{"id":927,"date":"2021-09-16T20:08:31","date_gmt":"2021-09-16T12:08:31","guid":{"rendered":"http:\/\/polyhedra.cn\/zh\/?p=927"},"modified":"2023-09-10T20:55:37","modified_gmt":"2023-09-10T12:55:37","slug":"enhanced-yellow-persistent-luminescence-in-sr3sio5eu2-through-ge-incorporation","status":"publish","type":"post","link":"http:\/\/ustb.cc\/zh\/enhanced-yellow-persistent-luminescence-in-sr3sio5eu2-through-ge-incorporation\/","title":{"rendered":"Enhanced Yellow Persistent Luminescence in Sr3SiO5:Eu2+ through Ge Incorporation"},"content":{"rendered":"\n<p><strong><em><mark style=\"background-color:rgba(0, 0, 0, 0)\" class=\"has-inline-color has-vivid-cyan-blue-color\">Inorg. Chem.,<\/mark><\/em><\/strong> <strong>2019, 58, 13, 8694\u20138701.<\/strong> <a href=\"https:\/\/pubs.acs.org\/doi\/abs\/10.1021\/acs.inorgchem.9b01020\">https:\/\/pubs.acs.org\/doi\/abs\/10.1021\/acs.inorgchem.9b01020<\/a><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter\"><img decoding=\"async\" src=\"https:\/\/pubs.acs.org\/na101\/home\/literatum\/publisher\/achs\/journals\/content\/inocaj\/2019\/inocaj.2019.58.issue-13\/acs.inorgchem.9b01020\/20190625\/images\/medium\/ic-2019-01020f_0007.gif\" alt=\"Abstract Image\"\/><\/figure>\n<\/div>\n\n\n<p>The Sr<sub>3<\/sub>SiO<sub>5<\/sub>:Eu<strong><sup>2+<\/sup><\/strong>\u00a0phosphor has attracted considerable attention for applications in white LEDs owing to its highly efficient yellow emission under violet-blue excitation. We report herein an enhancement of yellow persistent luminescence in Sr<sub>3<\/sub>SiO<sub>5<\/sub>:Eu<sup>2+<\/sup>\u00a0through Ge incorporation. The strongest persistent luminescence intensity is observed for Sr<sub>3<\/sub>(Si<sub>1\u2013<em>x<\/em><\/sub>Ge<sub><em>x<\/em><\/sub>)O<sub>5<\/sub>:Eu<sup>2+<\/sup>\u00a0with\u00a0<em>x<\/em>\u00a0= 0.005 with a peak emission wavelength at \u223c580 nm and a persistent time of \u223c7000 s at the 0.32 mcd\/m<sup>2<\/sup>\u00a0threshold value after UV radiation. A combination of thermoluminescence measurements and density functional theory (DFT) calculations reveals that the afterglow enhancement is due to a significant increase in the number of oxygen vacancies that act as electron trapping centers with appropriate trap depths. This investigation is anticipated to encourage more exploration of Ge<sub>Si<\/sub>\u00a0substitution to design and improve Si-containing persistent phosphors with superior functionalities.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Inorg. Chem., 2019, 58, 13, 8694\u20138701. https:\/\/pubs.acs [&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-927","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\/927","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=927"}],"version-history":[{"count":4,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/927\/revisions"}],"predecessor-version":[{"id":2542,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/927\/revisions\/2542"}],"wp:attachment":[{"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/media?parent=927"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/categories?post=927"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/tags?post=927"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}