Quantum dot scaffold phosphors: Maximizing luminescence quantum yield via different stock environments
•Study presents a novel concept for quantum dots scaffold phosphors.•Graphene quantum-dots (GQDs) has utilized as the luminescent material.•High porosity maintains highest level luminescence quantum yield.•Scaffold phosphor envisioned for high-performance phosphor-converted LEDs. This paper presents...
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| Veröffentlicht in: | Materials letters 2020-01, Vol.259, p.126846, Article 126846 |
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| container_title | Materials letters |
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| creator | Kumar, Mirgender Kumar, Anuj Makki, Aya Hekmet Seong, Kwang-Su Park, Si-Hyun |
| description | •Study presents a novel concept for quantum dots scaffold phosphors.•Graphene quantum-dots (GQDs) has utilized as the luminescent material.•High porosity maintains highest level luminescence quantum yield.•Scaffold phosphor envisioned for high-performance phosphor-converted LEDs.
This paper presents a novel concept for quantum-dots (QDs) phosphor plates using a polymer scaffold matrix. Here, graphene quantum-dots (GQDs) has utilized as the luminescent material in a polymeric scaffold prepared by free-radical polymerization followed by freeze-drying. The highly porous scaffold (porosity: ~60%, pore size in broad micron size) maintained the individual identity of the quantum dots for the beauty of high luminescence quantum yield, which is necessary for fabricating efficient phosphors. These outcomes were strongly reinforced by time-resolved photoluminescence. This study offers a systematic approach for tuning the luminescence property of quantum dots in different states such as powders, liquids, hydrogels, and freeze-dried scaffolds. |
| doi_str_mv | 10.1016/j.matlet.2019.126846 |
| format | Article |
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This paper presents a novel concept for quantum-dots (QDs) phosphor plates using a polymer scaffold matrix. Here, graphene quantum-dots (GQDs) has utilized as the luminescent material in a polymeric scaffold prepared by free-radical polymerization followed by freeze-drying. The highly porous scaffold (porosity: ~60%, pore size in broad micron size) maintained the individual identity of the quantum dots for the beauty of high luminescence quantum yield, which is necessary for fabricating efficient phosphors. These outcomes were strongly reinforced by time-resolved photoluminescence. This study offers a systematic approach for tuning the luminescence property of quantum dots in different states such as powders, liquids, hydrogels, and freeze-dried scaffolds.</description><identifier>ISSN: 0167-577X</identifier><identifier>EISSN: 1873-4979</identifier><identifier>DOI: 10.1016/j.matlet.2019.126846</identifier><language>eng</language><publisher>Amsterdam: Elsevier B.V</publisher><subject>Free radical polymerization ; Freeze drying ; Graphene ; Graphene quantum dots ; Hydrogels ; Luminescence ; Luminescence quantum yield ; Materials science ; Phosphors ; Photoluminescence ; Pore size ; Porosity ; Quantum dots ; Scaffolds ; Time-resolved photoluminescence</subject><ispartof>Materials letters, 2020-01, Vol.259, p.126846, Article 126846</ispartof><rights>2019 Elsevier B.V.</rights><rights>Copyright Elsevier BV Jan 15, 2020</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c334t-abdcfb9ff27c7ea1c5d64b4d75061e7e8bdb1e49277c16b3f75fae31c7a87a0a3</citedby><cites>FETCH-LOGICAL-c334t-abdcfb9ff27c7ea1c5d64b4d75061e7e8bdb1e49277c16b3f75fae31c7a87a0a3</cites><orcidid>0000-0003-0255-1247 ; 0000-0001-7106-7913</orcidid></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://www.sciencedirect.com/science/article/pii/S0167577X19314776$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3537,27901,27902,65306</link.rule.ids></links><search><creatorcontrib>Kumar, Mirgender</creatorcontrib><creatorcontrib>Kumar, Anuj</creatorcontrib><creatorcontrib>Makki, Aya Hekmet</creatorcontrib><creatorcontrib>Seong, Kwang-Su</creatorcontrib><creatorcontrib>Park, Si-Hyun</creatorcontrib><title>Quantum dot scaffold phosphors: Maximizing luminescence quantum yield via different stock environments</title><title>Materials letters</title><description>•Study presents a novel concept for quantum dots scaffold phosphors.•Graphene quantum-dots (GQDs) has utilized as the luminescent material.•High porosity maintains highest level luminescence quantum yield.•Scaffold phosphor envisioned for high-performance phosphor-converted LEDs.
