Chalcogenide has many excellent photovoltaic properties, such as adjustable band gap, high absorption coefficient, low exciton binding energy, high carrier mobility, high defect tolerance, etc.; and chalcogenide preparation process is simple to realize semi-transparent, ultra-lightweight, ultrathin, and flexible. The key is that chalcogenide raw materials are widely available and abundant.
Chalcogenide solar cells are solar cells that utilize chalcogenide-type organic metal halide semiconductors as light-absorbing materials. As a third-generation photovoltaic technology with great development potential, chalcogenide photovoltaic cells have high energy conversion efficiency, low cost, lightweight and flexible advantages, its theoretical limit conversion efficiency is higher than that of crystalline silicon batteries and thin film batteries, the preparation cost is lower, chalcogenide's conversion efficiency and cost advantage is obvious, it is currently the most promising industrialization of the new thin film solar cells.
At the technical level, the lightweight and flexible characteristics of the chalcogenide battery as well as its theoretical higher photoelectric conversion efficiency compared to crystalline silicon solar cells and other characteristics, making chalcogenide battery technology has become the photovoltaic industry on its high hopes for the direction of technological development. However, the durability of chalcogenide is still a major obstacle to commercialization - silicon solar panels can still maintain 25% power output after 25 years of use, but chalcogenide cells decline rapidly. Once calcitonite's lifespan exceeds 10 years, combined with its low manufacturing costs, it can replace silicon-based solar cells at many large utility sites.
At the policy level, the photovoltaic industry is a strategic emerging industry that is strongly supported by China and receives key support from the national industrial policy. In recent years, under the top-level design guidelines of carbon peak and carbon neutral, various supportive policies for the PV industry have been frequently launched to promote the growth and development of the PV industry. Since 2020, calcite-related policies have been increasing, and relevant policies have been issued at the national level to promote the development of the calcite solar cell industry. Several regions have also paid attention to the industry, and provinces such as Jiangsu Province and Guangdong Province have paid more attention to the thin-film solar cell industry, providing policy support for the development of the industry. Some regions are also forming the aggregation effect of the chalcogenide solar cell industry, such as Qingdao is working with the central research institute of Guodian Investment, to accelerate the creation of chalcogenide stacked battery preparation and small pilot production line, and the establishment of the chalcogenide photovoltaic technology innovation center.
At present, chalcogenide thin film solar cell industry is accelerating, a large number of outstanding enterprises have started GW production line construction, according to the Orient Fortune Securities Research Institute predicted that the chalcogenide new production capacity of 4.22GW in 2024, 2030 will reach 197GW, the future development of a broad space.
Calcium titanium ore battery industry with the continued promotion of technological innovation, the further improvement of the industrial chain and the continued growth of market demand, is expected to drive the development of supporting laser equipment industry.
