Synthesis and characterization of natural sensitizers for dye sensitized solar cells

Kimpa, Mohammed Isah and Uthman Isah, Kasim and Yabagi, Jibrin Alhaji and Taufiq, Sulaiman and Agam, Mohd Arif (2017) Synthesis and characterization of natural sensitizers for dye sensitized solar cells. Traektoriâ nauki, 3 (10). pp. 2001-2006. ISSN 2413-9009

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Natural dyes of anthocyanin extract from flame tree flower (Delonix regia) and chlorophyll extract from pawpaw leaf (Carica papaya) were used as sensitizer to fabricate dye sensitized solar cell (DSSC). The photoelectrode were subjected to UV/Vis spectrophotometer to view their absorbability. The photo electrochemical performances of DSSCs obtained from I.V characteristics showed conversion efficiency, (ɳ) of 0.80 % for the dye extracts from flame tree flower (anthocyanine), with open-circuit voltage (VOC) of 0.5249 mV, short-circuit current density (Isc) of 44.6191 mA/m2 and Fill factor (FF) of 0.5837. Chlorophyll dyes extract from pawpaw leaf has VOC, Isc, FF and conversion efficiency, (ɳ) of 0.5249 mV, 16.5283 mA/m2, 0.5585 and 0.27 % respectively. The conversion efficiency for the mixed dyes (anthocyanin and chlorophyll) at ratio 1:2 is 0.23 % with VOC, Isc and FF of 0.5500 mV, 14.2750 mA/m2 and 0.5451 respectively, while the dye mixture at ratio 1:4 achieved VOC of 0.5249 mV, Isc of 18.4941 mA/m2, FF of 0.5206 and conversion efficiency (ɳ) of 0.26 %. Anthocyanine from flame tree flower dye extract had the higher conversion efficiency of 0.8 % which could be better in term of application in dye solar cell.

Item Type: Article
Uncontrolled Keywords: Flame tree flower; Pawpaw leaf; Solar cell; Absorbance; Chlorophyll; Anthocyanin
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK2896-2985 Production of electricity by direct energy conversion
Divisions: Faculty of Applied Science and Technology > Department of Physics and Chemistry
Depositing User: Miss Nur Rasyidah Rosli
Date Deposited: 21 Nov 2021 07:36
Last Modified: 21 Nov 2021 07:36

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