Organic-inorganic hybrid halide perovskite solar cells (PSCs) have been a trending topic in recent years. Significant progress has been made to increase their power conversion efficiency (PCE) to more than 20%. However. the poor stability of PSCs in both working and non-working conditions results in rapid degradation through multiple environmental erosions such as water. https://cosmeticssquadets.shop/product-category/astringents/