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Proceedings Paper

N-type doping of organic electron transport materials for solar cells
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Paper Abstract

To realize organic solar cells with high performance, we developed a novel way of stable n-doping using cationic dyes in electron transport materials. In our approach, the volatile donors are created in-situ from stable precursor compounds. Using the cationic dye pyronin B (PyB) as a model precursor, we carried out conductivity and field effect measurements to characterize the properties of doped naphtalene tetracarboxylic dianhydride (NTCDA) thin film. The results show a strong increase in n-type conductivity. Combined FTIR, UV/VIS/NIR and mass spectroscopic measurements suggest the formation of leuco pyronin B during sublimation of pyronin B chloride, and a subsequent charge transfer between dopant and matrix providing free electrons, which increase the n-type conductivity.

Paper Details

Date Published: 8 September 2004
PDF: 8 pages
Proc. SPIE 5464, Organic Optoelectronics and Photonics, (8 September 2004); doi: 10.1117/12.546727
Show Author Affiliations
Fenghong Li, Technische Univ. Dresden (Germany)
Ansgar G. Werner, Technische Univ. Dresden (Germany)
Kentaro Harada, Technische Univ. Dresden (Germany)
Bert Maennig, Technische Univ. Dresden (Germany)
Jens Drechsel, Technische Univ. Dresden (Germany)
Karl Leo, Technische Univ. Dresden (Germany)
Martin Pfeiffer, Technische Univ. Dresden (Germany)

Published in SPIE Proceedings Vol. 5464:
Organic Optoelectronics and Photonics
Paul L. Heremans; Michele Muccini; Hans Hofstraat, Editor(s)

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