TITLE

Pyronin B as a donor for n-type doping of organic thin films

AUTHOR(S)
Werner, A. G.; Li, F.; Harada, K.; Pfeiffer, M.; Fritz, T.; Leo, K.
PUB. DATE
June 2003
SOURCE
Applied Physics Letters;6/23/2003, Vol. 82 Issue 25, p4495
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present an approach to stable n-type doping of organic matrices using organic dopands. To circumvent stability limitations inherent in strong organic donors, we produce the donor from a stable precursor compound in situ. As an example, pyronin B chloride is studied as a dopant in a 1,4,5,8-naphthalene tetracarboxylic dianhydride matrix. Conductivities up to 2 × 10[SUP-4]S/cm are obtained, which is two orders of magnitude higher than obtained previously using bis(ethylenedithio)-tetrathiafulvalene as a dopant [A. Nollau, M. Pfeiffer, T. Fritz, and K. Leo, J. Appl. Phys. 87, 4340 (2000)]. Field-effect measurements are used to prove n-type conduction. Other matrices which can be doped are N, N'-dimethyl-perylene-3,4,9,10-tetracarboxylic diimide and fullerene C[SUB60], frequently used in organic solar cells. Visible light and Fourier-transform infrared spectroscopy confirm the donor properties of pyronin B.
ACCESSION #
10024429

 

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