{"id":896,"date":"2021-09-16T19:50:00","date_gmt":"2021-09-16T11:50:00","guid":{"rendered":"http:\/\/polyhedra.cn\/zh\/?p=896"},"modified":"2023-09-10T21:09:06","modified_gmt":"2023-09-10T13:09:06","slug":"li-substituent-tuning-of-led-phosphors-with-enhanced-efficiency-tunable-photoluminescence-and-improved-thermal-stability","status":"publish","type":"post","link":"http:\/\/ustb.cc\/zh\/li-substituent-tuning-of-led-phosphors-with-enhanced-efficiency-tunable-photoluminescence-and-improved-thermal-stability\/","title":{"rendered":"Li substituent tuning of LED phosphors with enhanced efficiency, tunable photoluminescence, and improved thermal stability"},"content":{"rendered":"\n<p><a href=\"https:\/\/www.science.org\/doi\/10.1126\/sciadv.aav0363?intcmp=trendmd-adv&amp;\">https:\/\/www.science.org\/doi\/10.1126\/sciadv.aav0363?intcmp=trendmd-adv&amp;<\/a><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/www.science.org\/cms\/10.1126\/sciadv.aav0363\/asset\/4964fb00-2239-4e5e-9cec-51b0ea627c11\/assets\/graphic\/aav0363-f1.jpeg\" alt=\"\"\/><\/figure>\n<\/div>\n\n\n<p>Solid-state phosphor-converted white light-emitting diodes (pc-WLEDs) are currently revolutionizing the lighting industry. To advance the technology, phosphors with high efficiency, tunable photoluminescence, and high thermal stability are required. Here, we demonstrate that a simple lithium incorporation in NaAlSiO<sub>4<\/sub>:Eu system enables the simultaneous fulfillment of the three criteria. The Li substitution at Al sites beside Na sites in NaAlSiO<sub>4<\/sub>:Eu leads to an enhanced emission intensity\/efficiency owing to an effective Eu<sup>3+<\/sup>&nbsp;to Eu<sup>2+<\/sup>&nbsp;reduction, an emission color tuning from yellow to green by tuning the occupation of different Eu sites, and an improvement of luminescence thermal stability as a result of the interplay with Li-related defects. A pc-WLED using the Li-codoped NaAlSiO<sub>4<\/sub>:Eu as a green component exhibits improved performance. The phosphors with multiple activator sites can facilitate the positive synergistic effect on luminescence properties.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>https:\/\/www.science.org\/doi\/10.1126\/sciadv.aav0363?intc [&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":[38],"class_list":["post-896","post","type-post","status-publish","format-standard","hentry","category-lab_papers_2019","tag-eu2"],"_links":{"self":[{"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/896","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=896"}],"version-history":[{"count":4,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/896\/revisions"}],"predecessor-version":[{"id":2561,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/896\/revisions\/2561"}],"wp:attachment":[{"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/media?parent=896"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/categories?post=896"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/tags?post=896"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}