Photovoltaic Solar Cell PPT and PDF Report
Photovoltaic Solar Cell PPT and PDF Report: Few facts of solar energy are explained below:
A perovskite structured compound is present in perovskite solar cell. A perovskite structured compound is a hybrid organic-inorganic lead or tin halide-based material and also has the active layer for harvesting the light. Perovskite materials like methylammonium lead halides are affordable to generate and also easy to manufacture. The efficiencies of the solar cells of the machines availing these materials have enhanced from 3.8% in the year of 2009 to 22.1% in the year of 2016 and have made this the fastest developing solar applied science to date. Perovskite solar cells became very attractive commercially because of its potential to achieve even more efficiencies of the solar cells and also because of the very low and affordable production costs.
Photovoltaic Solar Cell PPT and PDF Report
Features of Perovskite Solar Cells:
- The metal halide perovskite solar cell’s performance has made a fast enhancement in the efficiency of energy conversion from 4% efficiency in 2010 to 22% efficiency in 2016.
- Due to the feature of a high absorption coefficient, it needs the thickness of 500nm to absorb solar energy.
- In the month of July 2015, there were hurdles that the biggest perovskite solar cell is the size of a fingernail and they rapidly degrade in the moist environment.
The crystal structure of the absorber material is referred as perovskite structure and from this; the name of perovskite solar cell is derived. The usually studied perovskite absorber is (methylammonium lead trihalide) where X is a halogen atom like iodine, bromine, and chlorine. The methylammonium lead trihalide has an optical band gap between 1.5eV and 2.3eV depending on the content of halide. Formamidinum lead trihalide i.e. has also shown the band gap 1.5eV and 2.2eV.
The initial on perovskite in a solar cell which is in a solid state was in a dye-sensitize cell availing as an absorber and P-type hole transport layer. The solar cells which are based on tin perovskite absorbers like have also shown the efficiencies of low power conversion. In the recent advancement, the solar cells which are based on heterostructures and transition metal oxides perovskites like are studied.
Perovskite solar cells have a benefit in their processing over the traditional silicon solar cells. Because the traditional solar cells need costly and multistep processing and this has to be conducted at a high temperature of fewer than 1000 degrees centigrade in a high vacuum in a unique clean room with all the required facilities. Well, the inorganic-organic perovskite material can be generated with the easy methods of wet chemistry in a lab that has a traditional lab environment. The formamidinium lead trihalides and methylammonium lead trihalides have been made by availing a variety of solvent methods and vapor deposition methods; they have the strength of scaling up with relative feasibility.
In one step solution processing, a methylammonium halide and lead halide can be dissolved in a solvent and can be spin coated onto a substrate. Due to the steps like convective self-assembly and subsequent evaporation at the time of spinning results in dense layers. It results in the dense layers of well-crystallized perovskite material because of the powerful ionic interactions within the material. The simple coating of spin does not result in homogeneous layers but need the addition of other layers like DMSO, GBL, and toluene drips.
Other method availing room solvent-solvent extraction generates high-quality crystalline films with the accurate control over thickness down to 20nm. In the other solution processed method, a mixture of methylammonium halide and lead iodide dissolved in DMF is preheated. In the methods of vapor assisted, exfoliated or spin coated lead halide is annealed in the presence of methylammonium iodide vapor and this method maintains the temperature of around 150 degrees centigrade.
- Below is the schematic representation of a sensitized perovskite solar cel
Fig1: Sensitized Perovskite Solar Cell
- Below is the schematic representation of a thin film perovskite solar cell:
Fig2: Thin Film Perovskite Solar Cell
Why is Silicon PV still Expensive?
The silicon PV is still expensive because of the following reasons:
- Crystalline silicon production
- Crystalline silicon consumption
- Power conversion efficiency
- Cost of installation
Content of the Seminar and PDF Report for Photovoltaic Solar Cell
- Origin and History
- Basic Structure of a Photovoltaic Solar Cell
- Three Generations of Solar Cells
- Solar Perovskites
- Methylammonium Lead Halide Perovskite
- Chemistry of CH3NH3PbX3 solar perovskites
- Fabrication and Laboratory preperation
- Factors to be addressed
- Replacing Lead with Tin
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