Abstract

Photocurrent multiplication reaching 3000-fold was newly observed at an organic/organic heterojunction between p-type phthalocyanine and n-type perylene pigment layers. Multiplied photocurrent caused upon the irradiation of red light exciting CuPc was effectively suppressed by irradiating blue light exciting Me-PTC simultaneously. A rudimentary optical computing device was successfully demonstrated combining organic electroluminescence with this organic heterojunction device.

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