Long afterglow of trivalent dysprosium doped strontium aluminate
Trivalent dysprosium doped strontium aluminate (SrA12O4:Dy3+) was synthesized via the sol–gel combustion method to realize green afterglow in the absence of Eu2+ luminescent centers. The morphology, crystal structure, photoluminescence and long afterglow of the SrAl2O4:Dy3+ were characterized with s...
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| Veröffentlicht in: | Journal of luminescence 2015-04, Vol.160, p.271-275 |
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| creator | Huang, Yuan Ming Ma, Qing-lan |
| description | Trivalent dysprosium doped strontium aluminate (SrA12O4:Dy3+) was synthesized via the sol–gel combustion method to realize green afterglow in the absence of Eu2+ luminescent centers. The morphology, crystal structure, photoluminescence and long afterglow of the SrAl2O4:Dy3+ were characterized with scanning electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy and photoluminescence spectroscopy, respectively. The bluish-green photoluminescence of SrAl2O4:Dy3+ consists of a broad emission band centered at about 520nm and two characteristic emissions of Dy3+ ions centered at 480 and 575nm, respectively. The green afterglow of SrAl2O4:Dy3+ is a broad emission band centered at around 520nm, and the lifetime extracted from afterglow decay is found to be 53s. The mechanism on the green afterglow from SrAl2O4:Dy3+ is discussed in terms of the possible defect levels in the host.
•Broad band long-lasting afterglow is observed in SrAl2O4:Dy3+ phosphors.•Characteristic emissions of Dy3+ ions are superimposed on the broad PL of phosphors.•Dy3+ ions can also act as luminescent centers in addition to electron traps.•A mechanism on long afterglow of SrAl2O4:Dy3+ is proposed without Eu2+ activator. |
| doi_str_mv | 10.1016/j.jlumin.2014.12.042 |
| format | Article |
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•Broad band long-lasting afterglow is observed in SrAl2O4:Dy3+ phosphors.•Characteristic emissions of Dy3+ ions are superimposed on the broad PL of phosphors.•Dy3+ ions can also act as luminescent centers in addition to electron traps.•A mechanism on long afterglow of SrAl2O4:Dy3+ is proposed without Eu2+ activator.</description><identifier>ISSN: 0022-2313</identifier><identifier>EISSN: 1872-7883</identifier><identifier>DOI: 10.1016/j.jlumin.2014.12.042</identifier><language>eng</language><publisher>Elsevier B.V</publisher><subject>Afterglows ; Aluminates ; Dysprosium ; Dysprosium ions ; Emission spectroscopy ; Phosphorescence ; Photoluminescence ; Spectroscopy ; Strontium ; Strontium aluminate ; X-rays</subject><ispartof>Journal of luminescence, 2015-04, Vol.160, p.271-275</ispartof><rights>2014 Elsevier B.V.</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c339t-47c024c111091cae5433e30571a7a1edc76b9203f8ae00fd78976908356f76ab3</citedby><cites>FETCH-LOGICAL-c339t-47c024c111091cae5433e30571a7a1edc76b9203f8ae00fd78976908356f76ab3</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.jlumin.2014.12.042$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,780,784,3550,27924,27925,45995</link.rule.ids></links><search><creatorcontrib>Huang, Yuan Ming</creatorcontrib><creatorcontrib>Ma, Qing-lan</creatorcontrib><title>Long afterglow of trivalent dysprosium doped strontium aluminate</title><title>Journal of luminescence</title><description>Trivalent dysprosium doped strontium aluminate (SrA12O4:Dy3+) was synthesized via the sol–gel combustion method to realize green afterglow in the absence of Eu2+ luminescent centers. The morphology, crystal structure, photoluminescence and long afterglow of the SrAl2O4:Dy3+ were characterized with scanning electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy and photoluminescence spectroscopy, respectively. The bluish-green photoluminescence of SrAl2O4:Dy3+ consists of a broad emission band centered at about 520nm and two characteristic emissions of Dy3+ ions centered at 480 and 575nm, respectively. The green afterglow of SrAl2O4:Dy3+ is a broad emission band centered at around 520nm, and the lifetime extracted from afterglow decay is found to be 53s. The mechanism on the green afterglow from SrAl2O4:Dy3+ is discussed in terms of the possible defect levels in the host.
