Effect of symmetry of substrate surfaces on the orientation and growth mode of ZnO films

Wei, Xianhua; Jie, Wenjing; Huang, Wen; Zhu, Jun; Li, Y.R.

doi:10.1016/j.jcrysgro.2009.02.021

Cited by 5 publications

(4 citation statements)

References 16 publications

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“…This result is consistent with the previous reports in which ZnO also exhibited a (00 l ) texture on the perovskite substrates, such as BTO and PZT. , The X-ray rocking curve of the (002) ZnO (15 nm) peak was recorded and is shown in Figure c. The full width at half-maximum was found to be 1.46°, which is similar to that observed in other ferroelectric–semiconductor bilayers, such as PZT/ZnO and BaTiO 3 /ZnO. , …”

Section: Results and Discussionsupporting

confidence: 91%

“…The full width at halfmaximum was found to be 1.46°, which is similar to that observed in other ferroelectric−semiconductor bilayers, such as PZT/ZnO and BaTiO 3 /ZnO. 11,27 The structural quality of the Nb:STO/BCZT (180 nm)/ ZnO (15 nm) structure has been also investigated by TEM. As shown by the TEM image at a low magnification in Figure 5a, the thicknesses of the BCZT and ZnO layers were confirmed to be 180 and 15 nm, respectively.…”

Section: Resultssupporting

confidence: 77%

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Hysteretic Characteristics of Pulsed Laser Deposited 0.5Ba(Zr_0.2Ti_0.8)O₃–0.5(Ba_0.7Ca_0.3)TiO₃/ZnO Bilayers

Silva

Wang

Koster

et al. 2018

ACS Appl. Mater. Interfaces

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In the present work, we study the hysteretic behavior in the electric-field-dependent capacitance and the current characteristics of 0.5Ba(ZrTi)O-0.5(BaCa)TiO (BCZT)/ZnO bilayers deposited on 0.7 wt % Nb-doped (001)-SrTiO (Nb:STO) substrates in a metal-ferroelectric-semiconductor (MFS) configuration. The X-ray diffraction measurements show that the BCZT and ZnO layers are highly oriented along the c-axis and have a single perovskite and wurtzite phases, respectively, whereas high-resolution transmission electron microscopy revealed very sharp Nb:STO/BCZT/ZnO interfaces. The capacitance-electric field ( C- E) characteristics of the bilayers exhibit a memory window of 47 kV/cm and a capacitance decrease of 22%, at a negative bias. The later result is explained by the formation of a depletion region in the ZnO layer. Moreover, an unusual resistive switching (RS) behavior is observed in the BCZT films, where the RS ratio can be 500 times enhanced in the BCZT/ZnO bilayers. The RS enhancement can be understood by the barrier potential profile modulation at the depletion region, in the BCZT/ZnO junction, via ferroelectric polarization switching of the BCZT layer. This work builds a bridge between the hysteretic behavior observed either in the C- E and current-electric field characteristics on a MFS structure.

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Section: Results and Discussionsupporting

confidence: 91%

Section: Resultssupporting

confidence: 77%

Hysteretic Characteristics of Pulsed Laser Deposited 0.5Ba(Zr_0.2Ti_0.8)O₃–0.5(Ba_0.7Ca_0.3)TiO₃/ZnO Bilayers

Silva

Wang

Koster

et al. 2018

ACS Appl. Mater. Interfaces

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“…Most reports are on (dominantly) ZnO (001) [18][19][20][21] or ZnO (110) 17,20,22-26 textures on perovskite substrates. Kato et al 26 reports on the same ZnO/PZT/SRO/STO(001) heterostructure deposited by PLD, obtaining single (110) texture for a 30 nm thick ZnO film.…”

Section: Results and Disscusionmentioning

confidence: 99%

The impact of the Pb(Zr,Ti)O3-ZnO interface quality on the hysteretic properties of a metal-ferroelectric-semiconductor structure

