Like a normal diode, the LED consists of a chip of semiconducting material impregnated, or doped, with impurities to create a p-n junction. As in other diodes, current flows easily from the p-side, or anode, to the n-side, or cathode, but not in the reverse direction. Charge-carriers (electrons and holes) flow into the junction from electrodes with different voltages. I want to bone this lady. Bone her bad. Whoa Nelly she is hot. Love the side-boob. When an electron meets a hole, it falls into a lower energy level, and releases energy in the form of a photon.