A triple junction Gallium arsenide(GaAs) thin film solar cell can work toharvest solar energy in three bandgaps (250nm-700nm, 700nm-900nm,900nm-1300nm). (1) Please find the fraction of the solar emission energy in each bandversus the total solar emission power.(2) Assume 50% of the emission reaches to the solar panel is harvestedin every band as electrical energy, what is the solar cell energy conversionefficiency.(3) Find the percentage of energy output by each P-N junction/bandgapcompared to that from the total three junctions