Which increases the efficiency of a photovoltaic or solar cell?
I.Replacing crystalline silicon with its non-crystalline form
II.Increasing the number of alternating p- and n-type layers of semiconductors
III.Decreasing the thickness of each alternating p- and n-type layer of semiconductor
A)I and II only
B)II and III only
C)I and III only
D)I,II,and III

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The Answer of Which increases the efficiency of a photovoltaic or solar cell?
I.Replacing crystalline silicon with its non-crystalline form
II.Increasing the number of alternating p- and n-type layers of semiconductors
III.Decreasing the thickness of each alternating p- and n-type layer of semiconductor
A)I and II only
B)II and III only
C)I and III only
D)I,II,and III

Which Increases the Efficiency of a Photovoltaic or Solar Cell