What is the element required for solar energy conversion?
(1) Beryllium
(2) Tantalum
(3) Silicon
(4) Ultra pure carbon
Answer: (3) The most prevalent bulk material for solar cells is crystalline silicon (abbreviated as a group as c-Si), also known as “solar grade silicon.” Bulk silicon is separated into multiple categories according to crystallinity and crystal size in the resulting ingot, ribbon, or wafer.
