12 eV to 0.05 eV. For the reason that potential big difference (EB) is so low, the boron is able to thermally ionize at space temperatures. This allows for free energy carriers within the conduction and valence bands thereby making it possible for greater conversion of photons to electrons. At https://flenzy.store/wireless-6000mah-high-pressure-car-garden-washer-with-foam-generator/