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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Efficient near‐infrared emission in lanthanum ion doped double perovskite Cs₂NaScCl₆ via Cr³⁺ sensitization under visible light excitation

EcoMat, Год журнала: 2024, Номер 6(3)

Опубликована: Янв. 25, 2024

Abstract Herein, we synthesized Cr 3+ /Ln (Er , Tm )‐codoped rare earth‐based Cs 2 NaScCl 6 double perovskite, and the near‐infrared emission of Ln can be excited by visible light through energy transfer (ET) from to . Moreover, there are two independent bands, which stems 4 T → A transition (970 nm) f‐f (1542 nm for Er 1220 ), respectively. Particularly, both compounds have ultra‐high photoluminescence quantum yield (PLQY) 60% 10%Cr /6%Er ‐codoped emission: ∼26%) 68% /4.5%Tm (Tm ∼56%), attributed ET efficiency similar ionic activity Sc allowing more dopants enter host lattice. Considering excellent stability samples, demonstrated /Tm in applications imaging night vision. Finally, reported /9%Er ‐tridoped further applied it optical thermometry. image

Язык: Английский

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Sb³⁺/Sm³⁺ Codoped Cs₂NaScCl₆ All-Inorganic Double Perovskite: Blue Emission of Self-Trapped Excitons and Red-Emission via Energy Transfer

Inorganic Chemistry, Год журнала: 2024, Номер 63(23), С. 10756 - 10766

Опубликована: Май 29, 2024

The lead-free halide perovskites possess nontoxicity and excellent chemical stability, whereas relatively weak luminescence intensity limits their potential in practical applications. Therefore, strengthening the expanding application fields are urgent tasks for development of perovskites. In this paper, antimony-doped Cs2NaScCl6 crystals synthesized by a solvothermal method emit bright, deep blue photoluminescence at 447 nm. (PL), excitation (PLE), absorption spectra demonstrate that Sb3+ doping effectively activate intrinsic "dark self-trapped exciton (STE)," leading to an impressive quantum yield (PLQY) value 78.31% 1% doping. Furthermore, remains above 92% compared with fresh sample without secondary phases detected even after 90 days under environmental conditions. To expand emission spectra, rare-earth Sm3+ is further incorporated into Cs2NaScCl6:1% crystals. results show Sb ions not only enhance STE but also serve as sensitizers boost red-light Sm3+, significant 500-fold increase red intensity. Finally, PLQY reaches stunning 86.78%. These findings provide valuable insights design ion-doped double perovskites, broadening various optoelectronic devices.

Язык: Английский

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Antimony doping towards fast digital encryption and decryption and high-efficiency WLED in zero-dimensional hybrid indium chlorides

Chemical Engineering Journal, Год журнала: 2024, Номер 494, С. 153060 - 153060

Опубликована: Июнь 12, 2024

Язык: Английский

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Developing an efficient energy transfer host for the controllable doping of Ho3+ in Cs2NaLuCl6 via Ag+/Bi3+ co-doping

Ceramics International, Год журнала: 2025, Номер unknown

Опубликована: Янв. 1, 2025

Язык: Английский

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Design of dual-mode optical temperature sensing in single-component white light emission Bi3+/Sb3+/Ho3+ tri-doped Cs2Ag0.2Na0.8LuCl6 double perovskites

Journal of Rare Earths, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

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Tunable Emission In Cs2NaGdCl6: Sb3+, Sm3+ Double Perovskite For Cool White LEDs And Anti-counterfeiting Applications

Journal of Alloys and Compounds, Год журнала: 2025, Номер unknown, С. 180269 - 180269

Опубликована: Апрель 1, 2025

Язык: Английский

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Efficient visible and near-infrared luminescence in lanthanide-doped double perovskites via tellurium sensitization

Journal of Rare Earths, Год журнала: 2025, Номер unknown

Опубликована: Апрель 1, 2025

Язык: Английский

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Dual-mode temperature sensing and fluorescent anti-counterfeiting utilizing Cs2NaErCl6: Yb3+, Dy3+ double perovskite microcrystals

Journal of Luminescence, Год журнала: 2025, Номер unknown, С. 121286 - 121286

Опубликована: Май 1, 2025

Язык: Английский

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NIR fluorescence of phenol-π-malononitrile derivatives achieved by extending π-bridge and unexpected intermolecular deprotonation

Dyes and Pigments, Год журнала: 2024, Номер 232, С. 112438 - 112438

Опубликована: Сен. 10, 2024

Язык: Английский

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