The Prospect of Micro-Energy Generation from Almond (Prunus Dulcis) Dye-Sensitized Solar Cells

T. J. Abodunrin, A. O. Boyo, M. R. Usikalu, L. Obafemi, F. Oladapo


The generation of environmentally and sustainable energy is a basic need towards proffering a solution to the climatic and scientific challenges confronting twenty-first century human race. This quest has led to the discovery of diverse unconventional energy resources existing presently. Amongst all these viable options, solar energy is considered to have the best prospect in view of its all-year availability, no geographical restriction and the \(3.8 \times 10^{26}\) Joule of energy it gives off per second. This energy can be tapped either using direct or indirect means; the use of natural dyes to mimic photosynthesis in dye-sensitized solar cell (DSC) device is a response to provide an economical and technical substitute to  traditional \(p\)-\(n\) junction photovoltaic devices. DSC is a systematic device that uses disorderly technology to produce electricity in diverse light conditions such as outdoors, in poor lightning conditions. The devices are also able to convert both natural and man-made light into energy to power technology through a broad range of electronic devices. In this paper, we present almond dye-sensitized cells spectral responses with four different electrolyte sensitizers. The result is DSCs with a comparative output efficiency of 3.24%, Voc of 306 mV with KBr; the least efficient DSC was HgCl\(_2\) electrolyte sensitized with an output efficiency of 0.09% under same standard atmospheric conditions of 1.5 A.M and temperature of 27.1 \(^\circ\)C and pH of 5.49.


Micro-energy generation; Dye-sensitized solar cell; Spectral responses; Almond; Sustainable energy

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S.A.M. Al-Bathi, I. Alaei and I. Sopyan, Natural photosensitizers for dye sensitized solar cells, International Journal of Renewable Energy Research 3 (1) (2013), 138–143.

G. Boschloo and A. Hagfeldt, Characteristics of the iodide/triiodide redox mediator in dye-sensitized solar cells, Accounts of Chemical Research 42 (11) (2009), 1819–1826.

M. Grätzel, Recent advances in sensitized mesoscopic solar cells, Accounts of Chemical Research 42 (11) (2009), 1788–1798.

S. Hwang, J.H. Lee, C. Park, H. Lee, C. Kim, C. Park, M.H. Lee, W. Lee, J. Park, K. Kim, N.G. Park and C. Kim, A highly efficient organic sensitizer for dye-sensitized solar cells, Chemical Communications 46 (2007), 4887–4889.

N.C. Jeong et al., Effective panchromatic sensitization of electrochemical solar cells: strategy and organizational rules for spatial separation of complementary light harvesters on high-area photo electrodes, J. Am. Chem. Soc. 134 (2012), 19820–19827.

D. Kuang et al., Co-sensitization of organic dyes for efficient ionic liquid electrolyte-based dyesensitized solar cells, Langmuir 23 (2007), 10906–10909.

S.M. Milenkovic, J.B. Zvezdanovic, T.D. Andjelkovic and D.Z. Markovic, The identification of chlorophyll and its derivatives in the pigment mixtures: HPLC-chromatography, visible and mass spectroscopy studies, Adv. Tech. 1 (1) (2012), 16–24.

M.K. Nazeeruddin, A. Kay, I. Rodicio, R. Humpbry-Baker, E. Miiller, P. Liska, N. Vlachopoulos and M. Grätzel, Conversion of light to electricity by cis-X2bis(2,2’-bipyridyl-4,4’-dicarboxylate) ruthenium(II) charge-transfer sensitizers (X = Cl=, Br-, I=, CN=, and SCN=) on nanocrystalline titanium dioxide electrodes, J. Am. Chem. Soc. 115 (1993), 6382–6390.

M.K. Nazeeruddin, P. Péchy, T. Renouard, S.M. Zakeeruddin, R. Humphry-Baker, P. Comte, P. Liska, L. Cevey, E. Costa, V. Shklover, L. Spiccia, G.B. Deacon, C.A. Bignozzi and M. Grätzel, Engineering of efficient panchromatic sensitizers for nanocrystalline TiO2-based solar cells, Journal of the American Chemical Society 123 (8) (2001), 1613–1624.

B.C. O’Regan and F. Lenzmann, Charge transport and recombination in a nanoscale interpenetrating network of n-type semiconductors: transient photocurrent and photovoltage studies of TiO2/dye/CuSCN photovoltaic cells, J. Phys. Chem. B 108 (2004), 4342–4350.

S. Sharma, S. Bulkesh, S.K. Ghoshal and D. Mohan, Dye sensitized solar cells: From genesis to recent drifts, Renewable and Sustainable Energy Reviews 70 (2017), 529–537.

S. Tontapha, W. Sangaroon, S. Kanokmedhakul, T. Promgool and V. Amornkitbamrung, Effects of dye-adsorption solvents, acidification and dye combination on efficiency of DSSCs sensitized by (alpha)-mangostin and anthocyanin from mangosteen pericarp, J. Mater. Sci.: Mater Electron (2017).

V. Varadharajan, U.K. Janarthanan and V. Krishnamurthy, Physicochemical, phytochemical screening and Profiling of secondary metabolites of Annona Squamosa leaf extract, J. Pharmacogn and Phytochem. 5 (2) (2016), 200–203.

J.H. Yum, E. Baranoff, S. Wenger, M.K. Nazeeruddin and M. Gratzel, Panchromatic engineering for dye-sensitized solar cells, Energy Environ. Sci. 4 (2011), 842–857.

Q. Zhang and G. Cao, Nanostructured photoelectrodes for dye-sensitized solar cells, Nano Today 6 (1) (2011), 91–109.


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