range applications. It displays rich optical properties, including visible infrared light emission through down‐shifting, well up‐conversion radiation‐induced emission. These exceptional make it a promising for devices such detectors, light‐emitting diodes, lasers energy storage batteries but also show advantages in anti‐counterfeiting technology imaging. In this article, the latest progress is reported challenges crystal structure, preparation, performance, various applications lead‐free halide (HLDPs) compounds. This outline prospective research directions existing materials, with aim facilitating discovery new HLDPs materials.

Язык: Английский

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Multisite Fine‐Tuning in Hybrid Cadmium Halides Enables Wide Range Emissions for Anti‐Counterfeiting

Angewandte Chemie International Edition, Год журнала: 2024, Номер 63(15)

Опубликована: Фев. 13, 2024

Abstract Achieving tunable emissions spanning the spectrum, from blue to near‐infrared (NIR) light, within a single component is formidable challenge with significant implication, particularly in tailoring multicolor luminescence for anti‐counterfeiting purposes. In this study, we demonstrate broad spectrum of emissions, covering red and extending into NIR light [BPy] 2 Cd X 4 : x Sb 3+ (BPy=Butylpyridinium; =Cl, Br; =0 0.08) through precise multisite structural fine‐tuning. Notably, CdBr manifest distinctive pattern, transitioning yellow tandem host further its homologous CdCl , resulting simultaneous presence intersecting independent emission colors. Detailed modulation chemical composition enables partial switching, facilitating creation diverse patterns by employing as phosphors. This study first time successfully implements several groups colors matrix via Such an effective strategy not only develops specific relationships between adjustable compositions, but also introduces cost‐effective straightforward approach achieving unique, high‐level, plentiful‐color multiple‐information‐storage labels advanced applications.

Язык: Английский

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