Photogalvanic effect : Comparative studies in three dyes Rhodamine B, Methylene blue and Safranine
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Description
Department of Chemistry. Jai Narain Vyas University. Jodhpur-342 001. Rajasthan. India
E-mail : krg2004@rediffmail.com
Manuscript received 23 March 2005, revised 20 October 2005, accepted 26 October 2005
The photogalvanic effect was studied in photogalvanic cell containing ascorbic acid as a reductant, Methylene blue, Safranine and Rhodamine B as photosensitizers for solar energy conversion and storage point of view. The conversion efficiency for Methylene blue, Safranine and Rhodamine B were 0.83, 0.65 and 0.51% and storage capacity 165.0, 115.0, 45.0 min respectively. The effect of variations of various parameters on electrical output and i-V characteristics of the cell were observed and a mechanism for generation of photocurrcnt has also been proposed.
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