Exciton Localization and Optical Properties Improvement in Nanocrystal-Embedded ZnO Core–Shell Nanowires
We present a comparative investigation of the morphological, structural, and optical properties of vertically aligned ZnO nanowires (NWs) before and after high energy argon ion (Ar+) milling. It is found that the outer regions of the as-grown sample change from crystalline to amorphous, and ZnO core...
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| Veröffentlicht in: | Nano letters 2013-02, Vol.13 (2), p.734-739 |
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| container_title | Nano letters |
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| creator | Chen, Rui Ye, Quan-Lin He, Tingchao Ta, Van Duong Ying, Yongjun Tay, Yee Yan Wu, Tom Sun, Handong |
| description | We present a comparative investigation of the morphological, structural, and optical properties of vertically aligned ZnO nanowires (NWs) before and after high energy argon ion (Ar+) milling. It is found that the outer regions of the as-grown sample change from crystalline to amorphous, and ZnO core–shell NWs with ZnO nanocrystals embedded are formed after Ar+ milling. Optical properties of the ZnO NWs have been investigated systematically through power and temperature dependent photoluminescence measurements, and the phenomenon of exciton localization as well as the relevant favorable photoluminescence characteristics is elucidated. Interestingly, under high density optical pumping at room temperature, coherent random lasing action is observed, which is ascribed to exciton localization and strong scattering. Our results on the unique optical properties of localized exciton in ZnO core–shell nanostructures shed light on developing stable and high-efficiency excitonic optoelectronic devices such as light-emitting diodes and lasers. |
| doi_str_mv | 10.1021/nl304433m |
| format | Article |
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It is found that the outer regions of the as-grown sample change from crystalline to amorphous, and ZnO core–shell NWs with ZnO nanocrystals embedded are formed after Ar+ milling. Optical properties of the ZnO NWs have been investigated systematically through power and temperature dependent photoluminescence measurements, and the phenomenon of exciton localization as well as the relevant favorable photoluminescence characteristics is elucidated. Interestingly, under high density optical pumping at room temperature, coherent random lasing action is observed, which is ascribed to exciton localization and strong scattering. Our results on the unique optical properties of localized exciton in ZnO core–shell nanostructures shed light on developing stable and high-efficiency excitonic optoelectronic devices such as light-emitting diodes and lasers.</description><identifier>ISSN: 1530-6984</identifier><identifier>EISSN: 1530-6992</identifier><identifier>DOI: 10.1021/nl304433m</identifier><identifier>PMID: 23339553</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Applied sciences ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Cross-disciplinary physics: materials science; rheology ; Electronics ; Exact sciences and technology ; Excitation ; Localization ; Materials science ; Nanocrystalline materials ; Nanocrystals ; Nanoscale materials and structures: fabrication and characterization ; Nanostructure ; Nanowires ; Optical properties ; Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation ; Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures ; Optoelectronic devices ; Photoluminescence ; Physics ; Position (location) ; Quantum wires ; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices ; Zinc oxide</subject><ispartof>Nano letters, 2013-02, Vol.13 (2), p.734-739</ispartof><rights>Copyright © 2013 American Chemical Society</rights><rights>2014 INIST-CNRS</rights><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-a444t-54050ddcaaa09faed18abf92c6605fa7757ef4539be4f4cee336dbbd564cfbc73</citedby><cites>FETCH-LOGICAL-a444t-54050ddcaaa09faed18abf92c6605fa7757ef4539be4f4cee336dbbd564cfbc73</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://pubs.acs.org/doi/pdf/10.1021/nl304433m$$EPDF$$P50$$Gacs$$H</linktopdf><linktohtml>$$Uhttps://pubs.acs.org/doi/10.1021/nl304433m$$EHTML$$P50$$Gacs$$H</linktohtml><link.rule.ids>314,780,784,2756,27067,27915,27916,56729,56779</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=27145417$$DView