【正文】 b) Boron atoms must be added So cm cm_______________________________________(a) ntype(b) cm electrons are majority carriers cm holes are minority carriers(c) so cm_______________________________________ For Germanium(K) (eV)(cm) and cm(K) (cm) (eV) _______________________________________(a) For cm, eV cm, eV cm, eV cm, eV (b) For cm, eV cm, eV cm, eV cm, eV_______________________________________(a) cm so Now By trial and error, K(b) At K, eV At K, eV cm eV then eV(c) Closer to the intrinsic energy level._______________________________________ At K, eV K, eV K, eV At K, cm At K, cm At K, cm At K and K, cm At K, cm Then, K, eV K, eV K, eV_______________________________________ (a) For cm, eV cm, eV cm, eV cm, eV (b) For cm, eV cm, eV cm, eV cm, eV_______________________________________(a) or eV(b) Impurity atoms to be added so eV (i) ptype, so add acceptor atoms (ii) eV Then or cm_______________________________________ so or cm_______________________________________(a) Silicon(i) eV(ii)eV cm cm Additional donor atoms(b) GaAs (i) eV (ii)eV cm cm Additional donor atoms_______________________________________(a) eV(b) eV(c) For part (a)。4. 歲月是無情的，假如你丟給它的是一片空白，它還給你的也是一片空白。你必須努力，當有一天驀然回首時，你的回憶里才會多一些色彩斑斕，少一些蒼白無力。2. 若不是心寬似海，哪有人生風平浪靜。有時候覺得自己像個神