Substrate–target distance dependence of structural and optical properties in case of Pb(Zr,Ti)O3 films obtained by pulsed laser deposition

Gâlcă, A.C.; Stancu, V.; Husanu, Marius-Adrian; Drǎgoi, C.; Gheorghe, Nicoleta; Trupina, L.; Enculescu, Monica; Vasile, Eugeniu

doi:10.1016/j.apsusc.2011.01.056

Cited by 37 publications

(21 citation statements)

References 22 publications

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“…At first sight it is therefore surprising that a Zr rich surface oxide shows a distinct core level binding energy with respect to that of Zr in PZT. However, the XPS data in the literature shows that the Zr binding energy is (181.4 ±0.1) eV in PZT [10,24,35,32,36,37,38,39,40,41,42,43,44,45,46] and (182.4 ±0.3) eV in ZrO 2 [47,48,49,50,51,52,53,54,55,56], in excellent agreement with the 1 eV shift measured here. Beyond the immediate chemical environment of the Zr emitter, two other effects may influence the BE shift.…”

Section: Discussionsupporting

confidence: 90%

Chemistry of surface nanostructures in lead precursor-rich PbZr0.52Ti0.48O3 sol–gel films

Gueye

Rhun

Gergaud

et al. 2016

Applied Surface Science

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We present a study of the chemistry of the nanostructured phase at the surface of lead zirconium titanate PbZr 0.52 Ti 0.48 O 3 (PZT) films synthesized by sol-gel method. In sol-gel synthesis, excess lead precursor is used to maintain the target stoichiometry. Surface nanostructures appear at 10% excess lead precursor whereas 30% excess precursor inhibits their formation. Using the surface-sensitive, quantitative X-ray photoelectron spectroscopy and glancing angle X-ray diffraction we have shown that the chemical composition of the nanostructures is ZrO 1.82−1.89 rather than pyrochlore often described in the literature. The presence of a possibly discontinuous layer of wide band gap ZrO 1.82−1.89 could be of importance in determining the electrical properties of PZT-based metal-insulator-metal heterostructures.

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Section: Discussionsupporting

confidence: 90%

Chemistry of surface nanostructures in lead precursor-rich PbZr0.52Ti0.48O3 sol–gel films

Gueye

Rhun

Gergaud

et al. 2016

Applied Surface Science

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“…It is also noted that the spectral peaks of the associated elements of the PLZT became more intense after sputtering the film surface with Ar + ion, as is evident in the XPS spectra. The reported BE and ΔE(Pb) values for Pb in single, highest oxidation state are in close agreement with the values reported in the literature for PZT [26,27] and PLZT [28][29][30].…”

Section: X-ray Photoelectron Spectroscopysupporting

confidence: 90%

Annealing-induced changes in chemical bonding and surface characteristics of chemical solution deposited Pb0.95La0.05Zr0.54Ti0.46O3 thin films

Batra

Ramana

Kotru

2016

Applied Surface Science

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We report the effect of post deposition annealing temperature (T a = 550 and 750 o C) on the surface morphology, chemical bonding and structural development of Lanthanum doped lead zirconate titanate (Pb 0.95 La 0.05 Zr 0.54 Ti 0.46 O 3 ; referred to PLZT) thin films prepared using chemical solution deposition method. Atomic force microscopy demonstrates formation of nanocrystallites in the film annealed at T a =750 o C. X-ray photoelectron spectroscopy (XPS) analyses indicate that the binding energies (BE) of the Pb 4f , Zr 3d, and Ti 2p doublet experience a positive energy shift at T a = 750 o C, whereas the BE of O 1s and La 3d doublet show negative shift with respect to the BE of the films annealed at T a =550 o C. Thermal induced crystallization and chemical modification is evident from XPS results. The Ar+ sputtering of the films reveal change in oxidation state and chemical bonding between the constituent atoms, with respect to T a. Raman spectroscopy used to study phonon-light interactions show the shift in longitudinal and transverse optical modes with the change in T a , confirming the change in phase and crystallinity of these films. The results suggest annealing at T a = 750 o C yield crystalline perovskite PLZT films, which is essential to obtain photovoltaic response from devices based on such films.

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“…There is a complex and strong interplay between the application‐oriented properties (piezoelectric coefficient, dielectric constant, and fatigue behavior) and the composition and/or electronic properties of these films 2. Among the methods used to produce epitaxial PZT thin layers, pulsed laser deposition (PLD) is recognized as one of the most appropriate one, since many parameters may be adjusted to control the deposition 3, 4. The surface composition is a crucial parameter for any application involving deposition of metals on dielectrics for contacts.…”

Section: Introductionmentioning

confidence: 99%

X‐ray photoelectron spectroscopy of pulsed laser deposited Pb(Zr,Ti)O_3−δ

Drǎgoi

Gheorghe

Lungu

et al. 2012

Physica Status Solidi (a)

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High quality pulsed laser deposited lead zirconate titanate (PZT) films are obtained by pulsed laser deposition on SrRuO 3 (111) single crystal layers and characterized by X-ray photoelectron spectroscopy (XPS), to determine the surface composition. It is found that a minor amount of Pb forms PbO 2 at the surface and also some Pb is included into the contamination layer, in form of a Pb(CO 3 ) 2 layer of about 1 nm thickness, occupying about one quarter of the PZT surface. The stoichiometry of the outermost 4-5 nm layers yielded as PbZr 0.25 Ti 0.80 O 2.5 , which suggest the formation of an oxygen depleted, Brownmillerite-like layer at the surface, of at least 5 nm thickness.

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Substrate–target distance dependence of structural and optical properties in case of Pb(Zr,Ti)O3 films obtained by pulsed laser deposition

Cited by 37 publications

References 22 publications

Chemistry of surface nanostructures in lead precursor-rich PbZr0.52Ti0.48O3 sol–gel films

Chemistry of surface nanostructures in lead precursor-rich PbZr0.52Ti0.48O3 sol–gel films

Annealing-induced changes in chemical bonding and surface characteristics of chemical solution deposited Pb0.95La0.05Zr0.54Ti0.46O3 thin films

X‐ray photoelectron spectroscopy of pulsed laser deposited Pb(Zr,Ti)O_3−δ

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Substrate–target distance dependence of structural and optical properties in case of Pb(Zr,Ti)O3 films obtained by pulsed laser deposition

Cited by 37 publications

References 22 publications

Chemistry of surface nanostructures in lead precursor-rich PbZr0.52Ti0.48O3 sol–gel films

Chemistry of surface nanostructures in lead precursor-rich PbZr0.52Ti0.48O3 sol–gel films

Annealing-induced changes in chemical bonding and surface characteristics of chemical solution deposited Pb0.95La0.05Zr0.54Ti0.46O3 thin films

X‐ray photoelectron spectroscopy of pulsed laser deposited Pb(Zr,Ti)O3−δ

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X‐ray photoelectron spectroscopy of pulsed laser deposited Pb(Zr,Ti)O_3−δ