Perovskite solar cells (PSCs) have attracted worldwide attention due to their high efficiency and low manufacturing cost. As the largest supplier of photovoltaic modules, China has made huge endeavors in the research on PSCs. In 2019, Chinese research groups were still holding the top position for paper publications in the world.
This work was supported by the National Natural Science Foundation of China (11574199, 11674219). Correspondence to Liyuan Han. Wang, Y., Han, L. Research activities on perovskite solar cells in China. Sci.
China is already the leader of the global silicon photovoltaic industry, and looks set to dominate the perovskite solar industry too: Chinese entities currently hold a total of 2,282 or 68% of all perovskite battery patents, far more than the around 300 patents held in total by the U.S., Japan, and South Korea.
The efficiency of silicon solar cells is now reaching a ceiling, but China is developing perovskite solar cells that are cheap to produce and can convert more sunlight into electricity. On Monday, we reported that CATL 宁德时代, China’s biggest battery maker, announced that it had registered a patent for a perovskite solar cell.
At present, the power conversion efficiency (PCE) of perovskite solar cells (PSCs) has exceeded 25%, surpassing the record of copper indium gallium selenium (CIGS) solar cells and approaching that of silicon (Si) solar cells , , , .
CATL’s patent includes the cell’s manufacturing method and related electrical equipment. In fact, China’s perovskite solar cell industry is already quite advanced.