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Fundamentals of Solar Cell Technology

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Questions and Answers

What is the energy gap in a semiconductor referred to as?

Eg (correct)

E-valence energy

E-conduction band

E-hole energy

What is the primary function of a solar cell in a photovoltaic system?

To convert mechanical energy into electrical energy

To convert light energy into electrical energy (correct)

To convert thermal energy into electrical energy

To convert chemical energy into electrical energy

What is the term for the current generated by a solar cell when it is not connected to a load?

Light-generated current

Short circuit current (correct)

Current at maximum power

Dark saturation current

What type of losses occur in a solar cell due to the inability of the semiconductor to absorb below band gap light?

Band gap losses Signup and view all the answers

What is the term for the non-ideality factor of a solar cell?

m Signup and view all the answers

What is the primary goal of researchers in developing different materials and structures for solar cells?

To extract maximum power from the device while minimizing cost Signup and view all the answers

What is the typical efficiency of commercial solar cells?

Less than half of 30 percent Signup and view all the answers

What is the primary advantage of crystalline silicon cell modules?

Long lifetime of 20 years or more Signup and view all the answers

What is the primary benefit of compound semiconductor thin-film cells?

Low cost and acceptable conversion efficiencies Signup and view all the answers

What type of solar cells are used in specialized applications like power satellites?

High-efficiency solar cells from single crystal silicon or compound semiconductor Signup and view all the answers