Sadly, oxygen chemically reacts with boron when exposed to sunlight, which leads to minor defects inside the silicon mobile and lowers power generation with time. One solution to this problem is to use an element besides boron that won't bond towards the oxygen impurities. Thanked 50 Occasions in 35 Posts https://solarpanelinstallation73544.dm-blog.com/35442617/facts-about-garden-sofa-revealed