Energy conversion and storage potential of photogalvanic cell based on mixed dyes system: Ethylene diaminetetraacetic acid—Toluidine blue—Thionine

Abstract

The photogalvanic effect was studied in a photogalvanic cell containing ethylene diaminetetraacetic acid as reductant, toluidine blue, and thionine as photosensitizers. The photopotential and photocurrent generated were 695.0 mV and 105.0 lA, respectively. The observed conversion efficiency was 0.16%, and the maximum output (power) of the cell was 72.9lW. The photogalvanic cell can be used at this power level for 42.0 min in the dark due to the storage capacity of the cell. The effects of various parameters on electrical output of the cell were observed. The mechanism of the generation of the photocurrent in photogalvanic cells has also been proposed.

Study of KOH as alkali for enhancing performance of photo-galvanic cell in transparent cylindrical cell design

“…So far, a range of dye materials, such as Quinoline Yellow [ 20 ] , Tropaeline O [ 14 ] , Rhodamine B [ 21 ] , Brilliant Cresyl Blue [ 22 ] , Methylene Blue [ 23 ] , Toluidine Blue [ 24 ] , etc., have been exploited in photo-galvanic cells. The dye materials, so far exploited in the photogalvanics, have disadvantages like low water solubility and/or toxicity.…”