Question

1471_1 /courses/18032750/Assignment%202%281%29 pof Q2) Figure 1 shows the photon flux Ф of a light source having a cross-section area 3cm? The light source has operated just for two seconds to illuminate a semiconductor material (its area is 2em2 and band gap E, l.leV) a) How many photons has the light source emitted? b) How many electrons could be generated in the semiconductor material? c) How many photons can be absorbed by the semiconductor material? d) Calculate the power density H of the light source at E eV. 300 200 100 0.8 1.0 1.2 14 Elel') Figure 1 3 of 2Page

Answer 1

photon flux (Φ) sec.cm1 300 סטו o.8 1.2 E (ev) z x 200 3001100 200 80o photons ae Smittedbu the 1.1eV That in thise case -2, h ABcax lime co1 20D

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