Li substituent tuning of LED phosphors with enhanced efficiency, tunable photoluminescence, and improved thermal stability
Solid-state phosphor-converted white light-emitting diodes (pc-WLEDs) are currently revolutionizing the lighting industry. To advance the technology, phosphors with high efficiency, tunable photoluminescence, and high thermal stability are required. Here, we demonstrate that a simple lithium incorpo...
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| Veröffentlicht in: | Science advances 2019-01, Vol.5 (1), p.eaav0363-eaav0363 |
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| creator | Zhao, Ming Xia, Zhiguo Huang, Xiaoxiao Ning, Lixin Gautier, Romain Molokeev, Maxim S Zhou, Yayun Chuang, Yu-Chun Zhang, Qinyuan Liu, Quanlin Poeppelmeier, Kenneth R |
| description | Solid-state phosphor-converted white light-emitting diodes (pc-WLEDs) are currently revolutionizing the lighting industry. To advance the technology, phosphors with high efficiency, tunable photoluminescence, and high thermal stability are required. Here, we demonstrate that a simple lithium incorporation in NaAlSiO
:Eu system enables the simultaneous fulfillment of the three criteria. The Li substitution at Al sites beside Na sites in NaAlSiO
:Eu leads to an enhanced emission intensity/efficiency owing to an effective Eu
to Eu
reduction, an emission color tuning from yellow to green by tuning the occupation of different Eu sites, and an improvement of luminescence thermal stability as a result of the interplay with Li-related defects. A pc-WLED using the Li-codoped NaAlSiO
:Eu as a green component exhibits improved performance. The phosphors with multiple activator sites can facilitate the positive synergistic effect on luminescence properties. |
| doi_str_mv | 10.1126/sciadv.aav0363 |
| format | Article |
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:Eu system enables the simultaneous fulfillment of the three criteria. The Li substitution at Al sites beside Na sites in NaAlSiO
:Eu leads to an enhanced emission intensity/efficiency owing to an effective Eu
to Eu
reduction, an emission color tuning from yellow to green by tuning the occupation of different Eu sites, and an improvement of luminescence thermal stability as a result of the interplay with Li-related defects. A pc-WLED using the Li-codoped NaAlSiO
:Eu as a green component exhibits improved performance. The phosphors with multiple activator sites can facilitate the positive synergistic effect on luminescence properties.</description><identifier>ISSN: 2375-2548</identifier><identifier>EISSN: 2375-2548</identifier><identifier>DOI: 10.1126/sciadv.aav0363</identifier><identifier>PMID: 30746472</identifier><language>eng</language><publisher>United States: American Association for the Advancement of Science (AAAS)</publisher><subject>Chemistry ; Condensed Matter ; Materials Science ; Physics ; SciAdv r-articles</subject><ispartof>Science advances, 2019-01, Vol.5 (1), p.eaav0363-eaav0363</ispartof><rights>Attribution - NonCommercial</rights><rights>Copyright © 2019 The Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). 2019 The Authors</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c424t-261781be2333b7e124032ce4e7e66a74616c650509571dd9e5b340948012bad83</citedby><cites>FETCH-LOGICAL-c424t-261781be2333b7e124032ce4e7e66a74616c650509571dd9e5b340948012bad83</cites><orcidid>0000-0003-3533-7140 ; 0000-0001-6544-4735 ; 0000-0003-1655-9127 ; 0000-0003-2311-568X ; 0000-0002-8297-0945 ; 0000-0002-2879-5381 ; 0000-0002-9670-3223 ; 0000-0003-1962-5556 ; 0000-0002-3042-0335</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6357867/pdf/$$EPDF$$P50$$Gpubmedcentral$$Hfree_for_read</linktopdf><linktohtml>$$Uhttps://www.ncbi.nlm.nih.gov/pmc/articles/PMC6357867/$$EHTML$$P50$$Gpubmedcentral$$Hfree_for_read</linktohtml><link.rule.ids>230,314,723,776,780,860,881,27901,27902,53766,53768</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/30746472$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink><backlink>$$Uhttps://hal.science/hal-02045643$$DView record in HAL$$Hfree_for_read</backlink></links><search><creatorcontrib>Zhao, Ming</creatorcontrib><creatorcontrib>Xia, Zhiguo</creatorcontrib><creatorcontrib>Huang, Xiaoxiao</creatorcontrib><creatorcontrib>Ning, Lixin</creatorcontrib><creatorcontrib>Gautier, Romain</creatorcontrib><creatorcontrib>Molokeev, Maxim S</creatorcontrib><creatorcontrib>Zhou, Yayun</creatorcontrib><creatorcontrib>Chuang, Yu-Chun</creatorcontrib><creatorcontrib>Zhang, Qinyuan</creatorcontrib><creatorcontrib>Liu, Quanlin</creatorcontrib><creatorcontrib>Poeppelmeier, Kenneth R</creatorcontrib><title>Li substituent tuning of LED phosphors with enhanced efficiency, tunable photoluminescence, and improved thermal stability</title><title>Science advances</title><addtitle>Sci Adv</addtitle><description>Solid-state phosphor-converted white light-emitting diodes (pc-WLEDs) are currently revolutionizing the lighting industry. To advance the technology, phosphors with high efficiency, tunable photoluminescence, and high thermal stability are required. Here, we demonstrate that a simple lithium incorporation in NaAlSiO
:Eu system enables the simultaneous fulfillment of the three criteria. The Li substitution at Al sites beside Na sites in NaAlSiO
:Eu leads to an enhanced emission intensity/efficiency owing to an effective Eu
to Eu
reduction, an emission color tuning from yellow to green by tuning the occupation of different Eu sites, and an improvement of luminescence thermal stability as a result of the interplay with Li-related defects. A pc-WLED using the Li-codoped NaAlSiO
:Eu as a green component exhibits improved performance. 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To advance the technology, phosphors with high efficiency, tunable photoluminescence, and high thermal stability are required. Here, we demonstrate that a simple lithium incorporation in NaAlSiO
:Eu system enables the simultaneous fulfillment of the three criteria. The Li substitution at Al sites beside Na sites in NaAlSiO
:Eu leads to an enhanced emission intensity/efficiency owing to an effective Eu
to Eu
reduction, an emission color tuning from yellow to green by tuning the occupation of different Eu sites, and an improvement of luminescence thermal stability as a result of the interplay with Li-related defects. A pc-WLED using the Li-codoped NaAlSiO
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| source | DOAJ Directory of Open Access Journals; EZB-FREE-00999 freely available EZB journals; PubMed Central |
| subjects | Chemistry Condensed Matter Materials Science Physics SciAdv r-articles |
| title | Li substituent tuning of LED phosphors with enhanced efficiency, tunable photoluminescence, and improved thermal stability |
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