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Photovoltaic and Electroluminescence Bifunctional Devices with Starburst Amine and Rare-Earth-Complexes |
| WEN Fu-Shan1,2,3;LI Wen-Lian2;WEI Han-Zhi2;LIU Yun-Qi1,KIM Jin-Hyeok3 |
| 1College of Chemistry and Chemical Engineering, China University of Petroleum, Dongying, Shandong 2570612Key Laboratory of the Excited States Process, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 1300333Center for Photonic Materials and Devices, Department of Materials Science and Engineering, Chonnam National University, 300 Yongbongdong Pukgu Kwangju 500-757, South Korea |
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| Cite this article: |
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WEN Fu-Shan, LI Wen-Lian, WEI Han-Zhi et al 2007 Chin. Phys. Lett. 24 2060-2063 |
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Abstract We fabricate the organic photovoltaic (PV) devices, in which 4,4',4''-tris-(2-methylphenylphenylamino)triphenylamine (m-MTDATA) and rare earth (RE) (dibenzoylmethanato)3(bathohenanthroline) (RE(DBM)3bath) (RE = Nd or Pr) are used as electron donor and acceptor, and investigate their PV properties. The PV diode fabricated in the optimum processing conditions shows the open-circuit voltage of 1.91V, short-circuit current of 0.1mA/cm2, fill factor of
0.38, and the overall power conversion efficiency of 1.9% when it is irradiated under UV light (4mW/cm2). The photocurrent density exhibits an increase of 20% at least when a very thin LiF layer is inserted between the RE-complexes and the Al cathode. A strong electroluminescence from the interface is also observed and the maximum luminance of a yellow emission resulted from the exciplex is 580cd/m2 at 17V bias.
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| Keywords:
72.40.+w
78.60.Fi
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Received: 08 January 2007
Published: 25 June 2007
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| PACS: |
72.40.+w
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(Photoconduction and photovoltaic effects)
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78.60.Fi
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(Electroluminescence)
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