Temperature-insensitive persistent luminescence in the highly emissive Cs2CdCl4 ruddlesden-popper perovskite for advanced multifunctional applications

Chemical Engineering Journal, Journal Year: 2025, Volume and Issue: unknown, P. 163346 - 163346

Published: May 1, 2025

Language: Английский

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The Importance of Metal Ion Impurity Bands in the Photoluminescence of Halide Double Perovskites

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

Published: March 25, 2025

Abstract Double perovskite halides are attracting considerable attention due to their applications in solar cells and photovoltaics. It is observed that many (more than 20) publications top journals have associated spectral features emission the region at 460–470 nm with “pristine” materials. This leads not only false observations but also incorrect conclusions concerning transformation of dark into bright excitons or boosting self‐trapped exciton (STE) emission. The use phrase STE commented upon. Most commonly, spectra present correspond those antimonate (III) ion, Sb 3+ . should be interpreted terms s p – 2 orbital transitions rather excitonic transitions. compounds Cs NaRECl 6 (RE = Y, Gd) synthesized by two major methods, namely: evaporation hydrothermal syntheses, for various rare earth starting materials, order demonstrate effect antimony contamination. Contamination Mn 2+ ion found samples double susceptible attack moisture. study emphasizes need check sample synthesis purity carefully monitor integrity

Language: Английский

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Phase Evolution Extension of Cu₂ZnSn(S,Se)₄ Absorber Boosting the Efficiency of Kesterite Solar Cells to 14.99%

ACS Energy Letters, Journal Year: 2025, Volume and Issue: unknown, P. 2761 - 2769

Published: May 14, 2025

Language: Английский

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Lead‐Free Rare‐Earth Based Halide Double Perovskites: From Fundamentals, Progress to Perspectives

Laser & Photonics Review, Journal Year: 2025, Volume and Issue: unknown

Published: May 19, 2025

Abstract Lead‐free halide double perovskites are rapidly gaining prominence as a nontoxic, highly stable, and versatile alternative to traditional lead‐based perovskites, notable for their superior optoelectronic properties. Among these, rare‐earth‐based (RHDPs) notably stand out. Comprising fifteen lanthanide elements with distinctive electron configurations of [Xe] 4f n−1 5d 0−1 6s 2 ( n = 1–15), alongside the group‐IIIB Yttrium (Y) Scandium (Sc), rare‐earth (RE) exhibit great potential. These 17 RE ions (Sc 3+ , Y La –Lu ) offer vast landscape crafting numerous RHDPs, poised properties that surpass diversify beyond current perovskite standards. Key functionality unique luminescence driven by self‐trapped exciton (STE) recombination, 4f→4f 5d→4f transitions, enabling applications in visible infrared light emission through downshifting up‐conversion. This review thoroughly articulates foundational including structural‐property relationships, synthesis methods, optical characteristics, durability. It highlights recent advancements across range fields such near‐infrared emitting diodes (Vis&NIR LEDs), sensors, anti‐counterfeiting technologies. Additionally, discusses prevailing challenges associated RHDP materials applications, offering insights future directions.

Language: Английский

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Pb2+-Doped CsCdBr3 Halide Perovskite for Low Temperature Multimode Anti-Counterfeiting

Ceramics International, Journal Year: 2025, Volume and Issue: unknown

Published: May 1, 2025

Language: Английский

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Rational synthesis of Eu3+ and Yb3+ single −doped and co-doped Ba0.5Sr0.5TiO3 phosphors for dynamic anti-counterfeiting and fingerprint recognition applications

Journal of Photochemistry and Photobiology A Chemistry, Journal Year: 2025, Volume and Issue: unknown, P. 116519 - 116519

Published: June 1, 2025

Language: Английский

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