Amoruso, Salvatore and Ausanio, Giovanni and Bruzzese, Riccardo and Wang, Xuan (2011) Ultrafast Laser Ablation and Deposition of Wide Band Gap Semiconductors. [Pubblicazione in rivista scientifica]

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Item Type: Pubblicazione in rivista scientifica
Title: Ultrafast Laser Ablation and Deposition of Wide Band Gap Semiconductors
Creators:
CreatorsEmail
Amoruso, SalvatoreUNSPECIFIED
Ausanio, GiovanniUNSPECIFIED
Bruzzese, RiccardoUNSPECIFIED
Wang, XuanUNSPECIFIED
Autor/s: Sanz, Mikel; Lopez-Arias, Marien; Marco, Jos F.; de Nalda, Rebeca; Lettieri, Stefano; Castillejo, Marta
Date: 4 February 2011
Number of Pages: 9
Department: Scienze fisiche
Section of the department: Struttura della Materia
Identification Number: DOI:10.1021/jp108489k
Official URL: http://pubs.acs.org/doi/abs/10.1021/jp108489k
Journal or Publication Title: Journal of Physical Chemistry C
Date: 4 February 2011
ISSN: 1932-7447
Volume: 115
Number: 8
Page Range: pp. 3203-3211
Number of Pages: 9
Uncontrolled Keywords: Ultrafast laser ablation and Deposition; Semiconductor Nanoparticles; Nanoparticles-Assembled Films
Identification Number: DOI:10.1021/jp108489k
MIUR S.S.D.: Area 02 - Scienze fisiche > FIS/02 - Fisica teorica, modelli e metodi matematici
Date Deposited: 01 Jul 2011 14:49
Last Modified: 30 Apr 2014 19:46
URI: http://www.fedoa.unina.it/id/eprint/8467

Abstract

Isolated nanoparticles of the wide band gap II−VI semiconductors CdS and ZnS were produced by ultrafast pulsed laser deposition using pulses of ≈300 fs at two wavelengths of 527 and 263 nm. Upon repetitive target irradiation, the isolated nanoparticles assemble to form a nanostructured film whose structural and chemical properties are compared to those of the targets. UV ablation at 263 nm yields nanoparticles of 5 nm average diameter in the case of CdS. At this wavelength the crystalline phase and stoichiometry of the films markedly differ from those of the target. At 527 nm the average size of the nanoparticles is larger, about 13 nm, but the deposits keep the structural and chemical characteristics of the target. For ZnS the size of the nanoparticles is larger than for CdS although their properties also resemble those of the target when they are produced upon irradiation in the visible. The results obtained allow discussion of the interplay between the light absorption step, the plume dynamics, and the film growth and their impact on the structure and nanometer morphology of the deposited material, while at the same time they exemplify the possibility of their control through the choice of the wavelength of the femtosecond pulses.

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