Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/44983
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dc.contributor.authorLin, H.Y.en_US
dc.contributor.author戴慶良zh_TW
dc.contributor.authorLee, J.H.en_US
dc.contributor.authorWei, M.K.en_US
dc.contributor.authorDai, C.L.en_US
dc.contributor.authorWu, C.F.en_US
dc.contributor.authorHo, Y.H.en_US
dc.contributor.authorWu, T.C.en_US
dc.date2007zh_TW
dc.date.accessioned2014-06-06T08:14:13Z-
dc.date.available2014-06-06T08:14:13Z-
dc.identifier.issn0030-4018zh_TW
dc.identifier.urihttp://hdl.handle.net/11455/44983-
dc.description.abstractIn this paper, we present and analyse the optical characteristics, such as spectral shift, CIE coordinates, viewing angle dependence, luminous current efficiency and luminous power efficiency, of an organic light-emitting device (OLED) with a commercial diffuser film or a brightness-enhancement film (BEF) attached. Compared to a planar green OLED, the luminous current efficiencies of the OLED with an attached diffuser film or BEF increase by 29% and 23%, respectively. The overall luminous power efficiencies are enhanced by 28% and 7%. Compared to the planar green device, we observe blue shifts at different viewing angles when microstructured films are attached, which is the evidence that the waveguiding modes are being extracted. In our planar OLED, the peak wavelength blue shifts and the full width at the half maximum (FWHM) decrease with increasing viewing angles due to the microcavity effect. When the diffuser is attached, the spectral peak has a constant blue shift (6 nm) compared to that of the planar OLED. On the other hand, in the BEF case, the spectral shift depends on the viewing angle (2-12 nm blue shifts from 0 to 80 degrees). This is due to the different operating principles (scattering and redirected light) of the diffuser and BEF. Since the transmittance spectra of both the diffuser film and the BEF are flat over the visible range, it is suitable for lighting applications by using white OLED. When attaching the films on a commercial white OILED, the luminous current efficiencies of the OLED with an attached diffuser film or BEF increase by 34% and 31%, respectively. The overall luminous power efficiencies are enhanced by 42% and 8%. (c) 2007 Elsevier B.V. All rights reserved.en_US
dc.language.isoen_USzh_TW
dc.relationOptics Communicationsen_US
dc.relation.ispartofseriesOptics Communications, Volume 275, Issue 2, Page(s) 464-469.en_US
dc.relation.urihttp://dx.doi.org/10.1016/j.optcom.2007.03.028en_US
dc.subjectluminous current efficiencyen_US
dc.subjectluminous power efficiencyen_US
dc.subjectorganicen_US
dc.subjectlight-emitting deviceen_US
dc.subjectdiffuser filmen_US
dc.subjectbrightness-enhancement filmen_US
dc.subjectelectroluminescent diodesen_US
dc.subjectmicrolens arrayen_US
dc.subjectemissionen_US
dc.subjectenhancementen_US
dc.subjectscatteringen_US
dc.titleImprovement of the outcoupling efficiency of an organic light-emitting device by attaching microstructured filmsen_US
dc.typeJournal Articlezh_TW
dc.identifier.doi10.1016/j.optcom.2007.03.028zh_TW
item.grantfulltextnone-
item.openairetypeJournal Article-
item.languageiso639-1en_US-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
item.cerifentitytypePublications-
item.fulltextno fulltext-
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