Question

Q2) Figure 1 shows the photon flux Ф of a light source having a cross-section area 3cm2. The light source has operated just for two seconds to illuminate a semiconductor material (its area is 2cm2 and band gapE). a) b) c) d) How many photons has the light source emitted? How many electrons could be generated in the semiconductor material? How many photons can be absorbed by the semiconductor material? Calculate the power density H of the light source at E-leV. sec.cm 300 200 100 0.8 10 1.2 1.4 Ele Figure 1

Answer 1

only (a) and (d) are answered

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