Synchronized surface plasmon generation and scattering in organic light emitting diodes: measurements removing optical interference effect
It has been believed that the energy transfer of one exciton arising in an organic layer creates one SPP on a proximally-positioned metal surface. However, because excitons in the organic layer are close to one another, there is the possibility that multiple SPPs are generated in phase, entering an...
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| Veröffentlicht in: | Journal of physics. Conference series 2018-09, Vol.1092 (1), p.12054 |
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| creator | Ishiguro, T Kasahara, K Ikeda, N Sugimoto, Y |
| description | It has been believed that the energy transfer of one exciton arising in an organic layer creates one SPP on a proximally-positioned metal surface. However, because excitons in the organic layer are close to one another, there is the possibility that multiple SPPs are generated in phase, entering an appearance of constructive interference among the scattered electromagnetic waves. This should lead to an increase in SPP scattering probability effectively. To investigate the possibility and light enhancement associated with this, we prepared a device consisting of Alq3 on a quarter-wavelength dielectric multilayer film/glass as a reference instead of the usual Alq3/glass substrate. This reference device eliminated the influence of complicated optical interference, and made it possible to calculate SPP-mediated light enhancement accurately. The contributions of SPPs and non-radiative components to light emission were adjusted in the calculation as the results corresponded with the measured enhancement dependence on Alq3 thickness. As a result, it was found that the SPP scattering rate was larger than the ordinary calculation based on the assumption that excitons create SPPs randomly. In-phase energy transfer from excitons to SPPs is supported by evidences obtained from this study. |
| doi_str_mv | 10.1088/1742-6596/1092/1/012054 |
| format | Article |
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However, because excitons in the organic layer are close to one another, there is the possibility that multiple SPPs are generated in phase, entering an appearance of constructive interference among the scattered electromagnetic waves. This should lead to an increase in SPP scattering probability effectively. To investigate the possibility and light enhancement associated with this, we prepared a device consisting of Alq3 on a quarter-wavelength dielectric multilayer film/glass as a reference instead of the usual Alq3/glass substrate. This reference device eliminated the influence of complicated optical interference, and made it possible to calculate SPP-mediated light enhancement accurately. The contributions of SPPs and non-radiative components to light emission were adjusted in the calculation as the results corresponded with the measured enhancement dependence on Alq3 thickness. As a result, it was found that the SPP scattering rate was larger than the ordinary calculation based on the assumption that excitons create SPPs randomly. In-phase energy transfer from excitons to SPPs is supported by evidences obtained from this study.</description><identifier>ISSN: 1742-6588</identifier><identifier>EISSN: 1742-6596</identifier><identifier>DOI: 10.1088/1742-6596/1092/1/012054</identifier><language>eng</language><publisher>Bristol: IOP Publishing</publisher><subject>Electromagnetic radiation ; Energy transfer ; Excitons ; Glass substrates ; Interference ; Light emission ; Mathematical analysis ; Metal surfaces ; Multilayers ; Organic light emitting diodes ; Scattering</subject><ispartof>Journal of physics. Conference series, 2018-09, Vol.1092 (1), p.12054</ispartof><rights>Published under licence by IOP Publishing Ltd</rights><rights>2018. This work is published under http://creativecommons.org/licenses/by/3.0/ (the “License”). 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Conference series</title><addtitle>J. Phys.: Conf. Ser</addtitle><description>It has been believed that the energy transfer of one exciton arising in an organic layer creates one SPP on a proximally-positioned metal surface. However, because excitons in the organic layer are close to one another, there is the possibility that multiple SPPs are generated in phase, entering an appearance of constructive interference among the scattered electromagnetic waves. This should lead to an increase in SPP scattering probability effectively. To investigate the possibility and light enhancement associated with this, we prepared a device consisting of Alq3 on a quarter-wavelength dielectric multilayer film/glass as a reference instead of the usual Alq3/glass substrate. This reference device eliminated the influence of complicated optical interference, and made it possible to calculate SPP-mediated light enhancement accurately. The contributions of SPPs and non-radiative components to light emission were adjusted in the calculation as the results corresponded with the measured enhancement dependence on Alq3 thickness. As a result, it was found that the SPP scattering rate was larger than the ordinary calculation based on the assumption that excitons create SPPs randomly. 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Conference series</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Ishiguro, T</au><au>Kasahara, K</au><au>Ikeda, N</au><au>Sugimoto, Y</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Synchronized surface plasmon generation and scattering in organic light emitting diodes: measurements removing optical interference effect</atitle><jtitle>Journal of physics. Conference series</jtitle><addtitle>J. Phys.: Conf. Ser</addtitle><date>2018-09-01</date><risdate>2018</risdate><volume>1092</volume><issue>1</issue><spage>12054</spage><pages>12054-</pages><issn>1742-6588</issn><eissn>1742-6596</eissn><abstract>It has been believed that the energy transfer of one exciton arising in an organic layer creates one SPP on a proximally-positioned metal surface. However, because excitons in the organic layer are close to one another, there is the possibility that multiple SPPs are generated in phase, entering an appearance of constructive interference among the scattered electromagnetic waves. This should lead to an increase in SPP scattering probability effectively. To investigate the possibility and light enhancement associated with this, we prepared a device consisting of Alq3 on a quarter-wavelength dielectric multilayer film/glass as a reference instead of the usual Alq3/glass substrate. This reference device eliminated the influence of complicated optical interference, and made it possible to calculate SPP-mediated light enhancement accurately. The contributions of SPPs and non-radiative components to light emission were adjusted in the calculation as the results corresponded with the measured enhancement dependence on Alq3 thickness. 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| subjects | Electromagnetic radiation Energy transfer Excitons Glass substrates Interference Light emission Mathematical analysis Metal surfaces Multilayers Organic light emitting diodes Scattering |
| title | Synchronized surface plasmon generation and scattering in organic light emitting diodes: measurements removing optical interference effect |
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