Tunable Multicolor Emission and High Thermal Stability in Single‐Matrix Luminescent Crystals Based on Calcium Perovskites for Advanced Solid‐State Lighting Applications

Advanced Optical Materials, Год журнала: 2024, Номер 12(24)

Опубликована: Июнь 10, 2024

Abstract The development of environmentally friendly full‐inorganic luminescent materials with tunable emission properties and exceptional thermal stability is paramount importance for applications in optoelectronic devices, solid‐state lighting, anti‐counterfeiting technologies. In this study, a novel crystal based on calcium perovskites Cs 2 CaCl 4 ·2H O (CCCH) are explored using hydrothermal method. Simultaneous co‐doping CCCH Sn 2+ Mn yields the s‐p transition‐induced cyan light from d‐d yellow . It demonstrates effective energy transfer self‐trapped exciton (STE) matrix transition to , synergizing composite white lights colors. Furthermore, incorporation into introduces red shift blue remarkable enhancement intensity by factor 12 times. orbital Hamiltonian populations (─COHP) calculations revealed crucial role lattice stability, as evidenced decomposition temperature exceeding 305 °C CCCH:Sn ,Mn whereas 210 undoped matrix. This research provides comprehensive investigation crystal, holding significant promise practical technological advancements lighting

Язык: Английский

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Facile synthesis, multimode and tunable luminescence, and multifunctional applications of rare earth ions activated lead-free double perovskite crystals

Journal of Rare Earths, Год журнала: 2024, Номер unknown

Опубликована: Сен. 1, 2024

Язык: Английский

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Enhancement of NIR‐II Emission of Er3+ by Doping Fe3+ in Double Perovskites: Multimode Luminescence for Versatile Optoelectronic Applications

Angewandte Chemie International Edition, Год журнала: 2024, Номер unknown

Опубликована: Окт. 12, 2024

Abstract Erbium ions are commonly used to extend the photoelectric properties of metal halide perovskites from visible near‐infrared range. However, achieving high‐efficiency multimode luminescence in a single system is difficult due weak absorption associated with forbidden 4 f ‐4 transitions. In this study, unique strategy proposed adjust and enhance second region (NIR‐II) emission Cs 2 NaBiCl 6 by incorporating Fe 3+ ions. The as‐prepared material demonstrates reversible thermochromism, driven strong electron‐phonon coupling effect, exhibits tunable that can be adjusted altering excitation energy temperature. Notably, benefitting charge transfer transition ‐Cl − along influence doping on geometrical electronic structures, blue‐excitable (450 nm) NIR‐II around 1541 nm Er realized for first time, an intensity 16.7 times higher maximum photoluminescence quantum yield (PLQY) 22.5 %. This enhancement enables innovative applications such as two‐dimensional information encryption multi‐channel cooperative responses improved NIR imaging. study highlights potential optimizing perovskites, opening avenues advanced light emitting diodes (LEDs), thermometer, anti‐counterfeiting,

Язык: Английский

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Enhancement of NIR‐II Emission of Er3+ by Doping Fe3+ in Double Perovskites: Multimode Luminescence for Versatile Optoelectronic Applications

Angewandte Chemie, Год журнала: 2024, Номер unknown

Опубликована: Окт. 12, 2024

Abstract Erbium ions are commonly used to extend the photoelectric properties of metal halide perovskites from visible near‐infrared range. However, achieving high‐efficiency multimode luminescence in a single system is difficult due weak absorption associated with forbidden 4 f ‐4 transitions. In this study, unique strategy proposed adjust and enhance second region (NIR‐II) emission Cs 2 NaBiCl 6 by incorporating Fe 3+ ions. The as‐prepared material demonstrates reversible thermochromism, driven strong electron‐phonon coupling effect, exhibits tunable that can be adjusted altering excitation energy temperature. Notably, benefitting charge transfer transition ‐Cl − along influence doping on geometrical electronic structures, blue‐excitable (450 nm) NIR‐II around 1541 nm Er realized for first time, an intensity 16.7 times higher maximum photoluminescence quantum yield (PLQY) 22.5 %. This enhancement enables innovative applications such as two‐dimensional information encryption multi‐channel cooperative responses improved NIR imaging. study highlights potential optimizing perovskites, opening avenues advanced light emitting diodes (LEDs), thermometer, anti‐counterfeiting,

Язык: Английский

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High quality white light emission from Sb³⁺, Tb³⁺ and Mn²⁺ co-doped Cs₂NaScCl₆ double perovskites

Journal of Materials Chemistry C, Год журнала: 2024, Номер 13(5), С. 2247 - 2256

Опубликована: Дек. 6, 2024

The high quality white light was obtained by co-doping Sb 3+ , Tb Mn 2+ in Cs 2 NaScCl 6 double perovskite.

Язык: Английский

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