Light Responsive Copper Phthalocyanine (CuPc) Thin Film Transistor

RONGBIN YE, MAMORU BABA, YOSHIYUKI OHISHI and KUNIO MORI

We report on the effect of light on a CuPc thin film transistor and demonstrate the utility of light as an additional controlling parameter of the transistor state. The device exhibits excellent photoswitching characteristics although the photosensitivity is low. The time-resolved response can be described by a single response time constant. The photoswitching of the drain current is very fast and reversible with a relaxation time of less than 1 ms.