{"id":1615,"date":"2022-05-24T17:22:06","date_gmt":"2022-05-24T09:22:06","guid":{"rendered":"http:\/\/ustb.cc\/zh\/?p=1615"},"modified":"2023-09-10T11:56:08","modified_gmt":"2023-09-10T03:56:08","slug":"crystallographic-control-for-cr4-activators-toward-efficient-nir-ii-luminescence","status":"publish","type":"post","link":"http:\/\/ustb.cc\/zh\/crystallographic-control-for-cr4-activators-toward-efficient-nir-ii-luminescence\/","title":{"rendered":"Crystallographic control for Cr4+ activators toward efficient NIR-II luminescence"},"content":{"rendered":"\n<h3 class=\"wp-block-heading\"><\/h3>\n\n\n\n<p><em><strong>Inorg. Chem. Front.<\/strong><\/em>, 2022,<strong>9<\/strong>, 1912-1919 <a href=\"https:\/\/doi.org\/10.1039\/D2QI00217E\">https:\/\/doi.org\/10.1039\/D2QI00217E<\/a><\/p>\n\n\n<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-large\"><img decoding=\"async\" src=\"https:\/\/pubs.rsc.org\/en\/Image\/Get?imageInfo.ImageType=GA&amp;imageInfo.ImageIdentifier.ManuscriptID=D2QI00217E&amp;imageInfo.ImageIdentifier.Year=2022\" alt=\"\"\/><\/figure>\n<\/div>\n\n\n<p>Broadband near-infrared (NIR) emitting phosphors have attracted great interest due to their potential applications in non-destructive examination and bioimaging. However, most of the reported broadband NIR phosphors emit in the NIR-I region with a wavelength shorter than 950 nm, while rare-earth activated NIR-II phosphors can hardly meet the requirements because of their sharp emission. Herein, we successfully synthesized the broadband NIR-II phosphor Li<small><sub>2<\/sub><\/small>ZnGeO<small><sub>4<\/sub><\/small>:Cr<small><sup>4+<\/sup><\/small>. By employing the all-tetrahedron-built matrix, all the Cr ions are stabilized in the tetravalent state due to crystallographic control. This phosphor shows wide absorption from the red to near-infrared region. Under 646 nm excitation, it exhibits broadband NIR-II emission peaking at 1218 nm with an FWHM of 220 nm at room temperature. We also demonstrated the potential applications of Li<small><sub>2<\/sub><\/small>ZnGeO<small><sub>4<\/sub><\/small>:Cr<small><sup>4+<\/sup><\/small> as an NIR-II light source in non-destructive examination and bioimaging. This work provides a new strategy for exploring broad-band NIR-II luminescent materials.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Inorg. Chem. Front., 2022,9, 1912-1919 https:\/\/doi.org\/ [&hellip;]<\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[168],"tags":[],"class_list":["post-1615","post","type-post","status-publish","format-standard","hentry","category-lab_papers_2022"],"_links":{"self":[{"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/1615","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\/9"}],"replies":[{"embeddable":true,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/comments?post=1615"}],"version-history":[{"count":4,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/1615\/revisions"}],"predecessor-version":[{"id":2447,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/posts\/1615\/revisions\/2447"}],"wp:attachment":[{"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/media?parent=1615"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/categories?post=1615"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/ustb.cc\/zh\/wp-json\/wp\/v2\/tags?post=1615"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}