Photogalvanic cells: only solar cells having dual role of solar power generation and storage

摘要

Solar cell converts solar energy into electricity directly. Among such solar cells,rnthe photogalvanic cells are unique as these are only solar cells that are capablernof doing solar power generation and storage simultaneously. Therefore, such anrninherent solar power storage capacity that too with good efficiency of these cellsrnneeds to be exploited for making solar cell technology a reliable source of powerrnin the future. The fabrication and experimentation of photogalvanic cells is veryrnsimple to demonstrate its unique property. The power, short-circuit current,rnopen-circuit potential, conversion efficiency, and power storage (in terms of halfrnchange time) for photogalvanic cells are reported of the order of 1159 μW,rn4500 μA, 1.07 V, 14, and 260 min, respectively.rnHowever, to make photogalvanic cells realty in life for simultaneous solar powerrnand storage, some challenges have to be tackled. Some of the challenges arernphotodecay of dye, corrosion of platinum (Pt), evaporation of liquid, breakingrnvulnerability of SCE/combination electrode, further need to increase the powerrnand efficiency and storage, assembly operation of cells for augmentation ofrnpower, cell study in natural sunlight, and so on.