| Original Articles |
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Novel Alternating Current Electroluminescent Devices with an
Asymmetric Structure Based on a Polymer Heterojunction |
| TAN Hai-Shu1,2;YAO Jian-Quan2;WANG Xin1;WANG Peng2;XIE Hong-Quan3 |
| 1Department of Electronics, Foshan University, Foshan
528000
2College of Precision Instrument and Opto-electronics Engineering, Tianjin University, Tianjin 300072
3Department of Chemistry, Huangzhong University of Science and Technology, Wuhan 430074 |
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| Cite this article: |
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TAN Hai-Shu, YAO Jian-Quan, WANG Xin et al 2002 Chin. Phys. Lett. 19 1359-1361 |
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Abstract Novel alternating current electroluminescent devices with an
asymmetric structure are successfully fabricated by using a hole-type polymer, poly (2,5-bis (dodecyloxy)-phenylenevinylene) (PDDOPV) and an electron-type polymer, poly (phenyl quinoxaline) (PPQ). The performance of the polymer devices with heterojunction under ac operation is insensitive to thickness of the two polymer layers, compared to that under dc operation. This new advantage means an easy and cheap production facility on a large scale in the near future. Different emission spectra are obtained when our ac devices are operated in an ac mode, forward, or reverse bias. The emission spectrum at reverse bias includes two parts. One from PDDOPV and the other is from PPQ.
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| Keywords:
78.60.Fi
78.20.-e
78.55.Et
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Published: 01 September 2002
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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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