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Proceedings Paper

High open-circuit-voltage organic solar cell based on two solution-processible triphenylamine-containing compounds
Author(s): Chang He; Qingguo He; Guanglong Wu; Fenglian Bai; Yongfang Li
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Paper Abstract

Two solution-processible linear organic conjugated molecules with an electron-deficient core and triphenylamine (TPA) end groups, TPA-DCM-TPA and TPA-th-TPA, were used as donor and acceptor materials respectively in fabricating all organic solar cells (OSCs) by spin-coating method. Both the LUMO and HOMO energy levels of TPA-th-TPA are lower than those of TPA-DCM-TPA, which makes TPA-th-TPA a suitable acceptor for the OSCs with TPA-DCM-TPA as donor. The all OSC based on the blend of TPA-DCM-TPA and TPA-th-TPA (1:1, w/w) with LiF/Al as cathode, showed the photo-sensitivity in a broad wavelength range from 380 nm to 700 nm, high open-circuit-voltage (Voc) of 1.21 V, and a power conversion efficiency of 0.21% under the illumination of AM 1.5, 100 mW/cm2. The high Voc of the device is benefited from the higher LUMO energy level of the TPA-th-TPA acceptor in comparison with that of the traditional acceptor PCBM.

Paper Details

Date Published: 13 November 2007
PDF: 8 pages
Proc. SPIE 6656, Organic Photovoltaics VIII, 66560Z (13 November 2007); doi: 10.1117/12.732802
Show Author Affiliations
Chang He, Institute of Chemistry (China)
Qingguo He, Institute of Chemistry (China)
Guanglong Wu, Institute of Chemistry (China)
Fenglian Bai, Institute of Chemistry (China)
Yongfang Li, Institute of Chemistry (China)

Published in SPIE Proceedings Vol. 6656:
Organic Photovoltaics VIII
Paul A. Lane, Editor(s)

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