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Color Tunable Light-Emitting Diodes Based on Polymer/Inorganic Heterojunction |
| TAN Hai-shu1;CHEN Li-chun2,4;WANG Xiang-jun2;YAO Jian-quan1;JU Chuan-xi1;XIE Hong-quan3;GAO Guang-hua3 |
| 1College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072
2Institute of Material Physics, Tianjin Institute of Technology, Tianjin 300191
3Department of Chemistry, Huazhong University of Science and Technology, Wuhan 430074
4Laboratory of Physics Crystal, Institute of Material, 44322 Nantes, France
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| Cite this article: |
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TAN Hai-shu, CHEN Li-chun, WANG Xiang-jun et al 1998 Chin. Phys. Lett. 15 137-139 |
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Abstract By using p-type polymer poly(2,5-Didodecyloxy-1, 4-Phenylenylenevinylene) (PDDOPV) and n-type inorganic material ZnO:Zn, the electronluminescent (EL) emission from bilayer device based on polymer/inorganic hetero-junction was successfully demonstrated. In comparison with single layer polymer device, with dc voltage of 10V, the brightness and luminous efficiency of bilayer device were enhanced 14 and 26 times, respectively. The EL spectrum of bilayer device is not identical to the characteristic emission spectrum of either PDDOPV or ZnO:Zn, and shifts continuously towards to short wavelength direction as the applied voltage increases.
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| Keywords:
78.60.Fi
78.20.-e
78.55.Et
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Published: 01 February 1998
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| PACS: |
78.60.Fi
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(Electroluminescence)
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78.20.-e
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(Optical properties of bulk materials and thin films)
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78.55.Et
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(II-VI semiconductors)
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