In the context of the dual-carbon era, photovoltaics, as the main force in carbon neutrality, has attracted much attention from various industries. In recent years, as P-type PERC cells have gradually approached the theoretical efficiency development limit, the photovoltaic industry has ushered in a new iteration cycle of new and old technologies. N-type TOPCon cells have become a new technology route that the industry focuses on and is hotly discussed due to its higher conversion efficiency. At the same time, the continuous technological breakthroughs of enterprises in the field have pushed the industry to open a new era of N-type applications. Whether in the past, present or future, photovoltaic technology must develop to become more efficient, cheaper and more reliable. It is a constant and indispensable logic and principle.
Since the development of the industry, the crystalline silicon technology route has shown the characteristics of a hundred flowers blooming. However, judging from the current mainstream TOPCon and heterojunction, the corresponding physical logic behind them is the same, that is, they are all passivated contacts. In the future, several technological developments will have reference , integration, but also differences. In addition, from the perspective of industry development trends, the future will definitely belong to TOPCon, and the market space is much larger than that of several other technologies. In the future, the industry will make concerted efforts to break through the double-sided TOPCon technology, and implement the application of oxide film technology on the TOPCon technology platform. The future development space of TOPCon is quite promising.
At present, TOPCon technology is only used for one side. There are still many scientific questions to be answered about whether the double-sided technology will bring the theoretical efficiency to 28.7%, or whether it can reach it faster and promote the industry to achieve advanced development. solve. However, I believe that with friends from the business community and scientists, the application of more innovative technologies at TOPCon will definitely be accelerated.
Throughout the development path of the photovoltaic industry, technological innovation has always been the key driver for the upgrading and development of the industry. In this era where technology is king, N-type TOPCon technology is becoming a key layout direction in the market with its series of excellent features such as low attenuation, low power temperature coefficient, high efficiency, and high bifacial ratio. In turn, how to further promote N-type technology to reduce costs and increase efficiency has become a hot topic in the industry.
N-type TOPCon has the two major advantages of "high conversion efficiency, low-cost industrialization and production equipment support", and TOPCon technology is firmly chosen as the main layout direction. And through production optimization and material optimization, next-generation technology reserves will be simultaneously carried out, and new technologies will be combined to achieve upgrades. In the next three years or so, a mass production conversion efficiency of 27%-27.5% will be achieved.
In addition to reducing costs through innovative technologies by improving mass production efficiency, improving technology is the only way to reduce costs and increase efficiency. At present, perovskite and crystalline silicon stacks have achieved an efficiency of 33.7%. Industry experts are very optimistic about the lamination application of N-type TOPCon and perovskite, which is the future mainstream technology route. With the support of existing equipment, it is expected to further reduce component costs. Regarding the development of TOPCon and perovskite stacking technology, the further improvement of TOPCon cell voltage, the upgrade of passivation contacts, the improvement of voltage contribution, the optimization of perovskite stability and large-area uniformity, and the crystallization of TOPCon sub-cells Control is the direction of the industry's future efforts.
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