Industry First! Jinergy Overcomes Technical Challenges in Cell Coating
Recently, Jinneng Clean Energy Technology Ltd. (hereinafter referred to as “Jinergy”) had achieved a technological breakthrough in the core production process of photovoltaic cells. Its independently developed front-side laminated gradient anti-reflection coating technology realizes optimized light management, when light is incident on the PV cells, marking an industry-first technology in PV cell coating process. This technology not only effectively boosts cell photoelectric conversion efficiency, but also raises production capacity and lowers manufacturing costs, injecting new momentum into the high-quality development of the photovoltaic industry in cost reduction, efficiency improvement and green production.
As a critical step of in photovoltaic cell production, conventional coating processes result in high light reflectivity due to sudden changes in refractive index at the interface between coating layers, thereby limiting light utilization and photoelectric conversion efficiency. To overcome this industry bottleneck, Jinergy established a dedicated cell process R&D team. After multiple rounds of intensive technical research, the team innovatively developed the front-side laminated gradient anti-reflection coating technology.
Through meticulous structural design, this technology achieves seamless and smooth light transition between different film layers, fundamentally eliminating light reflection at film layer interfaces. In practical applications, it demonstrates exceptional anti-reflection performance across a broad spectral range, greatly improving overall light utilization efficiency and ultimately raising the photoelectric conversion efficiency of PV cells by 0.05%. Although the figure appears slight, it is sufficient to create a significant product advantage in the PV industry’s efficiency race, where “every fraction of a percent counts”.
Meanwhile, this pioneering technology has brought multiple transformations on the production side. On one hand, it has simplified the process flow and shortened production time, increasing output per unit time by 2.01% and improving the yield by 0.04%, effectively reducing manufacturing costs. On the other hand, by optimizing the film layer design, the utilization of special gases in the front-side coating process has been significantly improved with SiH₄ consumption reduced by 5.03%, NH₃ consumption by 3.28%, and N₂O consumption by 8.88%. This not only cuts raw material costs but also reduces ammonia nitrogen emissions, putting the concept of green production into practice.
It is noteworthy that this technology also significantly enhances cell reliability, especially in terms of resistance to PID and UV degradation, further improving product stability and durability. According to estimates, this technology can generate a technical premium of over 2 million RMB per GW, effectively promoting cost reduction and efficiency improvement for the company’s cell products while ensuring stable supply of high-quality products.
