At a very early stage CETC Solar Energy addressed the question of how they could optimise its Solar Modules. The answer: by ensuring the constant, uniform efficiency of all the incorporated cells. This has been duly achieved in the form of our multicrystalline and monocrystalline solar cells that are available in a variety of formats and output classes and are manufactured in our production facilities equipped with the world's latest solar cell manufacturing systems.

Years ago, CETC Solar Energy improved the state-of-the-art by integrating a high-efficiency rear surface design - the PERC (passivated emitter rear cell) structure. The PERC structure offers a significant efficiency boost and has steadily gained traction in recent years and is compatible with common screen printing techniques. Its variations include bifacial P-type and N-type solar cells. Today, the PERC design has already become the dominant cell architecture and currently accounts for 80% of worldwide crystalline silicon solar cell production but is expected to drop to 50% by 2031, as the competing TOPCon (tunnel oxide passivated contacts) technology is gaining ground. It is estimated that the TOPCon solar cells will gradually capture 50% of the market shares within the next decade compared to the current market share of only 15%. Additionally, it is projected that there was a gradual increase in the market shares of Si-heterojunction (HJT) and HIT solar cells of about 10% in 2025 and 18% in 2031, respectively.

Features

• Outstanding surface quality.
• Advanced diffusion technique ensuring the homogeneity of energy conversion efficiency of the cell.
• Advanced PECVD film forming, providing a dark blue silicon nitride anti-reflection film of homogenous color and attractive appearance.
• High quality metal paste for back surface and electrode, ensuring good conductivity, high pulling strength and ease of soldering.
• Efficiency-increasing 4-busbar, 5-busbar, 6-busbar and MBB technology that optimises electricity collection and ensures optimal electricity yield from the solar energy system.
• First-rate efficiencies and superlative output consistency.
• Excellent anti-PID performance (under the following conditions: 60°C, 85% humidity, -1000V, 96 hours).
• Lower power loss through encapsulation. Appropriate electrical performance parameters (high voltage and low voltage). Current evaluation and positive tolerance for the cell performance compensation guarantee a very low loss from cells to modules.
• Outstanding solderability. Application of double-printing technology in production improves solderability.
• Meticulous tolerance and quality checks guarantee a constantly high solar cell output capability and the resultant excellent quality of CETC Solar Energy Modules.