{"title":"Highly Efficient and Stable Narrow Band Green Emitting Phosphor of Sb3+/Ce3+ Sensitized Cs2NaTbCl6 for WLED","authors":"Changheng Chen, Renze Chen, Ruibo Gao, Jiming Zheng, Jinmeng Xiang, Chongfeng Guo","doi":"10.1002/lpor.202401158","DOIUrl":null,"url":null,"abstract":"Realizing narrow-band green phosphors with high efficiency and thermal stability remains an enormous challenge for light-emitting diodes (LEDs) backlighting in the pursuit of wide-gamut display. Inspired by excellent and characteristic green sharp line emission of rare-earth ion Tb<sup>3+</sup>, the rare-earth-based halide double perovskite Cs<sub>2</sub>NaTbCl<sub>6</sub> phosphor with line-shape emission (FWHM: ≈7 nm) at 547 nm is developed. The introduction of sensitizers Ce<sup>3+</sup> or Sb<sup>3+</sup> enhanced the quantum yield of Cs<sub>2</sub>NaTbCl<sub>6</sub> to 76% or 90% from 52% due to the strong absorption of sensitizer and efficient energy transfer from sensitizers to Tb<sup>3+</sup>. The phosphors with or without sensitizer express better thermal stability than traditional perovskite, which originated from the phonon assistance, low thermal ionization probability, stronger localization of 4f electrons through the spectrum, and first-principles calculation. The warm white LED fabricated using the present green emitting phosphor exhibits low color temperature of 3081 K and ≈100% of the NTSC gamut, which indicates that the Ce<sup>3+</sup> or Sb<sup>3+</sup> sensitized Cs<sub>2</sub>NaTbCl<sub>6</sub> phosphors possess great application potential in WLED illumination and display fields.","PeriodicalId":204,"journal":{"name":"Laser & Photonics Reviews","volume":null,"pages":null},"PeriodicalIF":9.8000,"publicationDate":"2024-08-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Laser & Photonics Reviews","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.1002/lpor.202401158","RegionNum":1,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"OPTICS","Score":null,"Total":0}
引用次数: 0
Abstract
Realizing narrow-band green phosphors with high efficiency and thermal stability remains an enormous challenge for light-emitting diodes (LEDs) backlighting in the pursuit of wide-gamut display. Inspired by excellent and characteristic green sharp line emission of rare-earth ion Tb3+, the rare-earth-based halide double perovskite Cs2NaTbCl6 phosphor with line-shape emission (FWHM: ≈7 nm) at 547 nm is developed. The introduction of sensitizers Ce3+ or Sb3+ enhanced the quantum yield of Cs2NaTbCl6 to 76% or 90% from 52% due to the strong absorption of sensitizer and efficient energy transfer from sensitizers to Tb3+. The phosphors with or without sensitizer express better thermal stability than traditional perovskite, which originated from the phonon assistance, low thermal ionization probability, stronger localization of 4f electrons through the spectrum, and first-principles calculation. The warm white LED fabricated using the present green emitting phosphor exhibits low color temperature of 3081 K and ≈100% of the NTSC gamut, which indicates that the Ce3+ or Sb3+ sensitized Cs2NaTbCl6 phosphors possess great application potential in WLED illumination and display fields.
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.