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A virtual bipolar photogalvanic cell was developed using Visual Basic. On the basis of the simulation, it is indicated that the charge separation (k d ) and the charge recombination (k r ) rate constants can be estimated using the photocurrent response. The thickness of the charge separation region can be anticipated by photocurrent response at various layer thicknesses. The increase in diffusion coefficients raises the short-circuit photocurrent to enhance the performance of the photogalvanic cell. An actual device was fabricated using tris(bipyridine)ruthenium ( 2+* ] to Prussian Blue. The charge separation and the recombination rate constants were estimated, using the virtual device, to be 5 10 2 mol -1 cm 3 s -1 and 6 10 9 mol -1 cm 3 s -1 , respectively.

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A solid film device capable of visualizing ultraviolet ray irradiation was created using a nanohetero-structured polysaccharide solid containing acid generator, dye and 2-propanol medium.

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