What is NOT true about the thermal oxide layer?
A thermal oxide layer can serve as a passivation layer.
B. A thermal oxide layer acts as an insulator and forces the electrons to flow in the emitter.
C. It creates a back surface field at the back side of the solar cell and thus it reduces the surface recombination velocity.
D. The oxide layer can be thermally grown.
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Which of the following concepts are used in the PERL (Passivated Emitter Rear Locally diffused) solar cell?Note that more than one correct answer is possible.
A. Inverted pyramids
B. Multi-junctions
C. Bifacial configuration
D. Photolithographic fabrication of front metal grid
Which of the following statements is false?
A. Increasing the length of the finger increases the resistive losses.
B. Increasing the finger spacing decreases the power losses due to shadow.
C. Increasing the finger width increases the power losses due to shadow.
D. Increasing the finger width increases the resistive losses.
What kind of losses are related to the design of the top contact of a solar cell?
A. Shading losses
B. Resistive losses in the top contact
C. Resistive losses in the emitter
D. All of the above
Consider a purely grid-connected PV system, i.e. without any battery storage.The PV array efficiency is 20%, while the grid-connected inverter efficiency is 90%. Assuming a 2% loss in the cables, what is the combined efficiency of the PV system from the PV array to the grid?
A. 1.6%
B. 16%
C. 1.764%
D. 17.64%
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