In order to develop lower-cost, semiconductor materials for solar cells, the California Institute of Technology (Caltech) and Dow Chemical Company have agreed to join together in a four-year contract.

The $4.2m project will aim at exploring the earth-abundant materials for solar-energy applications.

Initially, the focus will be on direct-bandgap semiconductor materials that make use of less costly and commonly available elements, that offer lower cost than those used in today’s thin-film photovoltaic (PV) semiconductors.

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Latest and innovative scientific inventions are moving people and the world towards the period of "personalized solar energy", in which consideration is being given to generating electricity through solar energy instead of huge central generating stations.

The subject on solar energy was discussed in a report presented by an international expert. It discusses an economical process for saving solar energy that in turn could power homes and plug-in cars in the upcoming years.

Moreover, this will not only benefit an individual but the entire environment by keeping it fresh and clean.

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Solar panels can be of same or different sizes and the amount of electricity by them also varies. Solar panels of the same size can generate changeable amount of electricity.

This difference is due to the variations in the functioning age of the solar cells, the quality of the solar cells, and kind of tools and technology used to produce them. The amount of electricity depends on the efficiency of the solar cells.

Precisely, though two solar panels may be indistinguishable, there are a number of other factors that should be the area of concern. Cost is calculated depending on the Quality, age, and technology.

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