Abstract
Yttrium-doped ZnO nanoparticles (Zn1−xYxO, x=0, 0.03, 0.05) were synthesized by sol–gel technique. The effects of yttrium doping concentration on the structures, morphologies and optical properties of as-synthesized Zn1−xYxO nanoparticles were investigated in detail. The results from structural characterizations clearly demonstrated that yttrium ions were successfully doped into the crystal lattice of ZnO matrix. Besides a UV emission centered at ∼383nm, the PL spectra of all the samples exhibited a broad deep-level emission, which can be deconvoluted into two Gauss peaks centered at 539nm (P1) and 598nm (P2), respectively. As the concentration of Y doping increased from 0% to 5%, the peak position with maximum intensity in deep-level emission band was gradually tuned from 539nm to 598nm and the relative intensity ratio of IP1/IP2 also decreased step by step, which revealed a unique optical property of yttrium-doped ZnO nanoparticles.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call