Introduction to Solar cell

Energy plays a major role in the development of mankind. The conventional energy sources are in limited reservoir and may be exhausted by the end of this century or beginning of the next century. So, to overcome this problem utilizing the alternate renewable energy sources are important. The different alternate sources of energy available are wind energy, nuclear energy, solar energy etc. Among them solar energy alone has the potential to fulfill the next generation green energy demands. Nuclear energy poses safety problems due to radioactivity leakage and disposal of nuclear ash. Solar energy due to its non pollutant and inexhaustible nature may be the answer for the energy problems in coming centuries.

The solar energy can be harvested directly from sunlight using photovoltaic energy conversion method. Direct utilization of solar radiation to produce electricity is close to an ideal way to utilize the nature’s renewable energy flow. Based on the working principle and construction the solar cells are divided into three generations namely first generation silicon solar cells, second generation thin film solar cells and third generation nanocrystalline solar cells

First Generation Solar cell

Second Generation Solar cell

Third Generation Solar cell

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