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Cubic spline interpolation gives a tool for obtaining good image of current-voltage characteristics for trap spectroscopy analysis without prior assumption about the trap distribution for 1-acenaphthenol and 9,10-dimethylanthracene.
The current-voltage (I-U) characteristics we have been measured for thin films of 1-acenaphthenol and 9,10-dimethylanthracene prepared from their commercially available materials as products with purity ≥ 10-3mass %. Using the method of differential processing of the characteristics, charge transport mechanism in these films was assessed.
Spectral grade materials obtained in zone-melting process from commercially available 1-acenaphthenol and 9,10-dimethyl-anthracene were characterized electrically. The layers vaporized in 10-5 Torr vacuum posses high resistivity of the order of 1011 - 1012 Ωm and the concentration of traps lower than 1015cm-3.
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