Triggering surface ferroelectric order in Pb(Zr,Ti)O3(001) by deposition of platinum

Bucur, Cristina; Tănase, Liviu Cristian; Abramiuc, Laura Elena; Lungu, George A.; Chirilă, Cristina; Trupina, L.; Apostol, Nicoleta G.; Costescu, Ruxandra M.; Negrea, Raluca; Pintilie, L.; Teodorescu, Cristian M.

doi:10.1016/j.apsusc.2017.04.238

Cited by 9 publications

(4 citation statements)

References 23 publications

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“…Imaging and spectral data processing have been made using specialized routines under Gatan Digital Micrograph. The cross-sectional TEM specimens have been prepared as described in Bucur el al . The electrical and polar measurements were done after depositing circular gold (Au) electrodes with a diameter of 1 mm each on the upper surface of the sample.…”

Section: Methodsmentioning

confidence: 99%

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: Methodsmentioning

confidence: 99%

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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“…We remind that Atlas-Silvaco is a semiconductor device simulator, which is based on Poisson's equation, the continuity equation, and the transport equation for electrons and holes. [33] In all our simulations, we consider the temperature T = 300 K and the wavelength of the monochro- Platinum (Pt) has a work function of 5.7 eV [34] and zinc oxide (ZnO) has an electronic affinity of 2.088 eV, [35] hence, Several cell dimensions (ZnO and BTO layer thickness, cell width) are compared in order to optimize the efficiency.…”

Section: Ferroelectric Solar Cellmentioning

confidence: 99%

New design of ferroelectric solar cell combined with luminescent solar concentrator*

2019

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A new transparent photovoltaic panel composed of a luminescent solar concentrator and Al/BaTiO3/ZnO/Pt ferroelectric solar cells is presented, in which a portion of the incoming solar illumination is converted by the fluorophores to ultraviolet (UV) light which is then absorbed by ZnO. Firstly, the solar cells are simulated using Atlas–Silvaco. Then, the panel is modelled based on the obtained solar cell characteristics. This panel would be of great importance for building integrated photovoltaics domain because of its high transparency.

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“…Stable ferroelectric phases in nanometer-thick films are of great interest for ultra-high density and ferroelectric field effect transistors (FeFETs), thus, the properties of ferroelectrics in ultrathin films has been under intense theoretical and experimental investigation [1][2][3][4][5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

“…PZT has found a wide range of applications in piezoelectric sensors, actuators, and non-volatile memories, where the interface between the metal electrode and a functional oxide plays an important role in the performance of the device [5][6][7][8][9][10][13][14][15], For thin PZT films, in particular, the cycling stability, the imprint performance and the leakage current strongly depend on the interfaces between electrode material and ferroelectric film [6,[14][15][16].…”

Section: Introductionmentioning

confidence: 99%

Interfacial phenomena in nanocapacitors with multifunctional oxides

Kimmel

2019

Phys. Chem. Chem. Phys.

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The analysis of the structure, chemical stability, electronic and ferroelectric properties of the interfaces between Pt(001) and PbZrTiO 3 (001) have been performed with ab initio methods. We show that the chemical environment plays a critical role in determining the interfacial reconstruction and charge redistribution at the metal/oxide interfaces. We demonstrate that the difference in interfacial bonds formed at the Pt/PZT interfaces with (TiZr)O 2 -and PbO-termination of PZT essentially defines the effectiveness of the screening, and ease of polarisation switching in PZT-based capacitors. The imperfect screening in Pt/PZT BO 2 /Pt capacitors is caused by strong interfacial bonds formed at the Pt/PZT BO 2 interface that is accompanied by the suppressed polarisation of PZT film. In contrast, the capacitors with PbO-terminated PZT show a negligible depolarising field, and high polarisation, which is the consequence of weak bonds formed at the Pt/PZT interfaces. The latter also causes a higher switching barrier than that in the former system.

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Triggering surface ferroelectric order in Pb(Zr,Ti)O3(001) by deposition of platinum

Cited by 9 publications

References 23 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

New design of ferroelectric solar cell combined with luminescent solar concentrator*

Interfacial phenomena in nanocapacitors with multifunctional oxides

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Triggering surface ferroelectric order in Pb(Zr,Ti)O3(001) by deposition of platinum

Cited by 9 publications

References 23 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

New design of ferroelectric solar cell combined with luminescent solar concentrator*

Interfacial phenomena in nanocapacitors with multifunctional oxides

Contact Info

Product

Resources

About

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