This paper presents a novel concept for quantum-dots (QDs) phosphor plates using a polymer scaffold matrix. Here, graphene quantum-dots (GQDs) has utilized as the luminescent material in a polymeric scaffold prepared by free-radical polymerization followed by freeze-drying. The highly porous scaffold (porosity: ~60%, pore size in broad micron size) maintained the individual identity of the quantum dots for the beauty of high luminescence quantum yield, which is necessary for fabricating efficient phosphors. These outcomes were strongly reinforced by time-resolved photoluminescence. This study offers a systematic approach for tuning the luminescence property of quantum dots in different states such as powders, liquids, hydrogels, and freeze-dried scaffolds.</description><subject>Free radical polymerization</subject><subject>Freeze drying</subject><subject>Graphene</subject><subject>Graphene quantum dots</subject><subject>Hydrogels</subject><subject>Luminescence</subject><subject>Luminescence quantum yield</subject><subject>Materials science</subject><subject>Phosphors</subject><subject>Photoluminescence</subject><subject>Pore size</subject><subject>Porosity</subject><subject>Quantum dots</subject><subject>Scaffolds</subject><subject>Time-resolved photoluminescence</subject><issn>0167-577X</issn><issn>1873-4979</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2020</creationdate><recordtype>article</recordtype><recordid>eNp9kM1KxDAURoMoOI6-gYuC645JmzatC0EG_2BEBAV3IU1uNLVtZpJ0cHx6M9S1i3AhfOe73IPQOcELgkl52S56EToIiwyTekGysqLlAZqRiuUprVl9iGYxxtKCsfdjdOJ9izGmNaYzpF9GMYSxT5QNiZdCa9upZP1pfXzOXyVP4tv05scMH0k39mYAL2GQkGz-uJ2BCGyNSJTRGhwMsSdY-ZXAsDXODn388afoSIvOw9nfnKO3u9vX5UO6er5_XN6sUpnnNKSiUVI3tdYZkwwEkYUqaUMVK3BJgEHVqIYArTPGJCmbXLNCC8iJZKJiAot8ji6m3rWzmxF84K0d3RBX8izPWFXnuMYxRaeUdNZ7B5qvnemF23GC-d4ob_lklO-N8sloxK4nDOIFWwOOe2n2MpRxIANX1vxf8AvDioSt</recordid><startdate>20200115</startdate><enddate>20200115</enddate><creator>Kumar, Mirgender</creator><creator>Kumar, Anuj</creator><creator>Makki, Aya Hekmet</creator><creator>Seong, Kwang-Su</creator><creator>Park, Si-Hyun</creator><general>Elsevier B.V</general><general>Elsevier BV</general><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><orcidid>https://orcid.org/0000-0003-0255-1247</orcidid><orcidid>https://orcid.org/0000-0001-7106-7913</orcidid></search><sort><creationdate>20200115</creationdate><title>Quantum dot scaffold phosphors: Maximizing luminescence quantum yield via different stock environments</title><author>Kumar, Mirgender ; Kumar, Anuj ; Makki, Aya Hekmet ; Seong, Kwang-Su ; Park, Si-Hyun</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c334t-abdcfb9ff27c7ea1c5d64b4d75061e7e8bdb1e49277c16b3f75fae31c7a87a0a3</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2020</creationdate><topic>Free radical polymerization</topic><topic>Freeze drying</topic><topic>Graphene</topic><topic>Graphene quantum dots</topic><topic>Hydrogels</topic><topic>Luminescence</topic><topic>Luminescence quantum yield</topic><topic>Materials science</topic><topic>Phosphors</topic><topic>Photoluminescence</topic><topic>Pore size</topic><topic>Porosity</topic><topic>Quantum dots</topic><topic>Scaffolds</topic><topic>Time-resolved photoluminescence</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Kumar, Mirgender</creatorcontrib><creatorcontrib>Kumar, Anuj</creatorcontrib><creatorcontrib>Makki, Aya Hekmet</creatorcontrib><creatorcontrib>Seong, Kwang-Su</creatorcontrib><creatorcontrib>Park, Si-Hyun</creatorcontrib><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><jtitle>Materials letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Kumar, Mirgender</au><au>Kumar, Anuj</au><au>Makki, Aya Hekmet</au><au>Seong, Kwang-Su</au><au>Park, Si-Hyun</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Quantum dot scaffold phosphors: Maximizing luminescence quantum yield via different stock environments</atitle><jtitle>Materials letters</jtitle><date>2020-01-15</date><risdate>2020</risdate><volume>259</volume><spage>126846</spage><pages>126846-</pages><artnum>126846</artnum><issn>0167-577X</issn><eissn>1873-4979</eissn><abstract>•Study presents a novel concept for quantum dots scaffold phosphors.•Graphene quantum-dots (GQDs) has utilized as the luminescent material.•High porosity maintains highest level luminescence quantum yield.•Scaffold phosphor envisioned for high-performance phosphor-converted LEDs.
This paper presents a novel concept for quantum-dots (QDs) phosphor plates using a polymer scaffold matrix. Here, graphene quantum-dots (GQDs) has utilized as the luminescent material in a polymeric scaffold prepared by free-radical polymerization followed by freeze-drying. The highly porous scaffold (porosity: ~60%, pore size in broad micron size) maintained the individual identity of the quantum dots for the beauty of high luminescence quantum yield, which is necessary for fabricating efficient phosphors. These outcomes were strongly reinforced by time-resolved photoluminescence. This study offers a systematic approach for tuning the luminescence property of quantum dots in different states such as powders, liquids, hydrogels, and freeze-dried scaffolds.</abstract><cop>Amsterdam</cop><pub>Elsevier B.V</pub><doi>10.1016/j.matlet.2019.126846</doi><orcidid>https://orcid.org/0000-0003-0255-1247</orcidid><orcidid>https://orcid.org/0000-0001-7106-7913</orcidid></addata></record> |
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| ispartof | Materials letters, 2020-01, Vol.259, p.126846, Article 126846 |
| issn | 0167-577X 1873-4979 |
| language | eng |
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| source | ScienceDirect Journals (5 years ago - present) |
| subjects | Free radical polymerization Freeze drying Graphene Graphene quantum dots Hydrogels Luminescence Luminescence quantum yield Materials science Phosphors Photoluminescence Pore size Porosity Quantum dots Scaffolds Time-resolved photoluminescence |
| title | Quantum dot scaffold phosphors: Maximizing luminescence quantum yield via different stock environments |
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