Write a report that that illustrates the Principles of Operation and Features of Photovoltaic Systems.

the report should illustrate “ the Principles of Operation and Features of Photovoltaic Systems” ( with photo illustrations) to cover:

• The principle of operation
• Overview on the different PV cells designs
• Discussing the characteristic performance curve

the references should be website,
and the report must contain picture to explain the idea and type of photo voltaic clearly.