Louisa M. Smieska, Vladimir A. Pozdin, Justin L. Luria, Richard G. Hennig, Melissa A. Hines, Chad A. Lewis and John A. Marohn Following Chemical Charge Trapping in Pentacene Thin Films by Selective Impurity Doping and Wavelength-Resolved Electric Force Microscopy Advanced Functional Materials 22
Thin pentacene films are layered with putative pentacene trap-precursors and the resulting spatial distribution of charge traps and spectroscopic trap-clearing rates under illumination are measured with time- and wavelength-resolved electric force microscopy. Pentacen-6(13H)-one efficiently generates charged traps with trap-clearing spectra resembling those of aged pentacene, while 6,13-dihydropentacene does not. It is concluded that PHO+ is the charged trap species.
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