Yup. I've been looking around about it for a while, I delved into electronics books, they mention things like hole/electron flow, energy bands, but I haven't understood how transistors actually work. I've heard that diodes, transistors and other semiconductor materials involve tunneling, so about diodes, I had this conclusion: when you apply an external electric field to the ends of diodes, energy levels are altered, so does the tunneling probability. (of course, I haven't tried to compute it actually, I don't know how Schockley wrote that exponential thing). I hope this's something close to reality. Well, I'm a physics undergrad who knows some quantum mechanics and tunneling. So, can someone explain what's going on within BJT and FET in terms of quantum mechnics? I'm aching for a real explanation! Thanks!