Wafer based technology.- Materials Science and Engineering.- Crystalline and non-crystalline Si solar cell.- Poly Crystalline & Amorphous Materials.- Nano sciences and nanotechnologies.- Nano-materials and Nano-composites.- Nanotube Silicon Solar cell.- Thin Film Solar Cell Technology.- Organic-Inorganic Solar Cell.- Single or Multijunction Solar Cell.- Polymer Based Solar Cell.- Perovskite Solar Cell.