Low cost and efficient counter electrode for solid-state natural dye-sensitized solar cells.

Autor: Chawla, Priyanka, Pandey, Anant Prakash, Pooja, Kumari, Tripathi, Mridula
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Zdroj: Journal of Applied Electrochemistry; Mar2023, Vol. 53 Issue 3, p513-522, 10p
Abstrakt: Current studies on dye-sensitized solar cells focus on using low cost materials with high efficiency. Platinum is the most desirable material for the counter electrode of dye-sensitized solar cells but it is an expensive material that limits its use. To reduce the cost, carbon-based materials are focused on as it proves to be the best material as far as cost is concerned. We investigated the use of composite paste of multiwall carbon nanotubes and activated carbon based on coconut fiber (1:1) for the preparation of counter electrodes. In place of liquid electrolyte, we have prepared solid polymer electrolyte based on Polyvinylidene fluoride (PVDF) due to its exceptional properties with graphite as filler. The obtained conductivity was found to be 5.63 × 10−3 S cm− 1. Anthocyanin pigment obtained from mulberry is being used as a natural dye. The addition of indium oxide (In2O3) to titanium dioxide (TiO2) increased the spectrum response of TiO2, which led to greater efficiency. The obtained efficiency was found to be 3.3 which is excellent in the case of natural dye-sensitized solar cells. [ABSTRACT FROM AUTHOR]
Databáze: Complementary Index
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