Highly efficient and wide-color-gamut organic light-emitting devices using external microcavity
An external microcavity structure was introduced to the stacked cathode in organic light-emitting devices (OLEDs), and its influence on the luminescent characteristics was investigated. From the detailed optical analysis that was conducted, it was found that the surface plasmon loss in a metal catho...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2019-07-01
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| Series: | Journal of Information Display |
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| Online Access: | http://dx.doi.org/10.1080/15980316.2019.1635048 |
| _version_ | 1818391333976408064 |
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| author | Akiyoshi Mikami |
| author_facet | Akiyoshi Mikami |
| author_sort | Akiyoshi Mikami |
| collection | DOAJ |
| description | An external microcavity structure was introduced to the stacked cathode in organic light-emitting devices (OLEDs), and its influence on the luminescent characteristics was investigated. From the detailed optical analysis that was conducted, it was found that the surface plasmon loss in a metal cathode can be reduced to about one-fifth by using a semi-transparent thin-film cathode, and can be extracted outside through the microcavity effect after being converted to the thin-film waveguide mode. No less than 50% of the optical power in dipole emission was successfully utilized as the external and substrate modes. The luminous efficiency increased about 1.4-fold, and the color purity of the luminance also improved. As a trial preparation of red, green, and blue OLEDs with the external microcavity structure, the color gamut improved greatly and approached the BT.2020 national standard. The effect of the external microcavity will be discussed from the viewpoint of multi-scale optical analysis. |
| first_indexed | 2024-12-14T05:11:52Z |
| format | Article |
| id | doaj.art-0b2f9c0e5c2741878345f192aa957c22 |
| institution | Directory Open Access Journal |
| issn | 1598-0316 2158-1606 |
| language | English |
| last_indexed | 2024-12-14T05:11:52Z |
| publishDate | 2019-07-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Journal of Information Display |
| spelling | doaj.art-0b2f9c0e5c2741878345f192aa957c222022-12-21T23:15:55ZengTaylor & Francis GroupJournal of Information Display1598-03162158-16062019-07-0120313514010.1080/15980316.2019.16350481635048Highly efficient and wide-color-gamut organic light-emitting devices using external microcavityAkiyoshi Mikami0Kanazawa Institute of TechnologyAn external microcavity structure was introduced to the stacked cathode in organic light-emitting devices (OLEDs), and its influence on the luminescent characteristics was investigated. From the detailed optical analysis that was conducted, it was found that the surface plasmon loss in a metal cathode can be reduced to about one-fifth by using a semi-transparent thin-film cathode, and can be extracted outside through the microcavity effect after being converted to the thin-film waveguide mode. No less than 50% of the optical power in dipole emission was successfully utilized as the external and substrate modes. The luminous efficiency increased about 1.4-fold, and the color purity of the luminance also improved. As a trial preparation of red, green, and blue OLEDs with the external microcavity structure, the color gamut improved greatly and approached the BT.2020 national standard. The effect of the external microcavity will be discussed from the viewpoint of multi-scale optical analysis.http://dx.doi.org/10.1080/15980316.2019.1635048Organic light-emitting devicelight extractionsurface plasmonmicrocavity |
| spellingShingle | Akiyoshi Mikami Highly efficient and wide-color-gamut organic light-emitting devices using external microcavity Journal of Information Display Organic light-emitting device light extraction surface plasmon microcavity |
| title | Highly efficient and wide-color-gamut organic light-emitting devices using external microcavity |
| title_full | Highly efficient and wide-color-gamut organic light-emitting devices using external microcavity |
| title_fullStr | Highly efficient and wide-color-gamut organic light-emitting devices using external microcavity |
| title_full_unstemmed | Highly efficient and wide-color-gamut organic light-emitting devices using external microcavity |
| title_short | Highly efficient and wide-color-gamut organic light-emitting devices using external microcavity |
| title_sort | highly efficient and wide color gamut organic light emitting devices using external microcavity |
| topic | Organic light-emitting device light extraction surface plasmon microcavity |
| url | http://dx.doi.org/10.1080/15980316.2019.1635048 |
| work_keys_str_mv | AT akiyoshimikami highlyefficientandwidecolorgamutorganiclightemittingdevicesusingexternalmicrocavity |