Photoinduced long-term memory effects in n-type organic perylene transistors.
BLOISI, FRANCESCO and CASSINESE, ANTONIO and VICARI, LUCIANO ROSARIO MARIA (2009) Photoinduced long-term memory effects in n-type organic perylene transistors. [Pubblicazione su rivista scientifica]
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In this paper, the photoexcitation response of high mobility n-type organic field-effect transistors is analyzed. White light exposure of N,N_-dioctyl-3,4,9,10-perylene tetracarboxylic diimide _PTCDI-C8H_ transistors is demonstrated to promote the occurrence of metastable conductance states with very long retention times, similar to what has been previously reported for p-type compounds. Even in the absence of a gate-source voltage VGS, the complete recovery of the initial electrical condition can take up to 20 days. However, the initial state restoring is electrically controllable by the application of a positive VGS. These effects suggest that PTCDI-C8H is an interesting n-type material for the development of light-sensitive organic circuitry.
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