Pintilie

Pasuk

Ibanescu

et al. 2012

Journal of Applied Physics

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Articles you may be interested inThe effect of the top electrode interface on the hysteretic behavior of epitaxial ferroelectric Pb(Zr,Ti)O3 thin films with bottom SrRuO3 electrode J. Appl. Phys. 112, 064116 (2012); 10.1063/1.4754318 Temperature induced change in the hysteretic behavior of the capacitance-voltage characteristics of Pt -ZnO -Pb ( Zr 0.2 Ti 0.8 ) O 3 -Pt heterostructures Appl. Phys. Lett. 96, 012903 (2010); 10.1063/1.3284659 Off-centered polarization and ferroelectric phase transition in Li-doped ZnO thin films grown by pulsed-laser ablation Growth, microstructure, and ferroelectric properties of Pb ( Zr 0.4 Ti 0.6 ) O 3 ∕ Pb Zr O 3 superlattices prepared on Sr Ti O 3 (100) substrates by pulsed laser depositionThe hysteretic properties of metal-ferroelectric-semiconductor (MFS) structures based on Pb(Zr 0.2 Ti 0.8 )O 3 (PZT) and ZnO films were studied with respect of the quality of the PZT-ZnO interface. The films were grown by pulsed laser deposition (PLD) on platinized silicon (Pt/Si) substrate and on single crystal, (001) oriented SrTiO 3 (STO) substrates. The structural analysis has revealed that the PZT-ZnO stack grown on single crystal STO is epitaxial, while the structure grown on Pt/Si has columnar texture. The temperature change of the capacitance-voltage (C-V) hysteresis direction, from clockwise at low temperatures to counter clockwise at high temperatures, was observed at around 300 K in the case of the MFS structure grown by PLD on Pt/Si substrate. This temperature is lower than the one reported for the case of the PZT-ZnO structure grown by sol-gel on Pt/Si substrate (Pintilie et al., Appl. Phys. Lett. 96, 012903 (2010)). In the fully epitaxial structures the C-V hysteresis is counter clockwise even at 100 K. These findings strongly points out that the quality of the PZT-ZnO interface is essential for having a C-V hysteresis of ferroelectric nature, with negligible influence from the part of the interface states and with a memory window of about 5 V at room temperature. V C 2012 American Institute of Physics. [http://dx.

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“…The performance of ZnO nanoparticles in these applications is highly dependent on their shape, aspect ratio, surface cleanliness, and particle alignment. Also, orientation and interface quality affect the piezoelectric polarization, optical properties and charge carrier transportation properties of ZnO films [13,15]. The substrates coated with well-aligned ZnO nanorods or nanowires may exhibit much larger surface area than that of ZnO films prepared from randomly oriented nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Growth of highly aligned ZnO nanorod arrays on zinc plates: Morphological and structural characterization

İkizler,

Peker

2023

Res. Eng. Struct. Mat.

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In this work, uniform and highly aligned ZnO nanorod arrays were simply synthesized on zinc plates by hydrothermal method using zinc–ammonia complex solution. Effects of ZnO seed layer formation, Zn(NO3)2 concentration and NH3/Zn(NO3)2 mole ratio (R) in the reaction medium on the morphology and crystal structure of nanorods were investigated in detail. ZnO nanorods grown on zinc surfaces were highly crystalline and had a hexagonal wurtzite structure, as revealed by XRD analysis. In addition, the dominant crystal growth direction was in c-axis, indicating the verticality of the nanorods. SEM images showed that one-dimensional (1D) ZnO nanorods with high verticality and number density were synthesized on seeded plates whereas randomly oriented arrays were grown on non-seeded surfaces. Increase in the Zn2+ concentration changed the top ends of the rods from tapering to hexagonal ends; and also led to an increase in the average size and verticality of the nanorods. The increase in R value (or i.e., amount of NH3) caused the rods to misalign on the surface and decrease in size. The size of well-aligned nanorods can be adjusted from 50 to 260 nm in diameter and 0.11 to 6 m in length by changing the reaction parameters, implying their large potential to be used in photocatalytic and also in electronic applications.

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Effect of symmetry of substrate surfaces on the orientation and growth mode of ZnO films

Cited by 5 publications

References 16 publications

Hysteretic Characteristics of Pulsed Laser Deposited 0.5Ba(Zr_0.2Ti_0.8)O₃–0.5(Ba_0.7Ca_0.3)TiO₃/ZnO Bilayers

Hysteretic Characteristics of Pulsed Laser Deposited 0.5Ba(Zr_0.2Ti_0.8)O₃–0.5(Ba_0.7Ca_0.3)TiO₃/ZnO Bilayers

The impact of the Pb(Zr,Ti)O3-ZnO interface quality on the hysteretic properties of a metal-ferroelectric-semiconductor structure

Growth of highly aligned ZnO nanorod arrays on zinc plates: Morphological and structural characterization

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Effect of symmetry of substrate surfaces on the orientation and growth mode of ZnO films

Cited by 5 publications

References 16 publications

Hysteretic Characteristics of Pulsed Laser Deposited 0.5Ba(Zr0.2Ti0.8)O3–0.5(Ba0.7Ca0.3)TiO3/ZnO Bilayers

Hysteretic Characteristics of Pulsed Laser Deposited 0.5Ba(Zr0.2Ti0.8)O3–0.5(Ba0.7Ca0.3)TiO3/ZnO Bilayers

The impact of the Pb(Zr,Ti)O3-ZnO interface quality on the hysteretic properties of a metal-ferroelectric-semiconductor structure

Growth of highly aligned ZnO nanorod arrays on zinc plates: Morphological and structural characterization

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Hysteretic Characteristics of Pulsed Laser Deposited 0.5Ba(Zr_0.2Ti_0.8)O₃–0.5(Ba_0.7Ca_0.3)TiO₃/ZnO Bilayers

Hysteretic Characteristics of Pulsed Laser Deposited 0.5Ba(Zr_0.2Ti_0.8)O₃–0.5(Ba_0.7Ca_0.3)TiO₃/ZnO Bilayers