Poly(3-pentylmethoxythiophene)/Alq3 heterostructure light emitting diodes |
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| Affiliation: | 1. Istituto di Chimica delle Macromolecole, CNR, Via E. Bassini 15, 20133 Milan, Italy;2. Istituto di Fotochimica e Radiazioni d''Alta Energia, CNR, Via P. Gobetti 101, 40129 Bologna, Italy;1. Department of Electrical Engineering and Computer Science, The University of Michigan, Ann Arbor, MI 48109, USA;2. Department of Mechanical Engineering, The University of Michigan, Ann Arbor, MI 48109, USA;3. Ajou University, Suwon, South Korea;1. Department of Chemical Engineering, Soongsil University, Seoul 156-743, Republic of Korea;2. School of Chemical Engineering, Sungkyunkwan University, Suwon 440-746, Republic of Korea;3. SKKU Advanced Institute of Nanotechnology (SAINT), Sungkyunkwan University, Suwon 440-746, Republic of Korea;4. Center for Human Interface Nano Technology (HINT), Sungkyunkwan University, Suwon 440-746, Republic of Korea;1. Graduate Institute of Photonics and Optoelectronics, National Taiwan University, Taipei 106, Taiwan, ROC;2. Department of Electrophysics, National Chiao Tung University, Hsinchu 300, Taiwan, ROC;3. Department of Opto-Electronic Engineering, National Dong Hwa University, Hualien 974, Taiwan, ROC;1. Department of Energy Systems Engineering, Engineering Faculty, Güre Campus, 28200, Giresun, Turkey;2. Department of Physics, Faculty of Arts and Sciences, Giresun University, Gazipa?a Campus, 28100 Giresun, Turkey |
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| Abstract: | The electroluminescence efficiency of an organic light emitting diode (OLED) based on poly(3-pentylmethoxythiophene) (P5OMe) is improved by two orders of magnitude by employing the heterostructure architecture realized with a thin layer of tris(8-hydroxy)quinoline aluminium (Alq3), which acts as both electron transport and emitting layer. The emission can be tuned from the red to the green spectral region by varying the applied voltage. An additional emission observed both in photoluminescence and electroluminescence at the polymer/Alq3 interface is tentatively assigned to exciplex emission. |
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