Mn-Doped Semiconductor Nanocrystals: 25 Years and Beyond

Abstract

Doping Mn(II) in high bandgap semiconductor hosts is widely known for its yellow-orange emission, typically centered within 580–600 nm. The unique feature of this emission that identifies its origin from Mn(II) is its longer excited-state decay lifetime. As an optically active dopant in nanocrystalline materials, it has been studied for 25 years and achieved several milestones. The doping was first performed with different chalcogenide materials, and it has also been extended to recently emerged perovskite nanocrystals. Analyzing the entire journey of this Mn(II) dopant in different nanocrystal hosts, this Viewpoint provides several achievements obtained, from fundamentals to applied research, and also quotes important findings of some of the leading researchers.