半導體物理與器件第四版課后習題答案4(存儲版)
【正文】 ________________(a) Let Then To find the maximum value: which yields The maximum value occurs at (b) Let Then To find the maximum value Same as part (a). Maximum occurs at or _______________________________________ where and Then or _______________________________________ Plot_______________________________________ Plot_______________________________________ Silicon: , eV Germanium: , eV Gallium Arsenide: , eV_______________________________________ (K)(eV)()(eV)_______________________________________(a) meV(b) meV_______________________________________ Let constant Then Let so that We can write so that The integral can then be written as which bees _______________________________________ Let for Then Let so that We can write Then or We find that So _______________________________________ We have For germanium, , Then or The ionization energy can be written as eV eV_______________________________________ We have For gallium arsenide, , Then The ionization energy is or eV_______________________________________(a) eV(b) eV(c) cm(d) Holes(e) eV_______________________________________(a) eV(b) eV(c) cm(d) eV_______________________________________(a) eV eV(b) cm(c) ptype_______________________________________(a) eV cm eV
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