{"id":156,"date":"2021-03-09T16:12:59","date_gmt":"2021-03-09T08:12:59","guid":{"rendered":"http:\/\/www.ustb.cc\/?p=156"},"modified":"2025-10-28T09:38:39","modified_gmt":"2025-10-28T01:38:39","slug":"the-red-persistent-luminescence-of-srcaalsin3eu2-and-mechanism-different-to-sral2o4eu2dy3","status":"publish","type":"post","link":"http:\/\/ustb.cc\/zh\/the-red-persistent-luminescence-of-srcaalsin3eu2-and-mechanism-different-to-sral2o4eu2dy3\/","title":{"rendered":"The red persistent luminescence of (Sr,Ca)AlSiN3:Eu2+ and mechanism different to SrAl2O4:Eu2+,Dy3+"},"content":{"rendered":"<p><a href=\"http:\/\/DOI: 10.1016\/j.jlumin.2018.12.069\">Journal of Luminescence,\u00a0April 2019,\u00a0208<\/a><\/p>\n<p style=\"text-align: justify;\">(Sr,Ca)AlSiN3:Eu\u00b2\u207a phosphors have been widely used in phosphor-converted white light emitting diodes. Herein, we reported the strong red persistent luminescence in (Sr,Ca)AlSiN3:Eu\u00b2\u207a under UV light excitation. The Sr0.8Ca0.2AlSiN3:0.15% Eu\u00b2\u207a shows the strongest red persistent luminescence with a peak emission wavelength at ~628 nm and a persistent time of ~9600 s at the 0.32 mcd\/m\u00b2 threshold value. A new persistent luminescence mechanism, which is different to that of SrAl2O4:Eu\u00b2\u207a,Dy\u00b3\u207a, was proposed by comparing the thermoluminescence excitation spectrum (TLES) and the photoluminescence excitation spectrum (PLES) of Sr0.8Ca0.2AlSiN3:0.15% Eu\u00b2\u207a. The electrons are directly excited from 4f ground states to the conduction band or from valence band to conduction band in (Sr,Ca)AlSiN3:Eu\u00b2\u207a; while, in SrAl2O4:Eu\u00b2\u207a,Dy\u00b3\u207a, they are first excited to 5d level and then stimulated thermal process to the conduction band. The effect of Eu\u00b2\u207a concentration on red persistent luminescence in (Sr,Ca)AlSiN3:Eu\u00b2\u207a were discussed. The proposed mechanism of persistent luminescence can help us to design and find new persistent luminescence materials <a href='https:\/\/www.east-hinchable.es\/e109-parque-acuatico-hinchable.html' style=\"color: grey; text-decoration: none;\">parque acuatico hinchable<\/a>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Journal of Luminescence,\u00a0April 2019,\u00a0208 (Sr,Ca)AlSiN3: [&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":[38,64,73,80],"class_list":["post-156","post","type-post","status-publish","format-aside","hentry","category-lab_papers_2019","tag-eu2","tag-64","tag-73","tag-80","post_format-post-format-aside"],"_links":{"self":[{"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/156","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=156"}],"version-history":[{"count":1,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/156\/revisions"}],"predecessor-version":[{"id":3193,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/156\/revisions\/3193"}],"wp:attachment":[{"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/media?parent=156"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/categories?post=156"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/tags?post=156"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}