PERC SE SOLAR CELL | P-Type

PERC SE (Passivated Emitter and Rear Cell – Shingled Emitter) solar cells represent an advanced photovoltaic technology that combines two cutting-edge approaches to enhance performance and efficiency. By integrating the PERC (Passivated Emitter and Rear Cell) technology with the Shingled Emitter design, PERC SE cells achieve superior efficiency and reliability. PERC technology reduces electron recombination losses through a passivated emitter and rear layer, while the Shingled Emitter design segments the cell into overlapping strips.

The passivated emitter is a specialized layer applied to the silicon wafer’s surface to reduce surface recombination of charge carriers, enhancing the cell’s overall efficiency by preventing the loss of electrons and holes at the contact points. The rear cell, or the back side of the solar cell, incorporates additional technologies and layers to further decrease recombination losses and improve light absorption. Shingled Emitter technology involves cutting the cell into overlapping strips that are interconnected to form a complete unit. This design approach reduces shading and resistive losses, significantly improving the cell’s efficiency and performance.

P-type PERC solar cells use silicon wafers doped with boron to create a positive charge carrier base. These doping forms a P-N junction with a negatively doped N-type layer on top. When sunlight strikes the cell, it generates electron-hole pairs separated by the electric field at the junction, producing electrical current. P-type cells are cost-effective, reliable, and widely used, providing a solid foundation for photovoltaic technology.

TECHNOLOGY FEATURES AND FUNCTIONS

PERC SE solar cells incorporate several advanced features designed to enhance efficiency and performance. These features collectively enable PERC SE solar cells to achieve higher efficiency, superior performance in diverse conditions, and greater durability compared to traditional solar cells. Key features include:

Passivated Emitter Layer: Reduces electron recombination losses, enhancing overall efficiency.
Silicon Wafer: Acts as the core material for converting sunlight into electrical energy.
Anti-Reflective Coating (ARC): Reduces light reflection, increasing light absorption.
Front Contact Grid: Minimizes shading and resistive losses while collecting electrical current.
Passivated Rear Layer: Further reduces recombination losses on the rear side.
Rear Reflector: Reflects light back into the silicon wafer to improve absorption.
Rear Contact Grid: Enhances current collection from the back surface.
Shingled Emitter Design: Segments the cell into overlapping strips that are interconnected, reducing shading and resistive losses.

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Image 3 Technical Drawings Perc Cell Structure

TECHNOLOGY BENEFITS

P-type PERC SE solar cells offer enhanced efficiency, increased power output, improved performance, and greater durability, due to their advanced design. The passivated emitter and rear cell design reduces recombination losses and boosts efficiency with light-reflective layers, while the shingled emitter design minimizes shading and resistive losses, maximizing energy production. Their performance remains strong in both high temperatures and low-light conditions, and their durable design ensures mechanical stability and longevity. Additionally, these cells provide a modern aesthetic and reduce overall costs through fewer panels and lower installation and maintenance expenses, making them a reliable and cost-effective choice for various solar energy applications.

Enhanced Efficiency

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PERC cells enhance energy conversion efficiency by reducing electron-hole recombination losses and using a rear passivated layer with a reflective surface to reflect additional light back into the silicon wafer, thereby increasing the amount of light converted into electricity.

Increased Power Output

The shingled emitter design increases power output by maximizing energy production within the same panel area, making it especially advantageous for installations with limited space.

Improved Performance

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The passivated emitter layer enhances efficiency at high temperatures, ensuring reliable energy production in hot climates, while the advanced light absorption capabilities improve performance in low-light conditions.

Better Durability

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The shingled design boosts cell efficiency and mechanical stability, making the cells more resistant to physical damage, which enhances long-term durability and reduces maintenance needs.

Increased Reliability

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PERC solar cells are engineered to endure environmental stressors such as extreme temperatures and moisture, resulting in a longer lifespan and greater reliability, ensuring stable and dependable power generation over many years.

Beautiful Aesthetics

The sleek, modern look of the shingled emitter design enhances the visual appeal of solar panels, which seamlessly integrates with various architectural styles and solar solutions.

Cost Effective

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Solar panels made from PERC SE solar cells are cost-effective because they generate more electricity per unit area, reducing the number of panels needed and lowering installation and maintenance costs.

Investment Confidence

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Solar solutions with PERC SE technology boosts investment confidence by ensuring higher efficiency, durability, and reliability, which leads to better long-term returns and reduced risk.