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定義:光電二極體的響應度 (responsivity, Rλ)是對光的靈敏度的一種測量。它被定義為在某特定波長下光電流(Ip)與入射光功率P的比值。
響應度,Rλ = Ip /P
換句話說,它是衡量光功率轉換為電流的有效性的標準。它隨入射光的波長、施加的反向偏壓和溫度而變化。