Controlled Switching of Optical Emission Energies in Semiconducting Single-Walled Carbon Nanotubes
We present scanning photoluminescence (PL) microscopy of freely suspended single-walled carbon nanotubes grown by chemically assisted vapor deposition (CVD) across micron-sized open apertures. Scans of the PL emission versus excitation position show unusual “holes” having subwavelength spatial featu...
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| Veröffentlicht in: | Nano letters 2005-06, Vol.5 (6), p.1135-1138 |
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| container_end_page | 1138 |
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| container_issue | 6 |
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| container_title | Nano letters |
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| creator | Milkie, D. E Staii, C Paulson, S Hindman, E Johnson, A. T Kikkawa, J. M |
| description | We present scanning photoluminescence (PL) microscopy of freely suspended single-walled carbon nanotubes grown by chemically assisted vapor deposition (CVD) across micron-sized open apertures. Scans of the PL emission versus excitation position show unusual “holes” having subwavelength spatial features associated with abrupt blue shifts of the emission energy. By varying the excitation polarization, energy, intensity, and position, we demonstrate that optical switching in some nanotubes is controllable in a highly nonlinear manner by adjusting the nonequilibrium carrier density in the nanotube. Technologically important attributes include large spectral contrast between on/off states at room temperature, a dramatic response to small changes in light intensity near threshold, and the possibility that electrical charge injection could also be used to control emission energies. |
| doi_str_mv | 10.1021/nl050688j |
| format | Article |
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Technologically important attributes include large spectral contrast between on/off states at room temperature, a dramatic response to small changes in light intensity near threshold, and the possibility that electrical charge injection could also be used to control emission energies.</description><identifier>ISSN: 1530-6984</identifier><identifier>EISSN: 1530-6992</identifier><identifier>DOI: 10.1021/nl050688j</identifier><identifier>PMID: 15943456</identifier><language>eng</language><publisher>Washington, DC: American Chemical Society</publisher><subject>Applied sciences ; Condensed matter: structure, mechanical and thermal properties ; Crystallization ; Electronics ; Electrons ; Exact sciences and technology ; Microelectronic fabrication (materials and surfaces technology) ; Microscopy, Electron, Transmission ; Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals ; Nanotechnology - methods ; Nanotubes - chemistry ; Nanotubes, Carbon - chemistry ; Nitrogen - chemistry ; Normal Distribution ; Physics ; Semiconductor electronics. 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E</creatorcontrib><creatorcontrib>Staii, C</creatorcontrib><creatorcontrib>Paulson, S</creatorcontrib><creatorcontrib>Hindman, E</creatorcontrib><creatorcontrib>Johnson, A. T</creatorcontrib><creatorcontrib>Kikkawa, J. M</creatorcontrib><title>Controlled Switching of Optical Emission Energies in Semiconducting Single-Walled Carbon Nanotubes</title><title>Nano letters</title><addtitle>Nano Lett</addtitle><description>We present scanning photoluminescence (PL) microscopy of freely suspended single-walled carbon nanotubes grown by chemically assisted vapor deposition (CVD) across micron-sized open apertures. Scans of the PL emission versus excitation position show unusual “holes” having subwavelength spatial features associated with abrupt blue shifts of the emission energy. By varying the excitation polarization, energy, intensity, and position, we demonstrate that optical switching in some nanotubes is controllable in a highly nonlinear manner by adjusting the nonequilibrium carrier density in the nanotube. Technologically important attributes include large spectral contrast between on/off states at room temperature, a dramatic response to small changes in light intensity near threshold, and the possibility that electrical charge injection could also be used to control emission energies.</description><subject>Applied sciences</subject><subject>Condensed matter: structure, mechanical and thermal properties</subject><subject>Crystallization</subject><subject>Electronics</subject><subject>Electrons</subject><subject>Exact sciences and technology</subject><subject>Microelectronic fabrication (materials and surfaces technology)</subject><subject>Microscopy, Electron, Transmission</subject><subject>Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals</subject><subject>Nanotechnology - methods</subject><subject>Nanotubes - chemistry</subject><subject>Nanotubes, Carbon - chemistry</subject><subject>Nitrogen - chemistry</subject><subject>Normal Distribution</subject><subject>Physics</subject><subject>Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices</subject><subject>Semiconductors</subject><subject>Silicon - chemistry</subject><subject>Spectrophotometry</subject><subject>Structure of solids and liquids; crystallography</subject><subject>Temperature</subject><issn>1530-6984</issn><issn>1530-6992</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNpt0L1OwzAUBWALgWgpDLwAygISQ8BOYiceUVR-pIoOBTFGjnNdXKV2sRMh3h6XRu3C4uvh07lXB6FLgu8ITsi9aTHFrChWR2hMaIpjxnlyvP8X2Qideb_CGPOU4lM0IpRnaUbZGNWlNZ2zbQtNtPjWnfzUZhlZFc03nZaijaZr7b22JpoacEsNPtImWsBaS2uaXnZbvghPC_GH-IsphauDfxXGdn0N_hydKNF6uBjmBL0_Tt_K53g2f3opH2axyDDvYkkLhaEgQpBaMUWk4AxUw5nM0jBZRjnNqQApm6JmGatxEhQwhdOcFJClE3Szy904-9WD76pwuoS2FQZs7yuWc5LjZAtvd1A6670DVW2cXgv3UxFcbQut9oUGezWE9vUamoMcGgzgegDCh76UE0Zqf3CsCCjnByekr1a2dyZ08c_CX8suiwQ</recordid><startdate>20050601</startdate><enddate>20050601</enddate><creator>Milkie, D. 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| subjects | Applied sciences Condensed matter: structure, mechanical and thermal properties Crystallization Electronics Electrons Exact sciences and technology Microelectronic fabrication (materials and surfaces technology) Microscopy, Electron, Transmission Nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals Nanotechnology - methods Nanotubes - chemistry Nanotubes, Carbon - chemistry Nitrogen - chemistry Normal Distribution Physics Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices Semiconductors Silicon - chemistry Spectrophotometry Structure of solids and liquids crystallography Temperature |
| title | Controlled Switching of Optical Emission Energies in Semiconducting Single-Walled Carbon Nanotubes |
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