A hetero-junction organic solar cell coupled with electrochemically deposited CdS and 2,9-dimethyl quinacridone pigment was fabricated. Open-circuit voltage of 0.61 V and short-circuit photocurrent of 127 μA/cm2 with large fill-factor of 0.32 were obtained under 71 mW/cm2 white light, giving conversion efficiency of 0.04%. No fatigue was observed over a month continuous irradiation of 15 mW/cm2.
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Manabe et al. (1987) studied this question.