The ever increasing demand and growing cost of silicon has made thin film photovoltaic’s a competing substitute to silicon solar. Thin film photovoltaic (PV) modules are seen as a realistic alternative for a cost effective generation of electricity from sunlight. They are often referred to as the second generation of photovoltaic technology. Some promising materials for thin film solar cells include amorphous silicon, cadmium telluride, CuInSe2 and its alloys. While all of these materials are low band gap, they are all polycrystalline as well leading to a loss in efficiency due to grain boundary recombination. Amid the polycrystalline thin film solar, CIGS solar cells have been documented in various pieces of literature as being unrivalled in efficiency.
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