Modulated Fluorescence of Colloidal Quantum Dots Embedded in a Porous Alumina Membrane
The fluorescence spectrum of CdSe core-CdS/ZnS shell colloidal quantum dots (QDs) embedded in porous alumina membrane was studied. Small peaks, superimposed on the principal QD fluorescence spectrum, were observed. Finite-difference time-domain simulation indicates that the QD point radiation emitti...
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| Veröffentlicht in: | The journal of physical chemistry. B 2013-11, Vol.117 (45), p.14151-14156 |
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| container_issue | 45 |
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| container_title | The journal of physical chemistry. B |
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| creator | Xu, Hao Li, Li Manneberg, Otto Russom, Aman Gylfason, Kristinn B Brismar, Hjalmar Fu, Ying |
| description | The fluorescence spectrum of CdSe core-CdS/ZnS shell colloidal quantum dots (QDs) embedded in porous alumina membrane was studied. Small peaks, superimposed on the principal QD fluorescence spectrum, were observed. Finite-difference time-domain simulation indicates that the QD point radiation emitting from within the membrane is strongly modulated by the photonic band structure introduced by the membrane pores, leading to the observed fine spectral features. Moreover, the principal QD fluorescence peak red-shifted when the optical excitation power was increased, which is attributed to QD material heating due to emitted phonons when the photoexcited electron and hole relax nonradiatively from high-energy states to the ground exciton state before fluorescence. |
| doi_str_mv | 10.1021/jp409132e |
| format | Article |
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Small peaks, superimposed on the principal QD fluorescence spectrum, were observed. Finite-difference time-domain simulation indicates that the QD point radiation emitting from within the membrane is strongly modulated by the photonic band structure introduced by the membrane pores, leading to the observed fine spectral features. Moreover, the principal QD fluorescence peak red-shifted when the optical excitation power was increased, which is attributed to QD material heating due to emitted phonons when the photoexcited electron and hole relax nonradiatively from high-energy states to the ground exciton state before fluorescence.</description><identifier>ISSN: 1520-6106</identifier><identifier>ISSN: 1520-5207</identifier><identifier>EISSN: 1520-5207</identifier><identifier>DOI: 10.1021/jp409132e</identifier><identifier>PMID: 24134567</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Aluminum oxide ; Aluminum Oxide - chemistry ; Analytisk kemi ; Atom- och molekylfysik och optik ; Cadmium Compounds - chemistry ; Colloidal quantum dots ; Colloids ; Colloids - chemistry ; Condensed matter: electronic structure, electrical, magnetic, and optical properties ; Electrons ; Emittance ; Exact sciences and technology ; Excitation ; Finite difference time domain simulations ; Fluorescence ; Fluorescence peak ; Fluorescence spectra ; Fysik ; Heating ; Kemi ; Membranes ; Naturvetenskap ; 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 ; Photoexcited electrons ; Photonic band structures ; Photons ; Physics ; Porosity ; Porous alumina membranes ; Quantum dots ; Quantum Dots - chemistry ; Selenium Compounds - chemistry ; Spectral feature ; Spectrometry, Fluorescence ; Sulfides - chemistry ; Zinc Compounds - chemistry</subject><ispartof>The journal of physical chemistry. 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B</title><addtitle>J. Phys. Chem. B</addtitle><description>The fluorescence spectrum of CdSe core-CdS/ZnS shell colloidal quantum dots (QDs) embedded in porous alumina membrane was studied. Small peaks, superimposed on the principal QD fluorescence spectrum, were observed. Finite-difference time-domain simulation indicates that the QD point radiation emitting from within the membrane is strongly modulated by the photonic band structure introduced by the membrane pores, leading to the observed fine spectral features. Moreover, the principal QD fluorescence peak red-shifted when the optical excitation power was increased, which is attributed to QD material heating due to emitted phonons when the photoexcited electron and hole relax nonradiatively from high-energy states to the ground exciton state before fluorescence.