p-AgInSe~2 thin films on titantium substrate was obtained by electrodeposition method and some photoelectrochemical properties of thin films were studied. We discovered a periodically electrochemical oscillation phenomenna on AgInSe~2 electrode during H~2O~2 cathodic reduction and the frequency of the oscillation waves are effectively controlled by the frequency of chopped light, it may be developed into photoelectric senser.

Key words: HYDROGEN PEROXIDE, ELECTRO-DEPOSITION, PHOTOELECTRIC SENSORS, PHOTO-ELECTROCHEMISTRY, CATHODIC REDUCTION