Oxide‐Based Optoelectronics

Demkov, Alexander A.; Ortmann, J. Elliott; Reynaud, Marc; Hamze, Ali; Ponath, Patrick; Li, Wente

doi:10.1002/pssb.202000497

Cited by 8 publications

(4 citation statements)

References 65 publications

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“…The electro-optic modulator, used to interconvert electrical and optical signals for long-haul telecommunications, uses bulk single crystals of lithium niobate (LiNbO 3 , LNO). There is significant interest in integrating optical devices into thin film form which offers benefits such as smaller devices, lower drive voltages, and integrability with photonics and optical circuitry/computing [179]. Ferroelectric materials have traditionally been considered for thin-film optics as they exhibit the electro-optic, elasto-optic, and bulk photovoltaic effects [180].…”

Section: Nonlinear Optical Effectsmentioning

confidence: 99%

Strain and orientation engineering in ABO₃ perovskite oxide thin films

Sando¹

2022

J. Phys.: Condens. Matter

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Perovskite oxides with chemical formula ABO3 are widely studied for their properties including ferroelectricity, magnetism, strongly correlated physics, optical effects, and superconductivity. A thriving research direction using such materials is through their integration as epitaxial thin films, allowing many novel and exotic effects to be discovered. The integration of the thin film on a single crystal substrate, however, can produce unique and powerful effects, and can even induce phases in the thin film that are not stable in bulk. The substrate imposed mechanical boundary conditions such as strain, crystallographic orientation, octahedral rotation patterns, and symmetry can also affect the functional properties of perovskite films. Here, the author reviews the current state of the art in epitaxial strain and orientation engineering in perovskite oxide thin films. The paper begins by introducing the effect of uniform conventional biaxial strain, and then moves to describe how the substrate crystallographic orientation can induce symmetry changes in the film materials. Various material case studies, including ferroelectrics, magnetically ordered materials, and nonlinear optical oxides are covered. The connectivity of the oxygen octahedra between film and substrate depending on the strain level as well as the crystallographic orientation is then discussed. The review concludes with open questions and suggestions worthy of the community’s focus in the future.

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Section: Nonlinear Optical Effectsmentioning

confidence: 99%

Strain and orientation engineering in ABO₃ perovskite oxide thin films

Sando¹

2022

J. Phys.: Condens. Matter

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Section: Introductionmentioning

confidence: 99%

“…[6] In this context, a remarkable range of new functionalities has been revealed and established in perovskite oxides and they have started to find their way into industrial applications. [7,8] Many studies have been reported on the different synthetic strategies applied for the fabrication of oxide-based perovskites: from solution route approaches to physical vapor deposition processes. [9][10][11] Among them, metal-organic chemical vapor deposition (MOCVD) routes have been largely employed for the production of oxide materials in form of thin films, and represent one of the most flexible bottom-up approaches, where functional structures are assembled starting from well-defined building-blocks, which are fine chemicals engineered through chemical synthesis.…”

mentioning

confidence: 99%

Metal‐Organic Chemical Vapor Deposition of Oxide Perovskite Films: A Facile Route to Complex Functional Systems

Presti

Pellegrino

Malandrino

2022

Adv Materials Inter

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Perovskite oxide type materials exhibit a great profusion of unique functional properties and for this reason they have been named inorganic chameleon. Nevertheless, their actual applications require the availability of these systems in thin‐film form synthesized through a simple, scalable, and straightforward technique. Metal‐organic chemical vapor deposition (MOCVD) has been shown to be an outstanding process to prepare thin films of multi‐component oxides. Herein, the focus is devoted to oxide perovskite thin films on both single crystal and non‐single crystal substrates through MOCVD processes. This study discusses the principles and the basic rules governing conventional, plasma‐enhanced, and liquid‐assisted MOCVD processes. Among a plethora of oxide perovskites, several classes of functionalities belonging to the perovskite class: from superconductors to dielectrics and giant‐k dielectrics, from colossal magnetoresistance to ionic conductors, piezoelectrics and ferroelectrics, are explored in detail.

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“…monolithic integration, would enable the fabrication of emerging EO devices integrated with Si photonics. 27,28) So far, this has been demonstrated for BaTiO 3 films using molecular beam epitaxy but remains challenging considering the fabrication process and cost. 2,4,5,12) Ferroelectricity in fluorite HfO 2 -based materials was reported by Boscke et al in 2011.…”

Section: Introductionmentioning

confidence: 99%

Influence of orientation on the electro-optic effect in epitaxial Y-doped HfO₂ ferroelectric thin films

Kondo

Shimura

Teranishi

et al. 2021

Jpn. J. Appl. Phys.

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Recently, we reported linear electro-optic (EO) effects in (100)-epitaxial yttrium-doped hafnium dioxide (Y-HfO 2 ) ferroelectric thin films. In this study, we have investigated the influence of orientation on the EO effect in Y-HfO 2 thin-film. (111)-epitaxial undoped HfO 2 and Y-HfO 2 films were deposited on Sn-doped In 2 O 3 /yttria-stabilized zirconia (111) substrates at room temperature through radiofrequency magnetron sputtering. Although the undoped HfO 2 film showed typical paraelectric characteristics, ferroelectricity was observed in the (111)-Y-HfO 2 film. Remnant polarization in the (111)-Y-HfO 2 film was higher than that in the (100)-Y-HfO 2 film. The (111)-Y-HfO 2 film exhibited a linear EO effect based on ferroelectricity, which is consistent with that of the (100)-Y-HfO 2 film. The average EO coefficient r c of the (111)-Y-HfO 2 film was 0.67 pm V −1 , which is higher than that of the (100)-Y-HfO 2 film. This result is reasonable considering the difference in remnant polarization between the (100)-Y-HfO 2 and (111)-Y-HfO 2 films.

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Oxide‐Based Optoelectronics

Cited by 8 publications

References 65 publications

Strain and orientation engineering in ABO₃ perovskite oxide thin films

Strain and orientation engineering in ABO₃ perovskite oxide thin films

Metal‐Organic Chemical Vapor Deposition of Oxide Perovskite Films: A Facile Route to Complex Functional Systems

Influence of orientation on the electro-optic effect in epitaxial Y-doped HfO₂ ferroelectric thin films

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Oxide‐Based Optoelectronics

Cited by 8 publications

References 65 publications

Strain and orientation engineering in ABO3 perovskite oxide thin films

Strain and orientation engineering in ABO3 perovskite oxide thin films

Metal‐Organic Chemical Vapor Deposition of Oxide Perovskite Films: A Facile Route to Complex Functional Systems

Influence of orientation on the electro-optic effect in epitaxial Y-doped HfO2 ferroelectric thin films

Contact Info

Product

Resources

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Strain and orientation engineering in ABO₃ perovskite oxide thin films

Strain and orientation engineering in ABO₃ perovskite oxide thin films

Influence of orientation on the electro-optic effect in epitaxial Y-doped HfO₂ ferroelectric thin films