The design,fabrication method,application and experimental results of a photoelectric effect experimental device were introduced.The device used a multi-range micro-current sensor,which could accurately measure the photocurrent for different luminance light sources and different photocells.The model of photocell and filter were studied,and the three main experimental perform-ances of the photoelectric effect,i.e.cutoff frequency,saturation current and suppression voltage,were demonstrated effectively.The design of the experimental instrument was reasonable,the opera-tion was simple,the phenomenon was obvious,which was obviously suitable for classroom demon-stration.
photoelectric effectcut-off frequencysaturation currentsuppression voltage
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