{"title":"High Efficiency and Narrow-Band Green Emission in Eu2+ and Mn2+ Co-Doped Na2MgAl10O17 Phosphor for Backlight Display Application","authors":"Xiaodeng Wu, Yujun Liang, Zeqian Liu, Gang Chen","doi":"10.1002/bio.70062","DOIUrl":null,"url":null,"abstract":"<div>\n \n <p>Wide color gamut display has become a new generation of display technology because of its good color saturation. However, the low quantum efficiency and wide half peak width of narrow-band green phosphors are still the main barriers in their development and application. This work addresses these challenges by using Mn<sup>2+</sup> as the luminescent center and constructing efficient Eu<sup>2+</sup> → Mn<sup>2+</sup> energy transfer in Na<sub>2</sub>MgAl<sub>10</sub>O<sub>17</sub> (NMAO) matrix. The NMAO:0.15Eu<sup>2+</sup>, 0.30Mn<sup>2+</sup> phosphor presents a single-band emission peaking at 513 nm with a full width at half maximum (FWHM) of only 33 nm under the excitation of 365 nm LED chip. In addition, under the excitation wavelength of 365 nm, the energy transfer efficiency reaches 74%. Compared with the NMAO:0.30Mn<sup>2+</sup>, the intensity of the NMAO:0.15Eu<sup>2+</sup>, 0.30Mn<sup>2+</sup> increases by 5.5 times and the internal quantum efficiency is up to 61.82%. A white LED device with the CIE coordinates of (0.2871, 0.3472) and a color gamut area of 94% NTSC has been assembled successfully by combining 365 nm LED chips with NMAO:0.15Eu<sup>2+</sup>, 0.30Mn<sup>2+</sup>, BaMgAl<sub>10</sub>O<sub>17</sub>:Eu<sup>2+</sup>, and K<sub>2</sub>SiF<sub>6</sub>:Mn<sup>4+</sup> as green, blue, and red component. This work enriches the relevant content of Mn<sup>2+</sup>-doped phosphors and provides a constructive insight into improving luminescent performance through energy transfer.</p>\n </div>","PeriodicalId":49902,"journal":{"name":"Luminescence","volume":"39 12","pages":""},"PeriodicalIF":3.2000,"publicationDate":"2024-12-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Luminescence","FirstCategoryId":"92","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/bio.70062","RegionNum":4,"RegionCategory":"化学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CHEMISTRY, ANALYTICAL","Score":null,"Total":0}
引用次数: 0
Abstract
Wide color gamut display has become a new generation of display technology because of its good color saturation. However, the low quantum efficiency and wide half peak width of narrow-band green phosphors are still the main barriers in their development and application. This work addresses these challenges by using Mn2+ as the luminescent center and constructing efficient Eu2+ → Mn2+ energy transfer in Na2MgAl10O17 (NMAO) matrix. The NMAO:0.15Eu2+, 0.30Mn2+ phosphor presents a single-band emission peaking at 513 nm with a full width at half maximum (FWHM) of only 33 nm under the excitation of 365 nm LED chip. In addition, under the excitation wavelength of 365 nm, the energy transfer efficiency reaches 74%. Compared with the NMAO:0.30Mn2+, the intensity of the NMAO:0.15Eu2+, 0.30Mn2+ increases by 5.5 times and the internal quantum efficiency is up to 61.82%. A white LED device with the CIE coordinates of (0.2871, 0.3472) and a color gamut area of 94% NTSC has been assembled successfully by combining 365 nm LED chips with NMAO:0.15Eu2+, 0.30Mn2+, BaMgAl10O17:Eu2+, and K2SiF6:Mn4+ as green, blue, and red component. This work enriches the relevant content of Mn2+-doped phosphors and provides a constructive insight into improving luminescent performance through energy transfer.
期刊介绍:
Luminescence provides a forum for the publication of original scientific papers, short communications, technical notes and reviews on fundamental and applied aspects of all forms of luminescence, including bioluminescence, chemiluminescence, electrochemiluminescence, sonoluminescence, triboluminescence, fluorescence, time-resolved fluorescence and phosphorescence. Luminescence publishes papers on assays and analytical methods, instrumentation, mechanistic and synthetic studies, basic biology and chemistry.
Luminescence also publishes details of forthcoming meetings, information on new products, and book reviews. A special feature of the Journal is surveys of the recent literature on selected topics in luminescence.