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This research paper is aimed at evaluating the use of natural dyes from blackberry (Rubus glaucus) obtained naturally for their subsequent application in laboratory solar cells to place them in dye-sensitized solar cells (DSSC) for the generation of electrical energy. The problem of the study is the high demand generated by global warming. Natural dyes were used to sensitize six solar cells, which were tested for their ability to absorb ultraviolet and visible light using a spectrophotometer in the ultraviolet-visible range, a solar simulator, and a current-voltage tester. The voltmeter was used to show how much energy each solar cell emitted over eight to 18 hours of daylight, with a required absorbance of 400-500 nm using six solar cells that had been sensitized with natural dyes. To reduce the high demand generated by global warming, use natural dyes from plant species as a supplement to improve efficiency in capturing renewable energy (solar) and converting it into electrical energy. Blackberries are lyophilized and then macerated for one day at room temperature in a dark, cool place to maximize dye’s absorption. With two electrodes, the photo and contra, and an electrolyte in between, a Gratzel-type DSSC can be built. Using the doctor blade technique, the titanium dioxide film is added to the fluorine-doped tin oxide (TiO2) in the photoelectrode. By immersion, a natural colourant is then applied. TiO2 glass with a platinum film deposited on it serves as the counterelectrode.

If high-efficiency organic isotherm models for mobile processors can be found, a variety of energy harvesting devices, such as Peltier coolers composed of flexible and transparent thin-film materials, might be manufactured. The thermoelectric characteristics of three zinc porphyrins (ZnP) were studied. Theoretical analyses of electron transport across a potassium (Zn-Diphenyl porphyrin: Zn-DPP) molecular sandwiched between electrode surface with three distinct connections were investigated. The contribution of this research is to see what happens because once pyridine is added above the surface of the zinc-porphyrin skeleton, the “edge-over-edge” dimer created from stacked formed rings has a high electrical conductance, minimal exciton thermal conductance, and a large thermal diffusivity on the order of 300 V K1. At room temperature, these variables add up to a projected ZT 4 figure of merit, the greatest ZT for a single organic molecule ever seen. The stacked arrangement of the porphyrin rings causes low phonon thermal conductance, which delays phonon transport across the edge-over-edge molecule and increases the Seebeck coefficient, resulting in a higher ZT value.

The production of fossil fuels seems to be in falling trend as the most commonly used fuel is getting depleted day by day on the other hand consumption is increasing, thereby leading us to an inevitable position in near future. The environmental pollution is also the key concern and fossil fuels are the major pollutants. Pollution from burning diesel causes health problems and environmental hazards. In order to meet these requirements and overcome the problems we have to look towards alternatives to petroleum based fuels like petrol and diesel. Vegetable and animal fat oils are considered as good alternatives to diesel as their properties are close to diesel since they offer the advantages of being used readily in existing diesel engines without alterations. Initially, a base line data was generated with diesel, jatropha and fish oil. Subsequently, the fish oil was converted into biodiesel by degumming and neutralization in the chemistry laboratory. This project aims at finding an alternate to the conventional diesel fuel by investigating the feasibility of biodiesel from fish oil as fuel in diesel engine for various blends. Hence various tests were carried out in the diesel engine of kirloskar make and the various characteristics like flash point, fire point and viscosity were studied and the results are tabulated. The results obtained after conducting the experiments shown that using biodiesel prepared from fish oil can be an effective and eco friendly fuel in the present day engine without any modifications. J. S. Binoj "Feasibility analysis of using waste fish oil as an alternate fuel" Published in International Journal of Trend in Scientific Research and Development (ijtsrd), ISSN: 2456-6470, Volume-2 | Issue-3 , April 2018, URL: https://www.ijtsrd.com/papers/ijtsrd11316.pdf