Tunable emission in ferromagnetic CdS:Dy3+ nanostructures for optoelectronic and spintronic applications

The incorporation of 3d magnetic ions into intrinsic semiconductors is one of the sophisticated way to tune their opto-magnetic behavior but dire need is to determine the functional changes resulting from doped-ions. Here, dysprosium (Dy) ions have been doped into CdS nanostructures via co-precipitation technique and studied their influence in optical and magnetic properties. The PL of doped-nanostructures exhibited violet, blue (454.5 nm) and orange emissions, simultaneously. The violet emissions correspond to the band edge (BE) emission of CdS and blue emissions appeared due to the f-f transition from Dy4+ to Dy3+ and Dy3+. Burstein-Moss-Effect explains the increased band-gap observed in the doped samples. VSM studies show the formation of ferromagnetism in a diamagnetic CdS nanostructure due to the successful incorporation of Dy3+ ions into CdS which can play a significant role in tuning their optical and magnetic properties for potential applications in optical devices and spintronics.

Automated summary

The successful incorporation of dysprosium ions into CdS nanostructures resulted in the formation of ferromagnetism, which can tune the optical and magnetic properties for potential applications in optical devices and spintronics.