Synthesis and properties of multifunctional Si–LiNbO3 heterostructures for non-volatile memory units

Sumets, M.; Иевлев, В. М.; Dybov, V.; Kostyuchenko, А. V.; Serikov, D. V.; Канныкин, С. В.; Belonogov, E. K.

doi:10.1007/s10854-019-02033-1

Cited by 8 publications

(6 citation statements)

References 47 publications

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“…The amorphous network produced by other methods, e.g., by sputter-deposition, may also enhance electronic conductivity. Indeed, a recent investigation on the transport properties of magnetron sputter-deposited Li-Nb-O films onto silicon wafers found that (i) the films are amorphous [99,100], (ii) ferroelectricity is present [99], and (iii) the conductivity is governed by the electrons [100]. This is consistent with the secondary ion mass spectrometry (SIMS) experiments performed in our laboratory with O 2 + primary ion beams on crystalline and amorphous LiNbO 3 .…”

Section: Lithium Niobate For Fast Cycling In Libssupporting

confidence: 83%

“…The microwave-induced auto-combustion synthesis of 3D macroporous crystalline LiNbO 3 hybrids was shown to deliver a higher capacity than commercial Li 4 Ti 5 O 12 anodes [53] because Li + and electron transport in such textured LiNbO 3 materials is expected to be enhanced [53]. The utilization of an amorphous or nanocrystalline instead of a single crystalline network may enhance conductivity [46,47,79,[95][96][97][98][99][100]. The work of Glass et al [79] was the first work that showed a huge increase in the ionic conductivity in LiNbO 3 glass compared to LiNbO 3 crystal.…”

Section: Lithium Niobate For Fast Cycling In Libsmentioning

confidence: 99%

“…On the other hand, the overpotential increase may be connected to changes in the ferroelectric domains during the cycling of the LiNbO 3 films. It is interesting that ferroelectricity was observed in sputter-deposited amorphous LiNbO 3 films [99]. It remains a challenge to investigate in situ and operando the ferroelectricity during electrode cycling.…”

Section: Remarks Open Questions and Outlookmentioning

confidence: 99%

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Lithium Niobate for Fast Cycling in Li-ion Batteries: Review and New Experimental Results

et al. 2023

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Li-Nb-O-based insertion layers between electrodes and electrolytes of Li-ion batteries (LIBs) are known to protect the electrodes and electrolytes from unwanted reactions and to enhance Li transport across interfaces. An improved operation of LIBs, including all-solid-state LIBs, is reached with Li-Nb-O-based insertion layers. This work reviews the suitability of polymorphic Li-Nb-O-based compounds (e.g., crystalline, amorphous, and mesoporous bulk materials and films produced by various methodologies) for LIB operation. The literature survey on the benefits of niobium-oxide-based materials for LIBs, and additional experimental results obtained from neutron scattering and electrochemical experiments on amorphous LiNbO3 films are the focus of the present work. Neutron reflectometry reveals a higher porosity in ion-beam sputtered amorphous LiNbO3 films (22% free volume) than in other metal oxide films such as amorphous LiAlO2 (8% free volume). The higher porosity explains the higher Li diffusivity reported in the literature for amorphous LiNbO3 films compared to other similar Li-metal oxides. The higher porosity is interpreted to be the reason for the better suitability of LiNbO3 compared to other metal oxides for improved LIB operation. New results are presented on gravimetric and volumetric capacity, potential-resolved Li+ uptake and release, pseudo-capacitive fractions, and Li diffusivities determined electrochemically during long-term cycling of LiNbO3 film electrodes with thicknesses between 14 and 150 nm. The films allow long-term cycling even for fast cycling with rates of 240C possessing reversible capacities as high as 600 mAhg−1. Electrochemical impedance spectroscopy (EIS) shows that the film atomic network is stable during cycling. The Li diffusivity estimated from the rate capability experiments is considerably lower than that obtained by EIS but coincides with that from secondary ion mass spectrometry. The mostly pseudo-capacitive behavior of the LiNbO3 films explains their ability of fast cycling. The results anticipate that amorphous LiNbO3 layers also contribute to the capacity of positive (LiNixMnyCozO2, NMC) and negative LIB electrode materials such as carbon and silicon. As an outlook, in addition to surface-engineering, the bulk-engineering of LIB electrodes may be possible with amorphous and porous LiNbO3 for fast cycling with high reversible capacity.

