Aluminum oxide (Al 2 O 3), also known as alumina, corundum, sapphire, or ruby, is one of the best insulators used in a wide range of applications: in electronic components, as a support material ...

Scientists in the United Kingdom have used alumina oxide (Al₂O₃) nanoparticles (NPs) as an interfacial modifier at the hole transport layer (HTL) to increase the lifetime of perovskite solar ...