Until 2006, Sharp Corp. was the leading photovoltaic (PV) device supplier. In 2007, Germany's Q-Cells AG and China's Suntech Power Holdings Co. Ltd overtook Sharp. In 2008, First Solar gained on Sharp and Suntech with its thin-film PV panels made with cadmium telluride. The rankings by IC Insights are based on the peak-megawatt value of the PV devices produced and sold by each supplier. These include PV cells and thin-film PV panels. Cell-based panels are not included to avoid counting cells twice.
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