Near-Infrared LuCa₂ScZrGa₂GeO₁₂:Cr³⁺ Garnet Phosphor with Ultra-broadband Emission for NIR LED Applications

Inorganic Chemistry, Год журнала: 2023, Номер 62(27), С. 10772 - 10779

Опубликована: Июнь 27, 2023

Near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs), as a new generation of NIR lighting sources, have wide prospects in the areas food analysis and biological night vision imaging. Nevertheless, phosphors are still limited by short-wave narrowband emissions well low efficiency. Herein, series phosphors, LuCa2ScZrGa2GeO12:Cr3+ (LCSZGG:Cr3+), with broadband been developed first reported. At 456 nm excitation, optimized LCSZGG:0.005Cr3+ phosphor represents an ultra-broadband emission within range 650–1100 nm, peaking near 815 full width at half maximum 166 nm. Furthermore, possesses good internal quantum efficiency 68.75%, its integrated intensity 423 K retains about 64.17% that room temperature. By combining sample blue chip, pc-LED device is fabricated, which has excellent output power 37.88 mW photoelectric conversion 12.44% under 100 mA driving current. The aforementioned results demonstrate these LCSZGG:Cr3+ expected light sources.

Язык: Английский

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Broadband near-infrared double-perovskite phosphor Sr2ScTaO6:Cr3+, Yb3+ for NIR pc-LED applications

Ceramics International, Год журнала: 2023, Номер 49(20), С. 32860 - 32867

Опубликована: Авг. 2, 2023

Язык: Английский

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Near-infrared Cr³⁺-doped lead-free halide perovskite microcrystals for information encryption and temperature thermometry

Journal of Materials Chemistry C, Год журнала: 2024, Номер 12(13), С. 4627 - 4639

Опубликована: Янв. 1, 2024

Lead-free double perovskite materials have attracted lots of interest because they can be doped with luminescence activators to modify their optical characteristics and improve photoluminescence performances.

Язык: Английский

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Highly thermally stable SrLaMgTaO6: Cr3+ double-perovskite phosphors for night-vision applications

Ceramics International, Год журнала: 2024, Номер 50(16), С. 28707 - 28714

Опубликована: Май 12, 2024

Язык: Английский

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A novel near-infrared phosphor Li_1.6Mg_1.6Sn_2.8O₈:Cr³⁺ for near-infrared spectral analysis

Journal of Materials Chemistry C, Год журнала: 2024, Номер unknown

Опубликована: Янв. 1, 2024

A novel near-infrared broadband phosphor Li 1.6 Mg Sn 2.8 O 8 :Cr 3+ for spectroscopy with a peak at 860 nm and an FWHM of 187 nm.

Язык: Английский

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Remarkable role of B site regulation on a highly heat-resistant double-perovskite phosphor with versatile NIR utilizations

Chemical Engineering Journal, Год журнала: 2025, Номер unknown, С. 161635 - 161635

Опубликована: Март 1, 2025

Язык: Английский

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Cr³⁺‐Cr³⁺ Ion Pair Induced Fast Energy Migration in Cr³⁺ Doped Na‐β‐Al₂O₃ Ultra‐Wide Near‐Infrared Phosphors for NIR Spectroscopy Application

Laser & Photonics Review, Год журнала: 2023, Номер 18(3)

Опубликована: Дек. 16, 2023

Abstract Technological progress has promoted the development of ultra‐wide near‐infrared (NIR) luminescent materials as a new NIR light source. The emission in Na(Al,Ga) 11 O 17 :xCr 3+ (NAGO:xCr ) phosphors is achieved by constructing unique Cr ‐Cr ion pair confined structure. pairs can be observed at low concentration ions(x = 0.04), increase Ga would promote formation pairs, thereby effectively enhancing energy migration process from high‐energy ions to low‐energy ones. Herein, full width half maximum finely adjusted wide range 223 nm, while peaks shift 704 860 nm. NAGO:xCr exhibits longest‐wavelength known ‐doped galliates and aluminates phosphors. study further reveals inherent mechanism affect on photoluminescence properties for pairs. quantum efficiency optimal NaAl :0.004Cr (sharp emission) NaGa :0.02Cr (ultra‐wide samples reaches 87.6% 46.6% with high thermal stability (84.47% 67.52%@150 °C), respectively. comprehensive are excellent among similar property. Multifunctional applications agricultural production, quality inspection, imaging fields also demonstrated.

Язык: Английский

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Ultra-broadband near-infrared phosphor La2CaTa Zr(1-)O6:Cr3+ for phosphor-converted light-emitting diodes

Journal of Alloys and Compounds, Год журнала: 2023, Номер 965, С. 171459 - 171459

Опубликована: Июль 20, 2023

Язык: Английский

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A novel thermally-stable single-phase phosphor Ca2InTaO6:Dy3+ for NUV-excited white LEDs

Journal of Rare Earths, Год журнала: 2023, Номер 42(10), С. 1855 - 1864

Опубликована: Авг. 30, 2023

Язык: Английский

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Sr2(Ga/Al)TaO6:Cr3+ phosphor with tunable near-infrared emitting for light-emitting diodes and optical thermometer

Journal of Alloys and Compounds, Год журнала: 2023, Номер 973, С. 172927 - 172927

Опубликована: Ноя. 23, 2023

Язык: Английский

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