Dye sensitized solar cell (DSSC) with natural dyes extracted from Jatropha leaves and purple Chrysanthemum flowers as sensitizer

Abstract

Abstract. DSSC (Dye-Sensitized Solar Cell) prototype has been investigated using Jatropha leaves and purple Chrysanthemum flowers as natural dyes. DSSC consists of working electrode and counter electrode. A working electrode composed of semiconductor nanoparticles TiO2 that has been coated with dye molecules. Dye molecules serve as light photon catchers, while semiconductor nanoparticles TiO2 function to absorb and forward photons into electrons. In the electrode counter given catalyst carbon, serves to accelerate the reaction kinetics of triiodide reduction process on transparent conductive oxide (TCO). DSSC using TiO2 as a semiconductor material and natural dyes as sensitizer from Jatropha leaves and purple Chrysanthemum flowers are successful produced. The physical properties of the working electrode have been determined by using XRD and the chemical properties of the TiO2 powder and dye powder using FTIR and dye solution using UV-Vis. The resulted fabrications are also examined its I-V characteristics. The best performance is generated by mixed dye 1.91 x 10 -3 % compared than those DSSC for dye extracted from Jatropha leaves or purple Chrysanthemum. The characterization results show that the higher of the absorption wavelength of the DSSC efficiency is high.

Optimizing a Simple Natural Dye Production Method for Dye-Sensitized Solar Cells: Examples for Betalain (Bougainvillea and Beetroot Extracts) and Anthocyanin Dyes

“…Mixtures of several dyes with different absorption spectra are often prepared to obtain the maximum absorption within the visible and infra-red region. For DSSCs applications, these mixtures co-sensitize the device to increase the global absorption using the widest wavelength range possible and thus maximizing the efficiency Works including the study of natural dye mixtures show different approaches [6,[26][27][28]64,[72][73][74][75]. Chang and col. used chlorophyll from bougainvillea leaves and anthocyanins from blueberries [72], finding that the efficiency of the cell improved when using a 1:1 dye mixture (0.62% chlorophyll, 0.64% anthocyanins and 0.75% dye mixture).…”

“…Further purification, combinations, analysis, and use constitute the body of the studies, together with new ideas about cell implementation. Researches have focused on the influence of different factors on the final performance, such as: solvent for extraction and adsorption [21][22][23], extraction time [18], pH and temperature during dye adsorption onto the nanoporous film [24], dipping time [25], dye mixing or co-sensitization [26][27][28], together with "tandem" cells [28], film thickness [22,29] etc. Some papers include also theoretical calculations or simulations [24,30,31], for example, adsorption isotherms of a dye onto TiO 2 film are fitted by models established through statistical physics treatment [24] or chlorophyll is used as a reference dye to simulate absorption spectra and theoretically calculate ground and excited state properties [30].…”

Advances on Dye-Sensitized Solar Cells (DSSCs) Nanostructures and Natural Colorants: A Review

“…Table 2 shows different extraction approaches. In the document [34], the sensitizer is extracted from jatropha and purple chrysanthemum leaves, obtaining an efficiency of 5.53 × 10 −6 in jatropha leaves and 1.91 × 10 −3 in purple chrysanthemum. For this research, the process that was carried out was to cut the leaves approximately 2 cm × 2 cm.…”

Natural dye‐sensitized solar cells: Case study with tropical organic pigments

“…However, Ru-based photosensitizers are undesirable because of their high cost, rarity, complex synthetic procedures, and negative environmental impact. [7][8][9][10][11][12][13] Although the highest efficiency obtained from a natural dye is 2.06% with a Sicilian bean extract, natural pigments are not poisonous, can be easily discarded, and then are more environmentally friendly. Nature provides an enormous variety of structures for this kind of technology, and combinations make it possible to increase cell stability and efficiency.…”