White Organic Light-Emitting Diodes Using Two Phosphorescence Materials in a Starburst Hole-Transporting Layer
We fabricated two kinds of white organic light-emitting diodes (WOLEDs); one consisted of two emissive materials of red and blue, and the other of three emissive materials of red, green, and blue. The red and blue emissive materials were phosphorescent. We evaluated the thickness dependence of the C...
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| Format: | Article |
| Language: | English |
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Wiley
2012-01-01
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| Series: | International Journal of Photoenergy |
| Online Access: | http://dx.doi.org/10.1155/2012/703496 |
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| author | Tomoya Inden Tomoya Hishida Masayuki Takahashi Masato Ohsumi Naoki Ohtani |
| author_facet | Tomoya Inden Tomoya Hishida Masayuki Takahashi Masato Ohsumi Naoki Ohtani |
| author_sort | Tomoya Inden |
| collection | DOAJ |
| description | We fabricated two kinds of white organic light-emitting diodes (WOLEDs); one consisted of two emissive materials of red and blue, and the other of three emissive materials of red, green, and blue. The red and blue emissive materials were phosphorescent. We evaluated the thickness dependence of the CIE coordinate, the external quantum efficiency (EQE), and the luminance by changing the thicknesses of the Ir(btp)2acac and FIrpic layers. Samples consisting of three emissive materials revealed the best CIE coordinate and the best EQE in the same sample structure. On the other hand, the samples consisting of two emissive materials revealed the best CIE coordinate and the best EQE in different structures. The best CIE coordinate of (0.33, 0.36) was observed by changing the thicknesses of the stacked active layers. The best EQE was 9.73%, which was observed in the sample consisting of different thickness of stacked active layers. |
| format | Article |
| id | doaj-art-18b3e59e4de542b5809ab25335873a02 |
| institution | Kabale University |
| issn | 1110-662X 1687-529X |
| language | English |
| publishDate | 2012-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | International Journal of Photoenergy |
| spelling | doaj-art-18b3e59e4de542b5809ab25335873a022025-02-03T07:26:13ZengWileyInternational Journal of Photoenergy1110-662X1687-529X2012-01-01201210.1155/2012/703496703496White Organic Light-Emitting Diodes Using Two Phosphorescence Materials in a Starburst Hole-Transporting LayerTomoya Inden0Tomoya Hishida1Masayuki Takahashi2Masato Ohsumi3Naoki Ohtani4Graduate School of Engineering, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8603, JapanDepartment of Electronics, Doshisha University, 1-3 Tatara-Miyakodani, Kyotanabe, Kyoto 610-0321, JapanDepartment of Electronics, Doshisha University, 1-3 Tatara-Miyakodani, Kyotanabe, Kyoto 610-0321, JapanDepartment of Electronics, Doshisha University, 1-3 Tatara-Miyakodani, Kyotanabe, Kyoto 610-0321, JapanDepartment of Electronics, Doshisha University, 1-3 Tatara-Miyakodani, Kyotanabe, Kyoto 610-0321, JapanWe fabricated two kinds of white organic light-emitting diodes (WOLEDs); one consisted of two emissive materials of red and blue, and the other of three emissive materials of red, green, and blue. The red and blue emissive materials were phosphorescent. We evaluated the thickness dependence of the CIE coordinate, the external quantum efficiency (EQE), and the luminance by changing the thicknesses of the Ir(btp)2acac and FIrpic layers. Samples consisting of three emissive materials revealed the best CIE coordinate and the best EQE in the same sample structure. On the other hand, the samples consisting of two emissive materials revealed the best CIE coordinate and the best EQE in different structures. The best CIE coordinate of (0.33, 0.36) was observed by changing the thicknesses of the stacked active layers. The best EQE was 9.73%, which was observed in the sample consisting of different thickness of stacked active layers.http://dx.doi.org/10.1155/2012/703496 |
| spellingShingle | Tomoya Inden Tomoya Hishida Masayuki Takahashi Masato Ohsumi Naoki Ohtani White Organic Light-Emitting Diodes Using Two Phosphorescence Materials in a Starburst Hole-Transporting Layer International Journal of Photoenergy |
| title | White Organic Light-Emitting Diodes Using Two Phosphorescence Materials in a Starburst Hole-Transporting Layer |
| title_full | White Organic Light-Emitting Diodes Using Two Phosphorescence Materials in a Starburst Hole-Transporting Layer |
| title_fullStr | White Organic Light-Emitting Diodes Using Two Phosphorescence Materials in a Starburst Hole-Transporting Layer |
| title_full_unstemmed | White Organic Light-Emitting Diodes Using Two Phosphorescence Materials in a Starburst Hole-Transporting Layer |
| title_short | White Organic Light-Emitting Diodes Using Two Phosphorescence Materials in a Starburst Hole-Transporting Layer |
| title_sort | white organic light emitting diodes using two phosphorescence materials in a starburst hole transporting layer |
| url | http://dx.doi.org/10.1155/2012/703496 |
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