Effect of Leaves and Acids types on The Electrical Absorbance of DSSC using Nanostructured Zinc Oxide

Abstract

Solar energy is the most promising sources of energy in KSA due to the constant high solar radiation throughout the year. This not used effectively due to the solar cells rising costs. Nano solar cells are the promising alternative in comparison to silicon solar cells due to its lower cost. leaves of green cabbage and orange plant used as sensitizers. The effect of extracted temperatures, and immersed periods on the energy conversion efficiency is obtained. Among the previous dyes, orange showed the best efficiency. The Nano dye sensitized solar cells (NDSSC’s) performance improved through controlling the extraction solution temperature and both the pre-treatments of the Nano zinc oxide glass substrate and its post-treatments films using hydrochloric, phosphoric, and nitric acids. The max. conversion efficiency is 0.141 at 60OC and 0.11 at 45OC for both orange and green cabbage respectively. The pre-treatment of the FTO with HCL, HNO3 and H3PO4 showed an efficiency improvement of 214%, 180% and 140% at 8 hrs using orange leaves dye, and 207%, 184% and 152% respectively at 6 hrs using green cabbage .