Effects of thermal annealing on the structural and electronic properties of rare earth-implanted MoO3 nanoplates. Issue 17 (10th April 2017)

• Record Type: Journal Article
• Authors: Vila, M.; Díaz-Guerra, C.; Lorenz, K.; Piqueras, J.; Píš, I.; Magnano, E.; Munuera, C.; Alves, E.; García-Hernández, M.
• Is Part Of: CrystEngComm. Volume 19:Issue 17(2017)
• Page Start: 2339
• Page End: 2348
• Publication Date: 2017-04-10
• Subjects: Crystals -- Periodicals; Crystal growth -- Periodicals; Crystallography -- Periodicals; Cristaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Cristallographie -- Périodiques; 548
• DOI: 10.1039/c7ce00242d
• Languages: English
• ISSNs: 1466-8033

Abstract

Abstract : The compositional, structural and morphological recovery of α-MoO3 nanoplates implanted with Eu and Er ions has been assessed as a function of post-implantation thermal treatments. Abstract : The compositional, structural and morphological recovery of α-MoO3 nanoplates implanted with Eu and Er ions has been assessed as a function of post-implantation thermal treatments. Rapid thermal annealing induces the formation of phases different from α-MoO3 and seems to be unable to recover the original oxygen content of the nanostructures. In contrast, conventional annealing in air at 450 °C for 4 hours fully recovers the original molybdenum trioxide structure and leads to an effective optical activation of both Er and Eu ions. Synchrotron-based X-ray photoelectron spectroscopy and X-ray absorption studies confirm the incorporation of the rare earth ions into their trivalent charge state and reveal the modification of the original valence band structure of the nanoplates.