Sun does not need Vitamins.
A bit of sun is good for you, it helps the body produce vitamins. A lot of sun is bad for you, it causes premature ageing of the skin and increases the risk of skin cancer.
Chlorophyll can not produce the food necessary without the sun.
The sun provides vitamin D.
Solar panels They are panels (any size you want) that make electricity from the light of the sun
yes
No, but it wouldn't do anything useful either. Plants produce their own vitamins.
B vitamins
Energy
The gut microbiota, specifically the large intestine, is home to bacteria that produce vitamins as byproducts of their metabolism. These vitamins include vitamin K and some B vitamins like biotin and folate.
The sun produce light and nuclear energy
the energy sun and stars produce is fusion.
no it just adds vitamin D