Mono PERC (Passivated Emitter and Rear Cell) solar cells are a type of crystalline silicon solar cell that has become increasingly popular in recent years. The PERC technology improves the efficiency of traditional mono crystalline solar cells by adding a passivation layer to the rear surface of the cell, which reduces the electron recombination rate and improves cell efficiency.
The passivation layer used in PERC cells is typically made of silicon nitride (SiNx) or aluminum oxide (Al2O3). The addition of this layer to the rear surface of the cell helps to reduce the recombination of electrons, which increases the cell’s efficiency and power output.
In a traditional mono crystalline solar cell, the metal contacts on the rear surface of the cell can cause shading and reduce the efficiency of the cell. However, with PERC technology, the rear surface is passivated, which means that the contacts can be moved to the front of the cell, where they can be more easily connected to other cells to form a solar panel.
PERC technology has become increasingly popular in the solar industry because it offers higher efficiency and lower costs than traditional mono crystalline cells. The higher efficiency means that fewer cells are needed to produce the same amount of power, reducing the overall cost of the solar panel. Additionally, the passivation layer on the rear surface of the cell also helps to reduce degradation over time, making PERC cells a durable and reliable option for solar panel manufacturing.
Mono PERC solar cells are available in a variety of sizes, depending on the manufacturer and the intended application. The most common sizes for mono PERC solar cells are 156mm x 156mm and 156mm x 78mm. These sizes are referred to as “p-type” cells and “half-cut” cells, respectively.
However, there are also larger sizes available, such as 166mm x 166mm, 182mm X 182mm and 210mm x 210mm, which are referred to as “large format” cells. These larger cells can offer higher power output and efficiency, but may also require specialized manufacturing processes and equipment.
The size of the mono PERC solar cell used in a solar panel will depend on the desired power output and physical dimensions of the panel. Solar panels typically use multiple solar cells connected in series and/or parallel to achieve the desired voltage and current output.
The highest efficiency of mono PERC (Passivated Emitter and Rear Cell) solar cells achieved is around 24.5%. However, it’s important to note that the efficiency of solar cells is a rapidly changing field, with new records being set frequently. Additionally, the efficiency of a solar cell can vary depending on factors such as the materials used, manufacturing process, and operating conditions.
