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Abstract
A molecular photodiode with Metal/Insulator/Metal (MIM) structure was fabricated using the hetero-Langmuir-Blodgett (LB) films consisted of an electron acceptor (A) and a sensitizer (S). N-Docosylquinolium-TCNQ and 7,8-dimethyl-10-dodecyl isoalloxazine were used as A and S units, respectively. Due to excitation by irradiation with a 460 nm monochromatic light source, the photo induced unidirectional electron flow in the MIM device could be achieved and was detected as photocurrent. The photos witching function was achieved and the rectifying characteristics was observed in the proposed molecular device.