record in Pascal Francis$$Hfree_for_read</backlink><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/23339553$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Chen, Rui</creatorcontrib><creatorcontrib>Ye, Quan-Lin</creatorcontrib><creatorcontrib>He, Tingchao</creatorcontrib><creatorcontrib>Ta, Van Duong</creatorcontrib><creatorcontrib>Ying, Yongjun</creatorcontrib><creatorcontrib>Tay, Yee Yan</creatorcontrib><creatorcontrib>Wu, Tom</creatorcontrib><creatorcontrib>Sun, Handong</creatorcontrib><title>Exciton Localization and Optical Properties Improvement in Nanocrystal-Embedded ZnO Core–Shell Nanowires</title><title>Nano letters</title><addtitle>Nano Lett</addtitle><description>We present a comparative investigation of the morphological, structural, and optical properties of vertically aligned ZnO nanowires (NWs) before and after high energy argon ion (Ar+) milling. It is found that the outer regions of the as-grown sample change from crystalline to amorphous, and ZnO core–shell NWs with ZnO nanocrystals embedded are formed after Ar+ milling. Optical properties of the ZnO NWs have been investigated systematically through power and temperature dependent photoluminescence measurements, and the phenomenon of exciton localization as well as the relevant favorable photoluminescence characteristics is elucidated. Interestingly, under high density optical pumping at room temperature, coherent random lasing action is observed, which is ascribed to exciton localization and strong scattering. Our results on the unique optical properties of localized exciton in ZnO core–shell nanostructures shed light on developing stable and high-efficiency excitonic optoelectronic devices such as light-emitting diodes and lasers.</description><subject>Applied sciences</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Cross-disciplinary physics: materials science; rheology</subject><subject>Electronics</subject><subject>Exact sciences and technology</subject><subject>Excitation</subject><subject>Localization</subject><subject>Materials science</subject><subject>Nanocrystalline materials</subject><subject>Nanocrystals</subject><subject>Nanoscale materials and structures: fabrication and characterization</subject><subject>Nanostructure</subject><subject>Nanowires</subject><subject>Optical properties</subject><subject>Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation</subject><subject>Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures</subject><subject>Optoelectronic devices</subject><subject>Photoluminescence</subject><subject>Physics</subject><subject>Position (location)</subject><subject>Quantum wires</subject><subject>Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices</subject><subject>Zinc oxide</subject><issn>1530-6984</issn><issn>1530-6992</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><recordid>eNptkM9OGzEQhy1UBAF64AWqvVSCw1J7be-yxypK20gRQSpcelnN2mPhaNdO7U1LOPEOfUOeBAMhufQ0f_Rp5qePkFNGLxgt2BfXcSoE5_0eGTHJaV7WdfFh21-KQ3IU44JSWnNJD8hhwTmvpeQjspjcKzt4l828gs4-wGDTAE5n8-Vg0yq7Dn6JYbAYs2m_DP4P9uiGzLrsCpxXYR0H6PJJ36LWqLNfbp6NfcCnx38_77DrXqm_NmA8IfsGuogfN_WY3H6b3Ix_5LP59-n46ywHIcSQS0El1VoBAK0NoGaX0Jq6UGVJpYGqkhUaIXndojBCIXJe6rbVshTKtKrix-Ts7W4K-3uFcWh6G1WKAg79KjasKov0gss6oedvqAo-xoCmWQbbQ1g3jDYvaput2sR-2pxdtT3qLfnuMgGfNwDEJM4EcMrGHVcxIQWrdhyo2Cz8Krhk4z8PnwGxG4_3</recordid><startdate>20130213</startdate><enddate>20130213</enddate><creator>Chen, Rui</creator><creator>Ye, Quan-Lin</creator><creator>He, Tingchao</creator><creator>Ta, Van Duong</creator><creator>Ying, Yongjun</creator><creator>Tay, Yee Yan</creator><creator>Wu, Tom</creator><creator>Sun, Handong</creator><general>American Chemical Society</general><scope>IQODW</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope></search><sort><creationdate>20130213</creationdate><title>Exciton Localization and Optical Properties Improvement in Nanocrystal-Embedded ZnO Core–Shell Nanowires</title><author>Chen, Rui ; Ye, Quan-Lin ; He, Tingchao ; Ta, Van Duong ; Ying, Yongjun ; Tay, Yee Yan ; Wu, Tom ; Sun, Handong</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a444t-54050ddcaaa09faed18abf92c6605fa7757ef4539be4f4cee336dbbd564cfbc73</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Applied sciences</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Cross-disciplinary physics: materials science; rheology</topic><topic>Electronics</topic><topic>Exact sciences and technology</topic><topic>Excitation</topic><topic>Localization</topic><topic>Materials science</topic><topic>Nanocrystalline materials</topic><topic>Nanocrystals</topic><topic>Nanoscale materials and structures: fabrication and characterization</topic><topic>Nanostructure</topic><topic>Nanowires</topic><topic>Optical properties</topic><topic>Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation</topic><topic>Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures</topic><topic>Optoelectronic devices</topic><topic>Photoluminescence</topic><topic>Physics</topic><topic>Position (location)</topic><topic>Quantum wires</topic><topic>Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices</topic><topic>Zinc oxide</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Chen, Rui</creatorcontrib><creatorcontrib>Ye, Quan-Lin</creatorcontrib><creatorcontrib>He, Tingchao</creatorcontrib><creatorcontrib>Ta, Van Duong</creatorcontrib><creatorcontrib>Ying, Yongjun</creatorcontrib><creatorcontrib>Tay, Yee Yan</creatorcontrib><creatorcontrib>Wu, Tom</creatorcontrib><creatorcontrib>Sun, Handong</creatorcontrib><collection>Pascal-Francis</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Engineered Materials Abstracts</collection><collection>Solid State and Superconductivity Abstracts</collection><collection>METADEX</collection><collection>Technology Research Database</collection><collection>Materials Research Database</collection><collection>Advanced Technologies Database with Aerospace</collection><jtitle>Nano letters</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Chen, Rui</au><au>Ye, Quan-Lin</au><au>He, Tingchao</au><au>Ta, Van Duong</au><au>Ying, Yongjun</au><au>Tay, Yee Yan</au><au>Wu, Tom</au><au>Sun, Handong</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Exciton Localization and Optical Properties Improvement in Nanocrystal-Embedded ZnO Core–Shell Nanowires</atitle><jtitle>Nano letters</jtitle><addtitle>Nano Lett</addtitle><date>2013-02-13</date><risdate>2013</risdate><volume>13</volume><issue>2</issue><spage>734</spage><epage>739</epage><pages>734-739</pages><issn>1530-6984</issn><eissn>1530-6992</eissn><abstract>We present a comparative investigation of the morphological, structural, and optical properties of vertically aligned ZnO nanowires (NWs) before and after high energy argon ion (Ar+) milling. It is found that the outer regions of the as-grown sample change from crystalline to amorphous, and ZnO core–shell NWs with ZnO nanocrystals embedded are formed after Ar+ milling. Optical properties of the ZnO NWs have been investigated systematically through power and temperature dependent photoluminescence measurements, and the phenomenon of exciton localization as well as the relevant favorable photoluminescence characteristics is elucidated. Interestingly, under high density optical pumping at room temperature, coherent random lasing action is observed, which is ascribed to exciton localization and strong scattering. Our results on the unique optical properties of localized exciton in ZnO core–shell nanostructures shed light on developing stable and high-efficiency excitonic optoelectronic devices such as light-emitting diodes and lasers.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>23339553</pmid><doi>10.1021/nl304433m</doi><tpages>6</tpages></addata></record> |
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| subjects | Applied sciences Condensed matter: electronic structure, electrical, magnetic, and optical properties Cross-disciplinary physics: materials science rheology Electronics Exact sciences and technology Excitation Localization Materials science Nanocrystalline materials Nanocrystals Nanoscale materials and structures: fabrication and characterization Nanostructure Nanowires Optical properties Optical properties and condensed-matter spectroscopy and other interactions of matter with particles and radiation Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures Optoelectronic devices Photoluminescence Physics Position (location) Quantum wires Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Zinc oxide |
| title | Exciton Localization and Optical Properties Improvement in Nanocrystal-Embedded ZnO Core–Shell Nanowires |
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