•Broad band long-lasting afterglow is observed in SrAl2O4:Dy3+ phosphors.•Characteristic emissions of Dy3+ ions are superimposed on the broad PL of phosphors.•Dy3+ ions can also act as luminescent centers in addition to electron traps.•A mechanism on long afterglow of SrAl2O4:Dy3+ is proposed without Eu2+ activator.</description><subject>Afterglows</subject><subject>Aluminates</subject><subject>Dysprosium</subject><subject>Dysprosium ions</subject><subject>Emission spectroscopy</subject><subject>Phosphorescence</subject><subject>Photoluminescence</subject><subject>Spectroscopy</subject><subject>Strontium</subject><subject>Strontium aluminate</subject><subject>X-rays</subject><issn>0022-2313</issn><issn>1872-7883</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2015</creationdate><recordtype>article</recordtype><recordid>eNp9kEtPwzAQhC0EEqXwDzjkyCVhbSd-XBCo4iVV4gJny3U2laM8iu0W8e9JCWdOq5VmZmc_Qq4pFBSouG2Lttv3figY0LKgrICSnZAFVZLlUil-ShYAjOWMU35OLmJsAYBrpRfkfj0O28w2CcO2G7-ysclS8Afb4ZCy-jvuwhj9vs_qcYd1FlMYh3Tc7e9Bm_CSnDW2i3j1N5fk4-nxffWSr9-eX1cP69xxrlNeSgesdJRS0NRZrErOkUMlqZWWYu2k2GgGvFEWAZpaKi2FBsUr0UhhN3xJbubcqdHnHmMyvY8Ou84OOO6joUJoJbmQ1SQtZ6mbyseAjdkF39vwbSiYIzDTmhmYOQIzlJkJ2GS7m204vXHwGEx0HgeHtQ_okqlH_3_AD4v_diA</recordid><startdate>20150401</startdate><enddate>20150401</enddate><creator>Huang, Yuan Ming</creator><creator>Ma, Qing-lan</creator><general>Elsevier B.V</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7QF</scope><scope>7SP</scope><scope>7U5</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20150401</creationdate><title>Long afterglow of trivalent dysprosium doped strontium aluminate</title><author>Huang, Yuan Ming ; Ma, Qing-lan</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c339t-47c024c111091cae5433e30571a7a1edc76b9203f8ae00fd78976908356f76ab3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2015</creationdate><topic>Afterglows</topic><topic>Aluminates</topic><topic>Dysprosium</topic><topic>Dysprosium ions</topic><topic>Emission spectroscopy</topic><topic>Phosphorescence</topic><topic>Photoluminescence</topic><topic>Spectroscopy</topic><topic>Strontium</topic><topic>Strontium aluminate</topic><topic>X-rays</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Huang, Yuan Ming</creatorcontrib><creatorcontrib>Ma, Qing-lan</creatorcontrib><collection>CrossRef</collection><collection>Aluminium Industry Abstracts</collection><collection>Electronics & Communications Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Journal of luminescence</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Huang, Yuan Ming</au><au>Ma, Qing-lan</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Long afterglow of trivalent dysprosium doped strontium aluminate</atitle><jtitle>Journal of luminescence</jtitle><date>2015-04-01</date><risdate>2015</risdate><volume>160</volume><spage>271</spage><epage>275</epage><pages>271-275</pages><issn>0022-2313</issn><eissn>1872-7883</eissn><abstract>Trivalent dysprosium doped strontium aluminate (SrA12O4:Dy3+) was synthesized via the sol–gel combustion method to realize green afterglow in the absence of Eu2+ luminescent centers. The morphology, crystal structure, photoluminescence and long afterglow of the SrAl2O4:Dy3+ were characterized with scanning electron microscopy, X-ray diffraction, energy-dispersive X-ray spectroscopy and photoluminescence spectroscopy, respectively. The bluish-green photoluminescence of SrAl2O4:Dy3+ consists of a broad emission band centered at about 520nm and two characteristic emissions of Dy3+ ions centered at 480 and 575nm, respectively. The green afterglow of SrAl2O4:Dy3+ is a broad emission band centered at around 520nm, and the lifetime extracted from afterglow decay is found to be 53s. The mechanism on the green afterglow from SrAl2O4:Dy3+ is discussed in terms of the possible defect levels in the host.
•Broad band long-lasting afterglow is observed in SrAl2O4:Dy3+ phosphors.•Characteristic emissions of Dy3+ ions are superimposed on the broad PL of phosphors.•Dy3+ ions can also act as luminescent centers in addition to electron traps.•A mechanism on long afterglow of SrAl2O4:Dy3+ is proposed without Eu2+ activator.</abstract><pub>Elsevier B.V</pub><doi>10.1016/j.jlumin.2014.12.042</doi><tpages>5</tpages></addata></record> |
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| subjects | Afterglows Aluminates Dysprosium Dysprosium ions Emission spectroscopy Phosphorescence Photoluminescence Spectroscopy Strontium Strontium aluminate X-rays |
| title | Long afterglow of trivalent dysprosium doped strontium aluminate |
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