Natural dye extraction from Syzygium Cumini and its potential photovoltaic application as economical sensitizer
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ORIGINAL ARTICLE
Natural dye extraction from Syzygium Cumini and its potential photovoltaic application as economical sensitizer Karan Surana1 · Miftahu Gambo Idris1,2 · Bhaskar Bhattacharya1,3 Received: 30 April 2020 / Accepted: 14 May 2020 © King Abdulaziz City for Science and Technology 2020
Abstract Solar energy being a vital source of energy for the future generations, it is necessary to make solar cells cost effective. The quest for cost effective and environmental friendly energy source has led to the development of dye sensitized solar cell (DSSC). In the present work we have explored the extraction and optical and electrochemical properties of Syzygium Cumini or commonly known as Jamun. The dye has been successfully used over mesoporous titania (TiO2) as sensitizer in DSSC with polymer electrolyte. The efficiency improved when an additional layer of reduced graphene oxide was embedded prior to TiO2. Overall the photovoltaic parameters suggest that the dye characteristics could be improved to give better efficiency. Furthermore, compared to the cost of the standard Ruthenium N719 dye, the cost of Jamun dye is inexpensive making it a highly economical dye for DSSC. Keywords Syzygium Cumini · Natural dye · DSSC · Sensitizer · Cyclic voltammetry
Introduction Supplementing the growing demand of energy supply due to ever increasing world population has been a major challenge in front of scientists and technologists since the last 2 decades. Additional sources of energy apart from the existing ones are needed to meet the high demands. The quest for environmentally friendly and clean energy source has led to extensive research on alternative energy sources (Singh et al. 2011). Solar energy as a renewable energy source is considered to be a promising candidate in replacing fossil fuels in the near future due to its massive potential and long term advantages (Giribabu et al. 2012; Kåberger 2018). The energy can be harvested directly from sunlight using photovoltaic energy conversion method and also has the potential to supplement the next generation’s green energy demand * Bhaskar Bhattacharya [email protected] 1
Material Research Laboratory, School of Basic Sciences and Research, Sharda University, Greater Noida, UP 201310, India
2
Department of Physics, Yobe State University, Damaturu 630101, Yobe, Nigeria
3
Department of Physics, MMV, Banaras Hindu University, Varanasi, UP 221005, India
(Surana and Mehra 2018). Furthermore, the direct utilization of photons to produce electricity is pretty close to an ideal way for utilizing nature’s renewable energy flow. Dye sensitized solar cell (DSSC) also called as ‘Gratzel cell’ has gained a lot of interest in the past couple of years because of its low cost, ease of fabrication, good efficiency, and its commercialization potential (O’regan and Grätzel 1991; Singh et al. 2014a, b, c). A typical DSSC device consists of a thin layer of wide bandgap semiconductor (ZnO, TiO2, SnO2 etc.) on a fluorine doped tin oxide (FTO) coated glass as photo-anod
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