{"id":932,"date":"2021-09-16T20:10:42","date_gmt":"2021-09-16T12:10:42","guid":{"rendered":"http:\/\/polyhedra.cn\/zh\/?p=932"},"modified":"2022-09-07T10:40:45","modified_gmt":"2022-09-07T02:40:45","slug":"polyhedron-transformation-toward-stable-narrow%e2%80%90band-green-phosphors-for-wide%e2%80%90color%e2%80%90gamut-liquid-crystal-display","status":"publish","type":"post","link":"http:\/\/ustb.cc\/zh\/polyhedron-transformation-toward-stable-narrow%e2%80%90band-green-phosphors-for-wide%e2%80%90color%e2%80%90gamut-liquid-crystal-display\/","title":{"rendered":"Polyhedron transformation toward stable narrow\u2010band green phosphors for wide\u2010color\u2010gamut liquid crystal display"},"content":{"rendered":"\n<p><strong><em><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">Adv. Funct. Mater.,<\/mark><\/em> 2019, 29(30), 1901988.<\/strong> <a href=\"https:\/\/onlinelibrary.wiley.com\/doi\/abs\/10.1002\/adfm.201901988\">https:\/\/onlinelibrary.wiley.com\/doi\/abs\/10.1002\/adfm.201901988<\/a><\/p>\n\n\n\n<p>A robust and stable narrow-band green emitter is recognized as a key enabler for wide-color-gamut liquid crystal display (LCD) backlights. Herein, an emerging rare earth silicate phosphor, RbNa(Li<sub>3<\/sub>SiO<sub>4<\/sub>)<sub>2<\/sub>:Eu<sup>2+<\/sup>&nbsp;(RN:Eu<sup>2+<\/sup>) with exceptional optical properties and excellent thermal stability, is reported. The resulting RN:Eu<sup>2+<\/sup>&nbsp;phosphor presents a narrow green emission band centered at 523 nm with a full width at half maximum of 41 nm and excellent thermal stability (102%@425 K of the integrated emission intensity at 300 K). RN:Eu<sup>2+<\/sup>&nbsp;also shows a high quantum efficiency, an improved chemical stability, and a reduced Stokes shift owing to the modified local environment, in which [NaO<sub>8<\/sub>] cubes replace [LiO<sub>4<\/sub>] squares in RbLi(Li<sub>3<\/sub>SiO<sub>4<\/sub>)<sub>2<\/sub>:Eu<sup>2+<\/sup>&nbsp;via polyhedron transformation. White light-emitting diode (wLED) devices with a wide color gamut (113% National Television System Committee (NTSC)) and high luminous efficacy (111.08 lm W<sup>\u22121<\/sup>) are obtained by combining RN:Eu<sup>2+<\/sup>&nbsp;as the green emitter, K<sub>2<\/sub>SiF<sub>6<\/sub>:Mn<sup>4+<\/sup>&nbsp;as the red emitter, and blue-emitting InGaN chips. Using these wLEDs as backlights, a prototype 20.5 in. LCD screen is fabricated, demonstrating the bright future of stable RN:Eu<sup>2+<\/sup>&nbsp;for wide-color-gamut LCD backlight application.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Adv. Funct. Mater., 2019, 29(30), 1901988. https:\/\/onli [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[26],"tags":[],"class_list":["post-932","post","type-post","status-publish","format-standard","hentry","category-lab_papers_2019"],"_links":{"self":[{"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/932","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/users\/4"}],"replies":[{"embeddable":true,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/comments?post=932"}],"version-history":[{"count":2,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/932\/revisions"}],"predecessor-version":[{"id":1927,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/932\/revisions\/1927"}],"wp:attachment":[{"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/media?parent=932"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/categories?post=932"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/tags?post=932"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}