Excitonic improvement of colloidal nanocrystals in salt powder matrix for quality lighting and color enrichment
buir.contributor.author | Demir, Hilmi Volkan | |
buir.contributor.orcid | Demir, Hilmi Volkan|0000-0003-1793-112X | |
dc.citation.epage | A84 | en_US |
dc.citation.issueNumber | 2 | en_US |
dc.citation.spage | A74 | en_US |
dc.citation.volumeNumber | 24 | en_US |
dc.contributor.author | Erdem, T. | en_US |
dc.contributor.author | Soran-Erdem, Z. | en_US |
dc.contributor.author | Kelestemur, Y. | en_US |
dc.contributor.author | Gaponik, N. | en_US |
dc.contributor.author | Demir, Hilmi Volkan | en_US |
dc.date.accessioned | 2018-04-12T10:57:25Z | |
dc.date.available | 2018-04-12T10:57:25Z | |
dc.date.issued | 2016 | en_US |
dc.department | Institute of Materials Science and Nanotechnology (UNAM) | en_US |
dc.department | Department of Electrical and Electronics Engineering | en_US |
dc.department | Department of Physics | en_US |
dc.description.abstract | Here we report excitonic improvement in color-converting colloidal nanocrystal powders enabled by co-integrating nonpolar greenand red-emitting nanocrystal energy transfer pairs into a single LiCl salt matrix. This leads to nonradiative energy transfer (NRET) between the cointegrated nanocrystals in the host matrix. Here we systematically studied the resulting NRET process by varying donor and acceptor concentrations in the powders. We observed that NRET is a strong function of both of the nanocrystal concentrations and that NRET efficiency increases with increasing acceptor concentration. Nevertheless, with increasing donor concentration in the powders, NRET efficiency was found to first increase (up to a maximum level of 53.9%) but then to decrease. As a device demonstrator, we employed these NRET-improved nanocrystal powders as color-converters on blue light-emitting diodes (LEDs), with the resulting hybrid LED exhibiting a luminous efficiency >70 lm/Welect . The proposed excitonic nanocrystal powders potentially hold great promise for quality lighting and color enrichment applications. | en_US |
dc.description.provenance | Made available in DSpace on 2018-04-12T10:57:25Z (GMT). No. of bitstreams: 1 bilkent-research-paper.pdf: 179475 bytes, checksum: ea0bedeb05ac9ccfb983c327e155f0c2 (MD5) Previous issue date: 2016 | en |
dc.identifier.doi | 10.1364/OE.24.000A74 | en_US |
dc.identifier.eissn | 1094-4087 | en_US |
dc.identifier.uri | http://hdl.handle.net/11693/36920 | |
dc.language.iso | English | en_US |
dc.publisher | OSA - The Optical Society | en_US |
dc.relation.isversionof | http://dx.doi.org/10.1364/OE.24.000A74 | en_US |
dc.source.title | Optics Express | en_US |
dc.subject | Color | en_US |
dc.subject | Energy transfer | en_US |
dc.subject | Light emitting diodes | en_US |
dc.subject | Lighting | en_US |
dc.subject | Nanocrystals | en_US |
dc.subject | Powders | en_US |
dc.subject | Semiconducting gallium compounds | en_US |
dc.subject | Acceptor concentrations | en_US |
dc.subject | Blue light emitting diodes | en_US |
dc.subject | Colloidal nanocrystals | en_US |
dc.subject | Device demonstrators | en_US |
dc.subject | Donor concentrations | en_US |
dc.subject | Luminous efficiency | en_US |
dc.subject | Nanocrystal powders | en_US |
dc.subject | Nonradiative energy transfer | en_US |
dc.subject | Nanocrystalline powders | en_US |
dc.title | Excitonic improvement of colloidal nanocrystals in salt powder matrix for quality lighting and color enrichment | en_US |
dc.type | Article | en_US |
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