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Section: Lithium Niobate For Fast Cycling In Libssupporting

confidence: 83%

Section: Lithium Niobate For Fast Cycling In Libsmentioning

confidence: 99%

Section: Remarks Open Questions and Outlookmentioning

confidence: 99%

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Lithium Niobate for Fast Cycling in Li-ion Batteries: Review and New Experimental Results

et al. 2023

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“…Traditional ferroelectric materials such as BaTiO 3 , LiNbO 3 , and BiFeO 3 have a vast range of practical applications in nonvolatile memories [ 147 ] and energy storage, [ 148 ] which could be the potential application direction for halide perovskite ferroelectrics as well. However, owing to the immature development of halide perovskite ferroelectric materials, most of the applications for halide perovskite ferroelectrics remain to be accomplished.…”

Section: Potential Applications Of Halide Perovskite Ferroelectricsmentioning

confidence: 99%

Emerging Halide Perovskite Ferroelectrics

et al. 2023

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lasers, [5] single-mode lasers, [6] continuouswave lasers, [7] polariton lasers, [8] and laser arrays. [9] Halide perovskites have also been widely studied in photocatalytic organic reaction, [10] photocatalytic CO 2 reduction, [11] and photocatalytic hydrogen evolution. [12] Due to their broad technological importance, halide perovskites have become the focus of current research.Recently, ferroelectricity has been detected in halide perovskites and quickly attracted widespread interest. [13] Ferroelectricity is a characteristic of spontaneous polarization in certain materials, which can be reversed by applying an external electric field. The discovery of ferroelectricity can be traced back to 1920 [14] (Figure 1a), when Valasek measured the polarization of Rochelle Salt as a function of the applied electric field. Perovskite ferroelectric first appeared on the scene in the early 1940s [15] (Figure 1b). Up to now, perovskite oxides (e.g., BaTiO 3 , [16] PbZr x Ti 1−x O 3 , [17] Bi 4−x La x Ti 3 O 12 , [18] LiNbO 3 , [19] and LiTaO 3 [20] ) as main ferroelectric materials have been widely applied to supercapacitors, [21] memories, [22] sensors, [23] and actuators, [24] which play key roles in modern technologies benefiting human lives. Nevertheless, the fatal weakness of brittleness for most perovskite oxides limits their application in flexible devices. [25] Therefore, perovskite oxide ferroelectrics are losing competitiveness in future technologies pursuing device miniaturization and flexibility. The emergence of halide perovskite ferroelectrics that feature the natural advantages of structural softness and lightweight has thus opened a new chapter in ferroelectric research.Since ferroelectricity was recognized in halide perovskites, the research activities have mainly focused on designing novel halide perovskite ferroelectrics. [35] In the past few years, the collective efforts from interdisciplinary communities have made available a collection of halide perovskite ferroelectrics with distinct compositions and structures (Figure 1c-i), such as 0D (NMP) 3 Sb 2 Cl 9 (NMP = N-methylpyrrolidinium) , [31] 1D (3-pyrrolinium)CdCl 3 , [28] 2D (BEA) 2 PbCl 4 (BEA = benzylammonium), [29] and 3D organometal (AP)RbBr 3 (AP = 3-ammoniopyrrolidinium). [30] Preliminary experiments have revealed the great promise of these materials for applications in ferroelectric photovoltaics, [36] self-powered photodetection, [37] and X-ray detection. [38] On a separate note, the development of halide perovskite ferroelectrics also raises important issues in the mechanistic investigation of halide perovskite in optoelectronics. For example, the possible existence of ferroelectricity was proposed to explain the superior optoelectronic Halide perovskites have gained tremendous attention in the past decade owing to their excellent properties in optoelectronics. Recently, a fascinating property, ferroelectricity, has been discovered in halide perovskites and quickly attracted widespread interest. Compared with traditional perovskite oxide fe...

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“…To obtain thin-film samples of bismuth ferrite, the method of high-frequency magnetron sputtering (HFMS) [22] was used. The HFMS method was carried out on unit created on the basis of industrial vacuum sputtering station UVN-74, upgraded with a planar magnetron with a cathode size of 70 × 300 mm, and with the ability to change the magnetic system dimensions from 45 × 45 to 45 × 250 mm.…”

Section: Sampling and Experiments Proceduresmentioning

confidence: 99%

Electrical and optical properties of thin-film bismuth ferrite

V.A.

Kamynin

et al. 2022

Technical Physics

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The optical and electrical properties of bismuth ferrite thin films obtained by high-frequency magnetron sputtering in an atmosphere of argon and oxygen (80%+20%) has been studied. Investigations of the optical properties have shown that for polycrystalline bismuth ferrite films the optical band gap is ~2.3 eV, which is in the range of given in the literature values. The dependences of the specific electrical conductivity on the magnitude of the electric field has been studied for the synthesized films. It has been established that the electrical conductivity does not depend on the electric field strength up to the value of E=2.1·106 V/m. The experimental results are discussed in terms of the model of charge carrier injection from aluminum electrode into the conduction band of bismuth ferrite. Keywords: electrical conductivity, strong electric fields, optical absorption coefficient, memristor effect.

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Synthesis and properties of multifunctional Si–LiNbO3 heterostructures for non-volatile memory units

Cited by 8 publications

References 47 publications

Lithium Niobate for Fast Cycling in Li-ion Batteries: Review and New Experimental Results

Lithium Niobate for Fast Cycling in Li-ion Batteries: Review and New Experimental Results

Emerging Halide Perovskite Ferroelectrics

Electrical and optical properties of thin-film bismuth ferrite

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