Unravelling the nature of unipolar resistance switching in organic devices by utilizing the photovoltaic effect.

Nau, Sebastian; Sax, Stefan; List-Kratochvil, Emil J W · Adv Mater · 2014

basic_science · Level V

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Abstract

The origin of resistive switching in organic devices is studied by photovoltaic methods and impedance spectroscopy. The results show that the most commonly proposed charging/discharging mechanisms can be excluded as working mechanism. There is solid evidence that resistive switching is due to the formation/rupture of filaments. Further, it is shown that this is a universal property of metal/organic/metal thin-film devices.