This paper mainly introduces the changes of solar energy in the history of more than 3000 years, including how people use it, and what kind of effect has been achieved in the process.

This paper mainly introduces how solar energy will affect the future and what other kinds of solar energy will be utilized in the future.

This article mainly introduces the various economical and practical tools invented by using solar energy, and how these inventions facilitate people's life and work.

This article mainly makes a detailed analysis of the prospects of solar energy in 2020 and beyond and clarifies whether solar energy still has a bright future.

This paper mainly introduces whether the bifacial solar needs an in-depth research and if the research results can be obtained.