問題詳情

57. Silicon (Si) is a semiconductor material whose properties fit perfectly in solar cells to convert thelight energy into electrical energy. Based on this evidence, what the value of energy gap of Siprobably is?
(A) several tenths of eV
(B) 1.1 eV
(C) 3.1 eV
(D) 5.1 eV
(E) 7.1 eV

參考答案

答案：B
難度：計算中-1
書單：沒有書單，新增

用户評論

【面試倒楣鬼-22幸運上後西】評論

炫炮的方式考光電效應-功函數太陽能電池通常是用可見光轉電, 可見光約400~700nm,這樣算下來 1240/400~700 = 3.1V~1.7V, 可見光的eV能量落在這之間,而矽的游離能應該會低於前述範圍,才能產生光電子因此(B)是比較合理的選擇,