</description><subject>Aluminum oxide</subject><subject>Aluminum Oxide - chemistry</subject><subject>Analytisk kemi</subject><subject>Atom- och molekylfysik och optik</subject><subject>Cadmium Compounds - chemistry</subject><subject>Colloidal quantum dots</subject><subject>Colloids</subject><subject>Colloids - chemistry</subject><subject>Condensed matter: electronic structure, electrical, magnetic, and optical properties</subject><subject>Electrons</subject><subject>Emittance</subject><subject>Exact sciences and technology</subject><subject>Excitation</subject><subject>Finite difference time domain simulations</subject><subject>Fluorescence</subject><subject>Fluorescence peak</subject><subject>Fluorescence spectra</subject><subject>Fysik</subject><subject>Heating</subject><subject>Kemi</subject><subject>Membranes</subject><subject>Naturvetenskap</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>Photoexcited electrons</subject><subject>Photonic band structures</subject><subject>Photons</subject><subject>Physics</subject><subject>Porosity</subject><subject>Porous alumina membranes</subject><subject>Quantum dots</subject><subject>Quantum Dots - chemistry</subject><subject>Selenium Compounds - chemistry</subject><subject>Spectral feature</subject><subject>Spectrometry, Fluorescence</subject><subject>Sulfides - chemistry</subject><subject>Zinc Compounds - chemistry</subject><issn>1520-6106</issn><issn>1520-5207</issn><issn>1520-5207</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2013</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqF0s1vFCEUAHBiNLZWD_4DhouJHkb5Zua42ba2SRs10V4JDKCzZYYVhhj_e9nsdPfix4HwQn48Xt4DgJcYvcOI4PebLUMdpsQ9AqeYE9TUJR8vscBInIBnOW8QIpy04ik4IQxTxoU8BXe30ZagZ2fhZSgxudy7qXcweriOIcTB6gA_Fz3NZYTncc7wYjTO2uqHCWr4KaZYMlyFMg6ThrduNElP7jl44nXI7sWyn4Gvlxdf1lfNzccP1-vVTaM5w3PTsp52UmprOGfaS-I1o700xrhOOm09MbgT2EgtPCGUtLZK0dXYi1YgTs9As8-bf7ptMWqbhlGnXyrqQS1H9zVyihNBEKu--6vfpmiPlx4uYiKlEBL_-63z4W6lYvqm7ufvClNB-M6_2fua-EdxeVbjULsbQu1P7ZnCktNaFmrx_ynjHeaMih19u6d9ijkn5w91YKR2v0EdfkO1r5a0xYzOHuTD-Ct4vQCdex18HV0_5KOTXa2xbY9O91ltYklTHeofHvwN4QLIyw</recordid><startdate>20131114</startdate><enddate>20131114</enddate><creator>Xu, Hao</creator><creator>Li, Li</creator><creator>Manneberg, Otto</creator><creator>Russom, Aman</creator><creator>Gylfason, Kristinn B</creator><creator>Brismar, Hjalmar</creator><creator>Fu, Ying</creator><general>American Chemical Society</general><scope>IQODW</scope><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>7X8</scope><scope>7QF</scope><scope>7QQ</scope><scope>7SR</scope><scope>7U5</scope><scope>8BQ</scope><scope>8FD</scope><scope>JG9</scope><scope>L7M</scope><scope>ADTPV</scope><scope>AOWAS</scope><scope>D8V</scope></search><sort><creationdate>20131114</creationdate><title>Modulated Fluorescence of Colloidal Quantum Dots Embedded in a Porous Alumina Membrane</title><author>Xu, Hao ; Li, Li ; Manneberg, Otto ; Russom, Aman ; Gylfason, Kristinn B ; Brismar, Hjalmar ; Fu, Ying</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-a541t-84c3977adb554af72fa43c7bbbe97eadf2b1961b7a6f22328ddb569f22f686053</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2013</creationdate><topic>Aluminum oxide</topic><topic>Aluminum Oxide - chemistry</topic><topic>Analytisk kemi</topic><topic>Atom- och molekylfysik och optik</topic><topic>Cadmium Compounds - chemistry</topic><topic>Colloidal quantum dots</topic><topic>Colloids</topic><topic>Colloids - chemistry</topic><topic>Condensed matter: electronic structure, electrical, magnetic, and optical properties</topic><topic>Electrons</topic><topic>Emittance</topic><topic>Exact sciences and technology</topic><topic>Excitation</topic><topic>Finite difference