Silicon, with 4 Valence Electrons, Is the Most Widely Used

question 34

Multiple Choice

Silicon, with 4 valence electrons, is the most widely used material for photovoltaic devices even though it is only a semiconductor. You can improve the conductivity with dopants. Which of these elements would best serve to create an p-type semiconductor when added to silicon?

• A) B
• B) C
• C) Ge
• D) P
• E) Both a and b

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