Question

D FILE at 1:11 A.M. (by your watch) and sunset is at 4:255 P.M. It is July 1st (8 =23.1", EOT --3.5 min). The time zone centered at 120 west. Where are you? 011: True or False? Discus 1. Major carriers are the principle mobile charges created by light in semiconductors. 2. The conduction band is so-called because its structure determines the electrical properties of a semiconductor. 3. Cells made from low-bandgap semiconductors usually produce large current. 4. A solar cell can be pictured as a current generator connected in series with a diode. 5. The main disadvantage of amorphous silicon for solar cell manufacture is its low light absorption. 6. The voltage output of a solar cell is directly proportional to the irradiance 7. Recombination represents the principle voltage loss mechanism in good solar cells 8. Pure silicon is expensive because silicon ore is rare. Tutorial Dr Hussein A. Kazem

Answer 1

1. False

As in semicondutors majority carriers will produce because of combination of P type and N type materials

2. FALSE

AS band gap will determine electrical properties

3. TRUE

YES if low band gap electrons can flow easily from conduction band to valence , so large amount of current will pass.

4. FALSE

Solar cell is current genertor in parallel with DIODE .

5.FALSE

6.FALSE

CURRENT IS PROPORTIONAL TO IRRADIANCE

7.TRUE

8.FALSE