Boron carbide amorphous solid with tunable band gap

Boron carbide BxC (x=1/6−10) powders were synthesized through a microwave-assisted carbothermic reduction reaction as potential clean energy material. Their crystallographic structures and optical properties characterized. X-ray diffraction electron indicated that the amorphous. Electron energy-loss spectroscopy demonstrated composition of boron carbon was in amorphous materials, their chemical bonding disclosed from Raman scattering spectroscopy. UV–vis absorption bandgap bulks varied 2.30eV to 3.90eV, tuned by boron/carbon element ratio. The photovoltaic materials. A short-range ordering model established explain properties.