Abstract: The photovoltaic market is booming with over 30% per annum compounded growth over the last 5 years. Most of the solar cells being supplied to this market are “first generation” devices based on crystalline or multicrystalline silicon wafers. “Second generation” thin-film solar cells based on amorphous silicon/hydrogen alloys or polycrystalline compound semiconductors are starting to appear on the market in increasing volume. PV remains the most rapidly growing energy technology by a wide margin. Different methods have been adopted to increase cell efficiency and various research done on solar cell have been discussed in this paper.

Keywords: PV cell