MIT 2.627 Fundamentals of Photovoltaics, Fall 2011 View the complete course: http://ocw.mit.edu/2-627F11 Instructor: Tonio Buonassisi This lecture is about semiconductor pn-junctions: how they are formed with doping; how current flows in them, differentiating between drift and diffusion currents; and voltage and bias across pn-junctions, with reference to band diagrams and IV curves. License: Creative Commons BY-NC-SA More information at http://ocw.mit.edu/terms More courses at http://ocw.mit.edu/