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| Theory of solar cells ： ウィキペディア英語版 |
Theory of solar cells
The theory of solar cells explains the physical and chemical processes by which photons are converted into electric current when striking a suitable semiconductor device. The theoretical studies are of practical use because they predict the fundamental limits of solar cell, and give guidance on the phenomena that contribute to losses and solar cell efficiency.
==Simple explanation==
# Photons in sunlight hit the solar panel and are absorbed by semi-conducting materials.
# Electrons (negatively charged) are knocked loose from their atoms as they are excited. Due to the special chemical composition of solar cells, the electrons are only allowed to move in a single direction. The chemical bonds of the material are vital for the process to work, and often silicon, bonded with boron or phosphorus is used in different layers.
# An array of solar cells converts solar energy into a usable amount of direct current (DC) electricity.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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