Effect of Blending Baobab and Neem Leaves Extract on Optical Band Gap Energy for Solar Cell Applications
DOI:
https://doi.org/10.14738/aivp.116.16021Keywords:
Chromophore, bandgap energy, optical absorbers, neem, baobab, dye sensitized solar cellAbstract
The effect of blending bio-dye extracts from neem and baobab tree leaves on the optical bandgap energy has been investigated. The change in Eg in response to blending at 33%, 50% and 67% by volume of baobab to neem extract has been determined and explored using UV-Vis spectroscopy and Tauc’s approximation method. The individual bandgap energies for pure baobab and pure neem extracts were identified as ca. 1.65 eV and ca. 1.76 eV, respectively. The bandgap energies for the blends obtained were 1.718 eV for 1:1, 1.778 eV for 1:2, and 1.693 eV for 2:1 blend. This observed shift in bandgap energy signifies an enhancement in the optical characteristics of the resultant dyes. Consequently, the blended extracts exhibit superior optical absorption properties compared to their parent dyes, positioning them as more effective sensitizers for dye-sensitized solar cells. The findings underscore the potential of these blended bio-dye extracts in advancing the efficiency of solar cell technologies.
References
T. L. Benanti and D. Venkataraman, “Organic Solar Cells: An Overview Focusing on Active Layer Morphology,” Photosynth. Res. 2006 871, vol. 87, no. 1, pp. 73–81, 2006, doi: 10.1007/S11120-005-6397-9.
L. E. Greene, M. Law, B. D. Yuhas, and P. Yang, “ZnO - TiO2 Core - Shell nanorod/P3HT solar cells,” J. Phys. Chem. C, vol. 111, no. 50, pp. 18451–18456, 2007, doi: 10.1021/jp077593l.
D. D. Luka, “Dye Sensitized Solar Cells Based on Highly Porous Tio2 Films,” 2017.
B. O’Regan and M. Gratzel, “A low-cost, high-efficiency solar cell based on dye-sensitive colloidal TiO2 films,” Nat., vol. 353, no. 6346, 1991.
F. Bella and R. Bongiovanni, “Photoinduced polymerization: An innovative, powerful and environmentally friendly technique for the preparation of polymer electrolytes for dye-sensitized solar cells,” J. Photochem. Photobiol. C Photochem. Rev., vol. 16, pp. 1–21, Sep. 2013, doi: 10.1016/j.jphotochemrev.2013.03.002.
L. Andrade, H. A. Ribeiro, and A. Mendes, “Dye-Sensitized Solar Cells: An Overview,” in Encyclopedia of Inorganic and Bioinorganic Chemistry, John Wiley & Sons, Ltd, 2011. doi: 10.1002/9781119951438.eibc0469.
A. Kunzmann et al., “Hybrid Dye-Titania Nanoparticles for Superior Low-Temperature Dye-Sensitized Solar Cells,” Adv. Energy Mater., vol. 8, no. 12, p. 1702583, 2018, doi: 10.1002/aenm.201702583.
M. Grätzel, “Dye-sensitized solar cells,” J. Photochem. Photobiol. C Photochem. Rev., vol. 4, no. 2, pp. 145–153, 2003, doi: 10.1016/S1389-5567(03)00026-1.
F. Arjmand, Z. Rashidi Ranjbar, and H. Fatemi E. G, “Effect of dye complex structure on performance in DSSCs; An experimental and theoretical study,” Heliyon, vol. 8, no. 11, p. e11692, Nov. 2022, doi: 10.1016/J.HELIYON.2022.E11692.
S. Sahare, N. Veldurthi, R. Singh, A. K. Swarnkar, M. Salunkhe, and T. Bhave, “Enhancing the efficiency of flexible dye-sensitized solar cells utilizing natural dye extracted from Azadirachta indica,” Mater. Res. Express, vol. 2, no. 10, p. 105903, 2015, doi: 10.1088/2053-1591/2/10/105903.
A. K. K. Swarnkar, S. Sahare, N. Chander, R. K. Gangwar, S. V. V. Bhoraskar, and T. M. Bhave, “Nanocrystalline titanium dioxide sensitised with natural dyes for eco-friendly solar cell application,” vol. 10, no. 13, pp. 1001–1011, 2015, doi: 10.1080/17458080.2014.951410.
D. D. Pratiwi, F. Nurosyid, Kusumandari, A. Supriyanto, and R. Suryana, “Performance improvement of dye-sensitized solar cells (DSSC) by using dyes mixture from chlorophyll and anthocyanin,” J. Phys. Conf. Ser., vol. 909, no. 1, p. 012025, 2017, doi: 10.1088/1742-6596/909/1/012025.
F. Kabir et al., “Improvement of efficiency of Dye Sensitized Solar Cells by optimizing the combination ratio of Natural Red and Yellow dyes,” Optik (Stuttg)., vol. 179, pp. 252–258, 2019, doi: 10.1016/J.IJLEO.2018.10.150.
M. R. Karim, M. A. Shar, and S. Abdullah, “Mixed Dyes for Dye-sensitized Solar Cells Applications,” Curr. Nanosci., vol. >15, no. 5, pp. 501–505, 2019, doi: 10.2174/1573413715666190325165613.
N. Sangiorgi, L. Aversa, R. Tatti, R. Verucchi, and A. Sanson, “Spectrophotometric method for optical band gap and electronic transitions determination of semiconductor materials,” Opt. Mater. (Amst)., vol. 64, pp. 18–25, 2017, doi: 10.1016/J.OPTMAT.2016.11.014.
U. I. Ndeze, J. Aidan, S. C. Ezike, and J. F. Wansah, “Comparative performances of nature-based dyes extracted from Baobab and Shea leaves photo-sensitizers for dye-sensitized solar cells (DSSCs),” Curr. Res. Green Sustain. Chem., vol. 4, p. 100105, 2021, doi: 10.1016/J.CRGSC.2021.100105.
IARC Monographs Working Group on the Evaluation of Carcinogenic Risks to Humans, “Some Aromatic Amines, Organic Dyes, and Related Exposures,” IARC Monogr. Eval. Carcinog. Risks Hum., vol. 99, pp. 1–658, 2010.
C. Weiss, “The Pi electron structure and absorption spectra of chlorophylls in solution,” J. Mol. Spectrosc.,
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