The most efficient Solar Panel consists of many solar cells. These cells are made of elements called silicon, which are abundant in our world. Each cell, just like batteries, consists of a positive and a negative layer to create an electric current.
When photons from the sun are absorbed by these cells on the solar panel, the energy released causes the electrons to move freely.
Electrons make their way to the bottom of the panel and electricity is produced by this current of Electrons.
Many forms of silicon used in the most efficient Solar Panel are similar; the main difference is the purity of the silicon.

Solar panels efficiency; it is directly proportional to the purity, the processes to increase the silicon purity are both numerous and costly.

Efficiency in solar panels is related to how much percent of the radiation falling on the solar panel surface area will be converted into electrical energy. For example, this rate is 18% for polycrystalline solar panels and 24% for monocrystalline solar panels.
Monocrystalline Solar Panels The Most Efficient Solar Panel
Solar cells made of monocrystalline silicon, as we described above, have an easily recognizable external appearance, also called single-crystalline silicon. Monocrystalline solar panels are dark, close to black.
Monocrystalline cells, which can reach high efficiency, are made of ingots with rounded edges and regular molecular arrays.

Advantages of Monocrystalline Solar Panels
Monocrystalline Solar Panels are made of high grade silicon, so monocrystalline solar panels have high efficiency. The efficiency rates of these panels are around 24%.

They perform better in low light conditions than polycrystalline solar panels with similar polka dots. Therefore, Monocrystalline solar panels produce more in less sunlight than polycrystalline panels.