Reuters: Japanese electronics conglomerate Sony Corp (6758.T: Quote, Profile, Research) said on Sunday it has developed dye-sensitized solar cells with an energy conversion efficiency of 10 percent, a level seen necessary for commercial use. Dye-sensitized solar cells, which use photosensitive dye and do not require costly and large-scale production equipment, are seen as a promising next-generation solar cell variety and potential threat to silicon-based solar cells. Germany’s Q-Cells …