Quantitative analysis of amorphous indium zinc oxide thinfilms synthesized by Combinatorial Pulsed Laser Deposition

Autor: Emanuel Axente, Valentin Craciun, Laurent Mercadier, Gabriel Socol, Catalin Luculescu, Nicu Becherescu, L. M. Trinca, Sid Ahmed Beldjilali, D. Pantelica, Jörg Hermann, Aurelian Catalin Galca, P. Ionescu
Přispěvatelé: Laser Departement (NILPRP), NILPRP, Laboratoire Lasers, Plasmas et Procédés photoniques (LP3), Centre National de la Recherche Scientifique (CNRS)-Aix Marseille Université (AMU), Horia Hulubei National Institute of Physics and Nuclear Engineering (NIPNE), IFIN-HH, Research School of Earth Sciences [Canberra] (RSES), Australian National University (ANU)
Jazyk: angličtina
Rok vydání: 2014
Předmět:
Zdroj: Applied physics. A, Materials science & processing
Applied physics. A, Materials science & processing, Springer Verlag, 2014, ⟨10.1007/s00339-014-8427-y⟩
Applied physics. A, Materials science & processing, Springer Verlag, 2014, 117 (1), pp.229-236. ⟨10.1007/s00339-014-8427-y⟩
ISSN: 0947-8396
1432-0630
Popis: International audience; The use of amorphous and transparent oxides is a key for the development of new thin film transistors and displays. Recently, indium zinc oxide (IZO) was shown to exhibit high transparency in the visible range, low resistivity, and high mobility. Since the properties and the cost of these films depend on the In/(In + Zn) values, the measurement of this ratio is paramount for future developments and applications. We report on accurate analysis of the elemental composition of IZO thin films synthesized using a Combinatorial Pulsed Laser Deposition technique. The monitoring of the thin films elemental composition by Laser-Induced Breakdown Spectroscopy was chosen in view of further in situ and real-time technological developments and process control during IZO fabrication. Our analytical approach is based on plasma modeling, the recorded spectra being then compared to the spectral radiance computed for plasmas in local thermal equilibrium. The cation fractions measured were compared to values obtained by complementary measurements using energy dispersive X-ray spectroscopy and Rutherford backscattering spectrometry. Spectroscopic ellipsometry assisted the scientific discussion. A good agreement between methods was found, independently of the relative fraction of indium and zinc that varied from about 65 to 90 and 35 to 10 at%, respectively, and the measurement uncertainties associated to each analytical method.
Databáze: OpenAIRE
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