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Light responsive organic field-effect transistors based on spiro-linked compound 2,7-bis-(N,N′-diphenylamino)-2′,7′-bis(spirobifluorene-2-yl)-9,9′-spirobifluorene is reported. The mechanism of light responsive transistor operation is based on intramolecular charge transfer between two molecular halves, which leads to an increase in charge carrier density upon illumination with ultraviolet light, thus...
We report on the fabrication and characterization of ambipolar organic phototransistors based on amorphous thin films of donor/acceptor dyad N-[7-(N,N-diphenylamino)-9,9′-spirobifluoren-2-yl]-N′-(2,5-di-tert-butylphenyl)-3,4:9,10-perylenetetracarboxylicdiimide. The mechanism of light enhanced photocurrent is based on photoinduced charge transfer between the donor and the acceptor unit. The photoresponsivity...
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