Tuning upconversion through energy migration in core-shell nanoparticles

Handle URI:
http://hdl.handle.net/10754/561902
Title:
Tuning upconversion through energy migration in core-shell nanoparticles
Authors:
Wang, Feng; Deng, Renren; Wang, Juan; Wang, Qingxiao; Han, Yu ( 0000-0003-1462-1118 ) ; Zhu, Haomiao; Chen, Xueyuan; Liu, Xiaogang
Abstract:
Photon upconversion is promising for applications such as biological imaging, data storage or solar cells. Here, we have investigated upconversion processes in a broad range of gadolinium-based nanoparticles of varying composition. We show that by rational design of a core-shell structure with a set of lanthanide ions incorporated into separated layers at precisely defined concentrations, efficient upconversion emission can be realized through gadolinium sublattice-mediated energy migration for a wide range of lanthanide activators without long-lived intermediary energy states. Furthermore, the use of the core-shell structure allows the elimination of deleterious cross-relaxation. This effect enables fine-tuning of upconversion emission through trapping of the migrating energy by the activators. Indeed, the findings described here suggest a general approach to constructing a new class of luminescent materials with tunable upconversion emissions by controlled manipulation of energy transfer within a nanoscopic region. © 2011 Macmillan Publishers Limited. All rights reserved.
KAUST Department:
Advanced Membranes and Porous Materials Research Center; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; Chemical Science Program; Core Labs; Nanostructured Functional Materials (NFM) laboratory
Publisher:
Nature Publishing Group
Journal:
Nature Materials
Issue Date:
23-Oct-2011
DOI:
10.1038/nmat3149
PubMed ID:
22019945
Type:
Article
ISSN:
14761122
Sponsors:
The bulk of the work was supported by the Singapore Ministry of Education (No. MOE2010T2-1-083), the Singapore-MIT Alliance, and the Agency for Science, Technology and Research (No. IMRE/11-1C0110). Y.H. is grateful to KAUST Global Collaborative Research for the Academic Excellence Alliance (AEA) fund. H.Z. and X. C. acknowledge the financial support from the NSFC (Nos. 10974200 and 51002151) and the 863 programs of MOST (Nos. 2009AA03Z430 and 2011AA03A407). We thank T. Nguyen, Y. Liu and L. Tan for their help in sample characterization.
Appears in Collections:
Articles; Advanced Membranes and Porous Materials Research Center; Advanced Nanofabrication, Imaging and Characterization Core Lab; Physical Sciences and Engineering (PSE) Division; Chemical Science Program

Full metadata record

DC FieldValue Language
dc.contributor.authorWang, Fengen
dc.contributor.authorDeng, Renrenen
dc.contributor.authorWang, Juanen
dc.contributor.authorWang, Qingxiaoen
dc.contributor.authorHan, Yuen
dc.contributor.authorZhu, Haomiaoen
dc.contributor.authorChen, Xueyuanen
dc.contributor.authorLiu, Xiaogangen
dc.date.accessioned2015-08-03T09:33:42Zen
dc.date.available2015-08-03T09:33:42Zen
dc.date.issued2011-10-23en
dc.identifier.issn14761122en
dc.identifier.pmid22019945en
dc.identifier.doi10.1038/nmat3149en
dc.identifier.urihttp://hdl.handle.net/10754/561902en
dc.description.abstractPhoton upconversion is promising for applications such as biological imaging, data storage or solar cells. Here, we have investigated upconversion processes in a broad range of gadolinium-based nanoparticles of varying composition. We show that by rational design of a core-shell structure with a set of lanthanide ions incorporated into separated layers at precisely defined concentrations, efficient upconversion emission can be realized through gadolinium sublattice-mediated energy migration for a wide range of lanthanide activators without long-lived intermediary energy states. Furthermore, the use of the core-shell structure allows the elimination of deleterious cross-relaxation. This effect enables fine-tuning of upconversion emission through trapping of the migrating energy by the activators. Indeed, the findings described here suggest a general approach to constructing a new class of luminescent materials with tunable upconversion emissions by controlled manipulation of energy transfer within a nanoscopic region. © 2011 Macmillan Publishers Limited. All rights reserved.en
dc.description.sponsorshipThe bulk of the work was supported by the Singapore Ministry of Education (No. MOE2010T2-1-083), the Singapore-MIT Alliance, and the Agency for Science, Technology and Research (No. IMRE/11-1C0110). Y.H. is grateful to KAUST Global Collaborative Research for the Academic Excellence Alliance (AEA) fund. H.Z. and X. C. acknowledge the financial support from the NSFC (Nos. 10974200 and 51002151) and the 863 programs of MOST (Nos. 2009AA03Z430 and 2011AA03A407). We thank T. Nguyen, Y. Liu and L. Tan for their help in sample characterization.en
dc.publisherNature Publishing Groupen
dc.titleTuning upconversion through energy migration in core-shell nanoparticlesen
dc.typeArticleen
dc.contributor.departmentAdvanced Membranes and Porous Materials Research Centeren
dc.contributor.departmentAdvanced Nanofabrication, Imaging and Characterization Core Laben
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentChemical Science Programen
dc.contributor.departmentCore Labsen
dc.contributor.departmentNanostructured Functional Materials (NFM) laboratoryen
dc.identifier.journalNature Materialsen
dc.contributor.institutionDepartment of Chemistry, National University of Singapore, 117543, Singapore, Singaporeen
dc.contributor.institutionKey Laboratory of Optoelectronic Materials Chemistry and Physics, Fujian Institute of Research on the Structure of Matter, Chinese Academy of Sciences, Fuzhou, Fujian 350002, Chinaen
dc.contributor.institutionInstitute of Materials Research and Engineering, 3 Research Link, 117602, Singapore, Singaporeen
dc.contributor.institutionSingapore-MIT Alliance, 4 Engineering Drive 3, 117576, Singapore, Singaporeen
kaust.authorWang, Qingxiaoen
kaust.authorHan, Yuen
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