o Van Der Pauw Hall effect mobility The
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實驗目的 o 利用 Van Der Pauw 四點探針法和霍爾效應 (Hall effect)，量測半導體中多數載子濃度與 遷移率μ (mobility) 。 The Van Der Pauw Method Original paper by L. J. van der Pauw in 1958 http: //electron. mit. edu/~gsteele/vanderpauw. pdf
霍爾效應 (Hall Effect) For p-type: Remember, Hall effect is used to measure majority carrier density. For minority carrier density, we use Haynes-Shockley experiment.
霍爾效應 (Hall Effect) 由Lorentz force balance: 得到 (positive for ptype) 又 其中 故 稱 Hall coefficient (positive for ptype) （d為導體厚度） : Hall voltage : Hall field : Hall coefficient
霍爾效應 (Hall Effect) For n-type: 同理可得 (for n-type) (negative for ntype)
vs. Original quote:
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