We have previously developed a solar cell using the photochemistry of Photosystem I particles and flavin mononucleotide (Gross et al, 1978). We have now shown that phenosafranine (3,7‐diamine‐5 phenyl phenazine) is an acceptor of Photosystem I. We have used this compound to generate a photovoltage. The total power obtained was the sum of two photoreactions: the Photosystem I mediated photoreduction of phenosafranine and the direct photochemical reduction of phenosafranine by reducing agents such as EDTA or Tricine. An open circuit potential of 670 mV and a short circuit current of 1.6 mA (current density = 20 μA/cm2) were obtained. The front face power conversion efficiency of the cell was about 0.2% at 110 Wm−2 light intensity.
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Bhardwaj et al. (1981) studied this question.
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