Realizing full-spectrum LED lighting with a bright broadband cyan-green-emitting CaY2ZrGaAl3O12:Ce3+ garnet phosphor

Cao, Lina; Xü, Zhe; Chan, Jingming; Devakumar, Balaji; Huang, Xiaoyong

doi:10.1016/j.jlumin.2023.120015

Cited by 11 publications

(2 citation statements)

References 88 publications

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“…Thus, doping Ce 3+ into the oxide-based garnet structure is a reasonable way to construct high-performance cyan-green-emitting phosphors. However, several green-emitting garnet phosphors have been reported to be more effective under near-UV excitation, such as Ca 2 LaZr 2 Ga 3 O 12 :Ce 3+ , Ca 2 LaHf 2 Al 3 O 12 :Ce 3+ , Ca 2 YHf 2 Al 3 O 12 :Ce 3+ ,Tb 3+ , and CaY 2 ZrGaAl 3 O 12 :Ce 3+ , , which make them unsuitable for utilization with blue light LED chips with high conversion efficiency. Accordingly, the discovery of an appropriate bandwidth cyan-green-emitting phosphor with blue excitation that can cover both cyan and green spectral regions represents a significant advance.…”

Section: Introductionmentioning

confidence: 99%

Ce³⁺-Activated SrLu₂Al₃ScSiO₁₂ Cyan-Green-Emitting Garnet-Structured Inorganic Phosphor Materials toward Application in Blue-Chip-Based Phosphor-Converted Solid-State White Lighting

Chen,

Huang

2024

Inorg. Chem.

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Phosphor-converted white-light-emitting diodes (WLEDs) with superhigh color rendering index (CRI) are the ongoing pursuit of next-generation solid-state lighting. One of the most important challenges is the limited improvement in CRI on account of the absence of a cyan component in the typical commercial combination. Here, a bright broad-band cyan-greene m i t t i n g p h o s p h o r w i t h c u b i c g a r n e t s t r u c t u r e , SrLu 2 Al 3 ScSiO 12 :Ce 3+ (SLASSO:Ce 3+ ), was successfully reported, which can compensate for the absence of cyan cavity in the 480−520 nm blue-green emission region. With 439 nm blue-light irradiation, the as-fabricated SLASSO:Ce 3+ phosphor yields a broad-band cyangreen emission with the maximum emission peak positioned at 525 nm and an appropriate full width at half-maximum (fwhm) of 111 nm, capable of providing more cyan emission component without sacrificing green emission. Meanwhile, the optimal SLASSO:2% Ce 3+ phosphor features CIE color coordinates of (0.3254, 0.5470) with cyan-green hue, along with a high internal quantum efficiency of up to 93%. Additionally, thermal stability measurements at different temperatures reveal that the luminescence emission intensity of the proposed phosphor retains 44% of its original integral emission intensity at 423 K with respect to room temperature, while also demonstrating an excellent color stability (ΔE = 5.4 × 10 −3 ). This work shows that the highly efficient SLASSO:Ce 3+ garnet phosphor can be utilized as a potential cyan-green-emitting phosphor for filling the cyan gap, resulting in the construction of a high-quality warm WLED with high CRI for "human-centric" sunlight-like full-spectrum solid-state illumination.

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Section: Introductionmentioning

confidence: 99%

Ce³⁺-Activated SrLu₂Al₃ScSiO₁₂ Cyan-Green-Emitting Garnet-Structured Inorganic Phosphor Materials toward Application in Blue-Chip-Based Phosphor-Converted Solid-State White Lighting

Chen,

Huang

2024

Inorg. Chem.

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“…40,41 However, there are few studies on the green phosphor material itself. Currently, green converters and their luminescence properties are presented in Table S1 (ESI†), 6,41–54 and the luminescence properties and thermal stability of new green-light materials need to be studied and improved.…”

Section: Introductionmentioning

confidence: 99%

Ce:(Lu,Sr)₃(Al,Si)₅O₁₂ transparent ceramics for high-power white LEDs/LDs with ultra-high luminance saturation threshold

Zhang,

Sang,

Wei

et al. 2024

J. Mater. Chem. C

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Efficient broadband yellow-emitting Mg2.5Lu1.5Al1.5Si2.5O12:Ce3+ garnet phosphors for blue-light-pumped white light-emitting diodes

Chen,

Huang

2024

Ceramics International

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Realizing full-spectrum LED lighting with a bright broadband cyan-green-emitting CaY2ZrGaAl3O12:Ce3+ garnet phosphor

Cited by 11 publications

References 88 publications

Ce³⁺-Activated SrLu₂Al₃ScSiO₁₂ Cyan-Green-Emitting Garnet-Structured Inorganic Phosphor Materials toward Application in Blue-Chip-Based Phosphor-Converted Solid-State White Lighting

Ce³⁺-Activated SrLu₂Al₃ScSiO₁₂ Cyan-Green-Emitting Garnet-Structured Inorganic Phosphor Materials toward Application in Blue-Chip-Based Phosphor-Converted Solid-State White Lighting

Ce:(Lu,Sr)₃(Al,Si)₅O₁₂ transparent ceramics for high-power white LEDs/LDs with ultra-high luminance saturation threshold

Efficient broadband yellow-emitting Mg2.5Lu1.5Al1.5Si2.5O12:Ce3+ garnet phosphors for blue-light-pumped white light-emitting diodes

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Realizing full-spectrum LED lighting with a bright broadband cyan-green-emitting CaY2ZrGaAl3O12:Ce3+ garnet phosphor

Cited by 11 publications

References 88 publications

Ce3+-Activated SrLu2Al3ScSiO12 Cyan-Green-Emitting Garnet-Structured Inorganic Phosphor Materials toward Application in Blue-Chip-Based Phosphor-Converted Solid-State White Lighting

Ce3+-Activated SrLu2Al3ScSiO12 Cyan-Green-Emitting Garnet-Structured Inorganic Phosphor Materials toward Application in Blue-Chip-Based Phosphor-Converted Solid-State White Lighting

Ce:(Lu,Sr)3(Al,Si)5O12 transparent ceramics for high-power white LEDs/LDs with ultra-high luminance saturation threshold

Efficient broadband yellow-emitting Mg2.5Lu1.5Al1.5Si2.5O12:Ce3+ garnet phosphors for blue-light-pumped white light-emitting diodes

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Ce³⁺-Activated SrLu₂Al₃ScSiO₁₂ Cyan-Green-Emitting Garnet-Structured Inorganic Phosphor Materials toward Application in Blue-Chip-Based Phosphor-Converted Solid-State White Lighting

Ce³⁺-Activated SrLu₂Al₃ScSiO₁₂ Cyan-Green-Emitting Garnet-Structured Inorganic Phosphor Materials toward Application in Blue-Chip-Based Phosphor-Converted Solid-State White Lighting

Ce:(Lu,Sr)₃(Al,Si)₅O₁₂ transparent ceramics for high-power white LEDs/LDs with ultra-high luminance saturation threshold