Foster: The company's packaging solution using a combination of POE film and butyl rubber is particularly suitable for encapsulating components of perovskite solar cells.

Foster replied on the interactive platform on November 18th that, compared to traditional crystalline silicon cells, perovskite cells are more sensitive to moisture, therefore requiring the highest level of water resistance in the packaging solution. The company's packaging solution, which combines POE film and butyl rubber, is particularly suitable for packaging perovskite cell components. The company obtained the world's first TV Rheinland certification for butyl rubber in October of this year.