Basic Photoelectrochemical Test Setup

The three- or two-port photoelectrochemical ceUs (e.g.. Fig. 3.7b) should be made of material that is transparent to the illumination spectrum of interest. If UV irradiation is required, quartz windows must be used in the cell, as opposed to borosilicate glass which generaUy absorbs wavelengths below 360 nm. The distances between all electrodes should be minimized to limit the effect of electrolyte resistance on the electrochemical test. For electrical measurements, a low impedance ammeter can be used to measure the short-circuit current density. 

However, more sophisticated measurement tools such as potentiostats or source meters are required to measure the photocurrent density as a function of applied potential (particularly in measurements referenced to the RE). 

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