Twelve eV to 0.05 eV. Since the likely variance (EB) is so small, the boron has the capacity to thermally ionize at area temperatures. This permits for free energy carriers inside the conduction and valence bands thus allowing for greater conversion of photons to electrons. Looking for solar panel installation? https://flenzy.store/15kw-20kw-high-efficiency-vertical-wind-turbine-generator/