BYD’s major advances in the field of solar cells include the application of a number of perovskite solar cell patents, which are mainly focused on improving device performance, photoelectric conversion efficiency and reducing battery molding costs.
Patent content and technical details：
Patent name : The patents applied by BYD include “a perovskite solar cell and a manufacturing method thereof and a solar cell module” (publication No. CN 118829246A) and “Perovskite solar cell and a manufacturing method thereof and a photovoltaic module” (publication No. CN 118829245A).
Technical details :
Patent 1 : The patent relates to a perovskite solar cell, including a hole transport layer, an interfacial deimpurity layer and a perovskite layer. The interface dehybridizing layer contains organic hydrohalate, which solves the problem of incomplete conversion of lead iodide to perovskite at the buried interface, improves the energy level matching between the hole transport layer and perovskite interface, and improves the device performance .
Patent 2 : The patent relates to perovskite solar cells, including perovskite layers, which are composed of large and small grains. The particle size of large grains is 0.8-2.0μm, accounting for 75-85% of the total perovskite grains, and the particle size of small grains is less than 0.8μm, accounting for 15-25% of the total. This structure improves the photoelectric conversion efficiency .
Patent 3 : The patent relates to a method for making a perovskite solar cell and a photovoltaic module, including a first substrate, a functional layer and a second substrate. The functional layer includes a transparent conductive layer, a transport layer and a perovskite absorbent layer. The battery is provided with a cutting slot, which divides the battery into multiple units and is connected through the conductive part, which reduces the cutting times and reduces the cost .
Byd’s investment and research and development in solar technology：
Byd has invested heavily in solar technology, especially in the development of perovskite solar cells. By applying for a number of patents, the company is committed to improving the efficiency and reducing the cost of solar cells, demonstrating its strong research and development capabilities in solar technology .
Conclusion：
BYD’s technological innovation in the field of solar cells is mainly focused on the preparation method and performance improvement of perovskite solar cells, which improves the photoelectric conversion efficiency and reduces the production cost by optimizing the structure and materials.
