Remote Control and Noninvasive Detection Enabled by a High-performance NIR pc-LED

Inorganic Chemistry, Journal Year: 2024, Volume and Issue: 63(5), P. 2655 - 2662

Published: Jan. 22, 2024

In an increasing manner, near-infrared phosphor-converted light-emitting diodes (NIR pc-LEDs) are considered to be exemplary light sources owing their notable attributes of elevated output power, economical nature, and exceptional portability. NIR phosphors critical components pc-LEDs. Herein, we report a novel blue excitable phosphor CaLu2ZrScAl3O12:Cr3+ (CLZSA:Cr3+) as crucial efficient broadband emitter. The CLZSA:Cr3+ displays intense emission peaking at 776 nm with full width half-maximum (fwhm) 140 nm. designed material also exhibits superior resistance thermal quenching, the intensity 423 K remains 80% that room temperature. constructed pc-LED device based on demonstrates high total power 68.4 mW drive current 100 mA, along photoelectric conversion efficiency 23.0%. Impressively, high-power pc-LEDs utilized for remote control non-invasive detection, resulting in excellent performance remarkable achievement.

Language: Английский

---

Comprehensive Review on Downconversion/Downshifting Silicate-Based Phosphors for Solar Cell Applications

ACS Omega, Journal Year: 2024, Volume and Issue: unknown

Published: April 6, 2024

Insufficient utilization of the solar spectrum in commonly employed cells, stemming from a spectral mismatch between and cell's band gap, poses barrier to enhancing cell efficiency. To overcome this challenge, downconverting silicate phosphors are cells capture infrared sunlight, thereby augmenting Downconversion/downshifting involves converting high-energy photons into one or two near-infrared (NIR) photons. Remarkably, silicate-based enhance sensitization, light scattering, antireflectivity, stability. This review delves various energy transfer mechanisms utilized phosphors. The key aspects covered encompass development that emit NIR their synthesis process. working principle its parameters discussed. impacts phosphor size, coverage, volume concentration, arrangement on performance also explored. Furthermore, study addresses several intriguing approaches for developing innovative performance.

Language: Английский

---

Bio fueled synthesis of Cr3+ doped V2O5 nanoparticles: Multifunctional applications in Photonics, Fingerprint visualization and Oxidative damage mitigation

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

Published: Feb. 1, 2025

Language: Английский

---

Highly efficient and thermally stable broadband near-infrared emitting garnet Ca₃Sc₂Ge₃O₁₂:Cr³⁺,Ce³⁺ phosphors for multiple pc-LED applications

Journal of Materials Chemistry C, Journal Year: 2023, Volume and Issue: 11(27), P. 9291 - 9299

Published: Jan. 1, 2023

The introduction of Ce 3+ improves the NIR luminescence properties CSGG:Cr by energy transfer and lattice distortion.

Language: Английский

---

Sr2MgWO6:Ni2+-A highly efficient and tunable photoluminescence near-infrared phosphor for NIR-II light source applications

Materials Today Chemistry, Journal Year: 2023, Volume and Issue: 34, P. 101827 - 101827

Published: Nov. 25, 2023

Language: Английский

---

Simultaneously Possessing High Quantum Efficiency and Thermal Robustness in a Near‐Infrared Emitting ZnAlB_(1‐x)Ga_xO₄:Cr³⁺ Phosphor

Laser & Photonics Review, Journal Year: 2024, Volume and Issue: unknown

Published: Aug. 3, 2024

Abstract Near‐infrared (NIR) phosphors are a vital component of phosphor‐converted light‐emitting diodes (pc‐LEDs), with simultaneous high quantum efficiency and thermal stability being essential attributes for optimal performance. In this paper, novel ZnAlB (1‐ x ) Ga O 4 :0.05Cr 3+ system is designed by gradually substituting B Ga. Surprisingly, significant enhancement in photoluminescence performance observed, reaching peak at = 1. Further development led to series ZnAlGaO : y Cr (ZAGO: phosphors, exhibiting variable full width half maximum (FWHM) ranging from 32 163 nm increasing content, attributed energy transfer between two emission centers. Among these, ZAGO:0.05Cr emerges as the phosphor, boasting internal/external 80%/34% FWHM 80 nm. Notably, phosphor demonstrates anti‐thermal quenching behavior (125.53% @ 423 K), its exceptional elucidated through defect level model. The fabricated NIR pc‐LEDs featuring ZAGO:Cr show great prospect multifunctional applications plant cultivation, night vision, non‐destructive analysis veins imaging.

Language: Английский

---

Abnormal spectral broadening of ordered-structure near-infrared phosphor La₂CaHfO₆:Cr³⁺

Journal of Materials Chemistry C, Journal Year: 2024, Volume and Issue: 12(28), P. 10532 - 10539

Published: Jan. 1, 2024

Near-infrared (NIR) phosphors play a key role in the preparation of NIR phosphor-converted light-emitting diodes (NIR pc-LEDs) for night vision, sensing and non-destructive detection, but how to search broadband still remains big challenge.

Language: Английский

---

Multiple lattice sites occupied AlTaO4:Cr3+ phosphor for luminescence ratiometric thermometry and NIR light source

Journal of Alloys and Compounds, Journal Year: 2023, Volume and Issue: 970, P. 172544 - 172544

Published: Oct. 16, 2023

Language: Английский

---

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

Journal of Alloys and Compounds, Journal Year: 2023, Volume and Issue: 973, P. 172927 - 172927

Published: Nov. 23, 2023

Language: Английский

---

Realization of Broadband Near-Infrared Emission with High Thermal Stability in YGa₃(BO₃)₄: Cr³⁺ Borate Phosphor

Inorganic Chemistry, Journal Year: 2023, Volume and Issue: 62(48), P. 19507 - 19515

Published: Nov. 17, 2023

As a key material for phosphor-converted light-emitting diodes (pc-LEDs) applications, broadband near-infrared (NIR) phosphors currently face poor thermal stability issues. In this work, we synthesized phosphor YGa3(BO3)4: Cr3+ (YGBO: Cr3+) with high stability. The YGBO: sample exhibits emission centered at 770 nm full width half-maximum (fwhm) of 2130 cm–1 under blue light excitation. Benefiting from the borate host crystal's strong structural rigidity, wide optical band gap, and weak electron–phonon coupling strength, demonstrates luminescence stability, corresponding intensity can maintain 80% 150 °C compared to room temperature. Furthermore, fabricated pc-LED device using chip phosphor, confirmed its application potential as source in spectral analysis fruit freshness.

Language: Английский

---