{"id":146,"date":"2021-03-09T16:08:18","date_gmt":"2021-03-09T08:08:18","guid":{"rendered":"http:\/\/www.ustb.cc\/?p=146"},"modified":"2025-10-28T09:41:46","modified_gmt":"2025-10-28T01:41:46","slug":"effects-of-full-range-eu-concentration-on-sr2-2xeu2xsi5n8-phosphors-a-deep-red-emission-and-luminescent-thermal-quenching-2","status":"publish","type":"post","link":"http:\/\/ustb.cc\/zh\/effects-of-full-range-eu-concentration-on-sr2-2xeu2xsi5n8-phosphors-a-deep-red-emission-and-luminescent-thermal-quenching-2\/","title":{"rendered":"Effects of full-range Eu concentration on Sr2-2xEu2xSi5N8 phosphors: A deep-red emission and luminescent thermal quenching"},"content":{"rendered":"<address id=\"publication-title\"><a href=\"https:\/\/doi.org\/10.1016\/j.jallcom.2018.08.236\">Journal of Alloys and Compounds,\u00a0Volume 770,\u00a05 January 2019, Pages 1069-1077<\/a><\/address>\n<address>\n<div id=\"abstracts\">\n<div id=\"abs0010\" lang=\"en\">\n<p id=\"abssec0010\" style=\"text-align: justify;\">To fabricate white-light-emitting diodes (white LEDs) with high color-rendering index or full light spectrum emission, the discovery of more efficient deep-red emitting\u00a0phosphor\u00a0materials is essential. In this paper, we have synthesized a series of Sr2-2xEu2xSi5N8\u00a0(0\u202f\u2264\u202fx\u202f\u2264\u202f1) solid-solution compounds, and have systemically investigated effects of full-range Eu concentration on their\u00a0luminescence. Their emission band maximum can be largely tuned from 610 to 725\u202fnm by increasing Eu content. Reabsorption at low Eu2+\u00a0concentration while both the energy transfer and Stocks shift at high Eu2+\u00a0concentration account for this large spectral red-shift. Luminescent thermal quenching performance gets worse with Eu2+\u00a0concentration increasing. The compound with x\u202f=\u202f0.15 possesses the best crystallinity and the highest luminescence intensity with the peak position around 660\u202fnm, and still maintains 88.5% room-temperature intensity at 400\u202fK, indicating that great potential for the application as a deep-red phosphor <a href='https:\/\/www.east-hinchable.es\/' style=\"color: grey; text-decoration: none;\">inchable<\/a>.<\/p>\n<\/div>\n<\/div>\n<ul id=\"issue-navigation\"><\/ul>\n<\/address>\n","protected":false},"excerpt":{"rendered":"<p>Journal of Alloys and Compounds,\u00a0Volume 770,\u00a05 January  [&hellip;]<\/p>\n","protected":false},"author":4,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"aside","meta":{"footnotes":""},"categories":[26],"tags":[38,64],"class_list":["post-146","post","type-post","status-publish","format-aside","hentry","category-lab_papers_2019","tag-eu2","tag-64","post_format-post-format-aside"],"_links":{"self":[{"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/146","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=146"}],"version-history":[{"count":1,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/146\/revisions"}],"predecessor-version":[{"id":3196,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/146\/revisions\/3196"}],"wp:attachment":[{"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/media?parent=146"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/categories?post=146"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/tags?post=146"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}