time domain simulations</topic><topic>Fluorescence</topic><topic>Fluorescence peak</topic><topic>Fluorescence spectra</topic><topic>Fysik</topic><topic>Heating</topic><topic>Kemi</topic><topic>Membranes</topic><topic>Naturvetenskap</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>Photoexcited electrons</topic><topic>Photonic band structures</topic><topic>Photons</topic><topic>Physics</topic><topic>Porosity</topic><topic>Porous alumina membranes</topic><topic>Quantum dots</topic><topic>Quantum Dots - chemistry</topic><topic>Selenium Compounds - chemistry</topic><topic>Spectral feature</topic><topic>Spectrometry, Fluorescence</topic><topic>Sulfides - chemistry</topic><topic>Zinc Compounds - chemistry</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Xu, Hao</creatorcontrib><creatorcontrib>Li, Li</creatorcontrib><creatorcontrib>Manneberg, Otto</creatorcontrib><creatorcontrib>Russom, Aman</creatorcontrib><creatorcontrib>Gylfason, Kristinn B</creatorcontrib><creatorcontrib>Brismar, Hjalmar</creatorcontrib><creatorcontrib>Fu, Ying</creatorcontrib><collection>Pascal-Francis</collection><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>MEDLINE - Academic</collection><collection>Aluminium Industry Abstracts</collection><collection>Ceramic Abstracts</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><collection>SwePub</collection><collection>SwePub Articles</collection><collection>SWEPUB Kungliga Tekniska Högskolan</collection><jtitle>The journal of physical chemistry. B</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Xu, Hao</au><au>Li, Li</au><au>Manneberg, Otto</au><au>Russom, Aman</au><au>Gylfason, Kristinn B</au><au>Brismar, Hjalmar</au><au>Fu, Ying</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Modulated Fluorescence of Colloidal Quantum Dots Embedded in a Porous Alumina Membrane</atitle><jtitle>The journal of physical chemistry. B</jtitle><addtitle>J. Phys. Chem. B</addtitle><date>2013-11-14</date><risdate>2013</risdate><volume>117</volume><issue>45</issue><spage>14151</spage><epage>14156</epage><pages>14151-14156</pages><issn>1520-6106</issn><issn>1520-5207</issn><eissn>1520-5207</eissn><abstract>The fluorescence spectrum of CdSe core-CdS/ZnS shell colloidal quantum dots (QDs) embedded in porous alumina membrane was studied. Small peaks, superimposed on the principal QD fluorescence spectrum, were observed. Finite-difference time-domain simulation indicates that the QD point radiation emitting from within the membrane is strongly modulated by the photonic band structure introduced by the membrane pores, leading to the observed fine spectral features. Moreover, the principal QD fluorescence peak red-shifted when the optical excitation power was increased, which is attributed to QD material heating due to emitted phonons when the photoexcited electron and hole relax nonradiatively from high-energy states to the ground exciton state before fluorescence.</abstract><cop>Washington, DC</cop><pub>American Chemical Society</pub><pmid>24134567</pmid><doi>10.1021/jp409132e</doi><tpages>6</tpages></addata></record> |
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| subjects | Aluminum oxide Aluminum Oxide - chemistry Analytisk kemi Atom- och molekylfysik och optik Cadmium Compounds - chemistry Colloidal quantum dots Colloids Colloids - chemistry Condensed matter: electronic structure, electrical, magnetic, and optical properties Electrons Emittance Exact sciences and technology Excitation Finite difference time domain simulations Fluorescence Fluorescence peak Fluorescence spectra Fysik Heating Kemi Membranes Naturvetenskap 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 Photoexcited electrons Photonic band structures Photons Physics Porosity Porous alumina membranes Quantum dots Quantum Dots - chemistry Selenium Compounds - chemistry Spectral feature Spectrometry, Fluorescence Sulfides - chemistry Zinc Compounds - chemistry |
| title | Modulated Fluorescence of Colloidal Quantum Dots Embedded in a Porous Alumina Membrane |
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