Existence of persistent photoconductivity in C70

24 January 1994

journal article
research article
Published by AIP Publishing in Applied Physics Letters

Vol. 64 (4) , 526-528
https://doi.org/10.1063/1.111094

Abstract

We have observed a persistent photoconductivity effect (PPC) in C₇₀ films well above room temperature. The effect, which consists of a metastable increase in dark conductivity caused by brief exposure to light, exhibits characteristics very similar to the PPC previously observed in C₆₀ films. These characteristics include a magnitude of the effect independent of the light exposure temperature, the existence of a PPC even at 520 K, and the inability of subgap illumination to create or quench PPC. A common origin for the PPC in C₇₀ and C₆₀ seems plausible, and may be related to the distortions the fullerene molecules experience when charged.

Keywords

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