Yujia Wan, Peipei Dang, Dongjie Liu, Hongzhou Lian, Guogang Li, Jun Lin
{"title":"晶体工程公司为健康 LED 照明和显示屏开发超窄带青色发光 UCr4C4 型荧光粉","authors":"Yujia Wan, Peipei Dang, Dongjie Liu, Hongzhou Lian, Guogang Li, Jun Lin","doi":"10.1002/lpor.202400651","DOIUrl":null,"url":null,"abstract":"Narrow-band cyan-emitting materials for white light-emitting diode (wLED) application have shown great potential in increasing the maximum accessible display gamut and improving the color rendering of full-spectrum healthy lighting. However, the discovery of novel narrow-band cyan emitters with excellent luminescence performances remains challenging. Here, an ultra-narrow-band cyan-emitting Na<sub>5</sub>K<sub>3</sub>(Li<sub>3</sub>SiO<sub>4</sub>)<sub>8</sub>:Eu<sup>2+</sup> (N<sub>5</sub>K<sub>3</sub>:Eu<sup>2+</sup>) phosphor (λ<sub>em</sub> = 483 nm) with full width at half maximum (FWHM) of only 18 nm is developed from some typical UCr<sub>4</sub>C<sub>4</sub> frameworks phosphors by slightly modifying crystal structure and symmetry. Through controllable regulation of the ratio of Na and K from Na<sub>4</sub>K<sub>4</sub>(Li<sub>3</sub>SiO<sub>4</sub>)<sub>8</sub>:Eu<sup>2+</sup> (N<sub>4</sub>K<sub>4</sub>:Eu<sup>2+</sup>) and Na<sub>6</sub>K<sub>2</sub>(Li<sub>3</sub>SiO<sub>4</sub>)<sub>8</sub>:Eu<sup>2+</sup> (N<sub>6</sub>K<sub>2</sub>:Eu<sup>2+</sup>) to N<sub>5</sub>K<sub>3</sub>:Eu<sup>2+</sup>, the lattice sites forming shoulder peaks are further squeezed to generate the narrowest cyan emission. Moreover, the N<sub>5</sub>K<sub>3</sub>:Eu<sup>2+</sup> exhibits low photoluminescence thermal quenching (90%@150 °C) and high internal quantum efficiency (IQE) of 50%. The color rendering index of wLED for full-spectrum health lighting is enhanced from 92 to 94. Using this short-wavelength cyan emission instead of a part of the emission from a blue chip can effectively prevent “blue hazard”. This work provides basic principles for the design of ultra-narrow-band phosphors, thus achieving their applications in the fields of healthy lighting and eye-friendly display.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":null,"pages":null},"PeriodicalIF":9.8000,"publicationDate":"2024-06-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Crystallographic Engineering to Develop Ultra-Narrow-Band Cyan-Emitting UCr4C4-Type Phosphor for Healthy LED Lighting and Display\",\"authors\":\"Yujia Wan, Peipei Dang, Dongjie Liu, Hongzhou Lian, Guogang Li, Jun Lin\",\"doi\":\"10.1002/lpor.202400651\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Narrow-band cyan-emitting materials for white light-emitting diode (wLED) application have shown great potential in increasing the maximum accessible display gamut and improving the color rendering of full-spectrum healthy lighting. However, the discovery of novel narrow-band cyan emitters with excellent luminescence performances remains challenging. Here, an ultra-narrow-band cyan-emitting Na<sub>5</sub>K<sub>3</sub>(Li<sub>3</sub>SiO<sub>4</sub>)<sub>8</sub>:Eu<sup>2+</sup> (N<sub>5</sub>K<sub>3</sub>:Eu<sup>2+</sup>) phosphor (λ<sub>em</sub> = 483 nm) with full width at half maximum (FWHM) of only 18 nm is developed from some typical UCr<sub>4</sub>C<sub>4</sub> frameworks phosphors by slightly modifying crystal structure and symmetry. Through controllable regulation of the ratio of Na and K from Na<sub>4</sub>K<sub>4</sub>(Li<sub>3</sub>SiO<sub>4</sub>)<sub>8</sub>:Eu<sup>2+</sup> (N<sub>4</sub>K<sub>4</sub>:Eu<sup>2+</sup>) and Na<sub>6</sub>K<sub>2</sub>(Li<sub>3</sub>SiO<sub>4</sub>)<sub>8</sub>:Eu<sup>2+</sup> (N<sub>6</sub>K<sub>2</sub>:Eu<sup>2+</sup>) to N<sub>5</sub>K<sub>3</sub>:Eu<sup>2+</sup>, the lattice sites forming shoulder peaks are further squeezed to generate the narrowest cyan emission. Moreover, the N<sub>5</sub>K<sub>3</sub>:Eu<sup>2+</sup> exhibits low photoluminescence thermal quenching (90%@150 °C) and high internal quantum efficiency (IQE) of 50%. The color rendering index of wLED for full-spectrum health lighting is enhanced from 92 to 94. Using this short-wavelength cyan emission instead of a part of the emission from a blue chip can effectively prevent “blue hazard”. 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Crystallographic Engineering to Develop Ultra-Narrow-Band Cyan-Emitting UCr4C4-Type Phosphor for Healthy LED Lighting and Display
Narrow-band cyan-emitting materials for white light-emitting diode (wLED) application have shown great potential in increasing the maximum accessible display gamut and improving the color rendering of full-spectrum healthy lighting. However, the discovery of novel narrow-band cyan emitters with excellent luminescence performances remains challenging. Here, an ultra-narrow-band cyan-emitting Na5K3(Li3SiO4)8:Eu2+ (N5K3:Eu2+) phosphor (λem = 483 nm) with full width at half maximum (FWHM) of only 18 nm is developed from some typical UCr4C4 frameworks phosphors by slightly modifying crystal structure and symmetry. Through controllable regulation of the ratio of Na and K from Na4K4(Li3SiO4)8:Eu2+ (N4K4:Eu2+) and Na6K2(Li3SiO4)8:Eu2+ (N6K2:Eu2+) to N5K3:Eu2+, the lattice sites forming shoulder peaks are further squeezed to generate the narrowest cyan emission. Moreover, the N5K3:Eu2+ exhibits low photoluminescence thermal quenching (90%@150 °C) and high internal quantum efficiency (IQE) of 50%. The color rendering index of wLED for full-spectrum health lighting is enhanced from 92 to 94. Using this short-wavelength cyan emission instead of a part of the emission from a blue chip can effectively prevent “blue hazard”. This work provides basic principles for the design of ultra-narrow-band phosphors, thus achieving their applications in the fields of healthy lighting and eye-friendly display.
期刊介绍:
Laser & Photonics Reviews is a reputable journal that publishes high-quality Reviews, original Research Articles, and Perspectives in the field of photonics and optics. It covers both theoretical and experimental aspects, including recent groundbreaking research, specific advancements, and innovative applications.
As evidence of its impact and recognition, Laser & Photonics Reviews boasts a remarkable 2022 Impact Factor of 11.0, according to the Journal Citation Reports from Clarivate Analytics (2023). Moreover, it holds impressive rankings in the InCites Journal Citation Reports: in 2021, it was ranked 6th out of 101 in the field of Optics, 15th out of 161 in Applied Physics, and 12th out of 69 in Condensed Matter Physics.
The journal uses the ISSN numbers 1863-8880 for print and 1863-8899 for online publications.