Strongly enhanced and tunable photovoltaic effect in ferroelectric-paraelectric superlattices

Ever since the first observation of a photovoltaic effect in ferroelectric BaTiO3, studies have been devoted to analyze this effect, but only a few attempted to engineer an enhancement. In conjunction, the steep progress in thin-film fabrication has opened up a plethora of previously unexplored avenues to tune and enhance material properties via growth in the form of superlattices. In this work, we present a strategy wherein sandwiching a ferroelectric BaTiO3 in between paraelectric SrTiO3 and CaTiO3 in a superlattice form results in a strong and tunable enhancement in photocurrent. Comparison with BaTiO3 of similar thickness shows the photocurrent in the superlattice is 103 times higher, despite a nearly two-thirds reduction in the volume of BaTiO3. The enhancement can be tuned by the periodicity of the superlattice, and persists under 1.5 AM irradiation. Systematic investigations highlight the critical role of large dielectric permittivity and lowered bandgap.

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High entropy silicides: CALPHAD-guided prediction and thin film fabrication

Scripta Materialia ◽

10.1016/j.scriptamat.2021.113914 ◽

2021 ◽

Vol 201 ◽

pp. 113914

Author(s):

Alexandra L. Vyatskikh ◽

Benjamin E. MacDonald ◽

Alexander D. Dupuy ◽

Enrique J. Lavernia ◽

Julie M. Schoenung ◽

...

Keyword(s):

Thin Film ◽

High Entropy ◽

Thin Film Fabrication ◽

Film Fabrication

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Magnetic τ-MnAlC thin film fabrication by high-vacuum thermal evaporation

Materials Letters ◽

10.1016/j.matlet.2021.129657 ◽

2021 ◽

pp. 129657

Author(s):

J.D. Gamez ◽

H. Martínez-Sánchez ◽

J.L. Valenzuela ◽

L. Marín ◽

L.A. Rodríguez ◽

...

Keyword(s):

Thin Film ◽

Thermal Evaporation ◽

High Vacuum ◽

Thin Film Fabrication ◽

Vacuum Thermal Evaporation ◽

Film Fabrication

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OLED thin film fabrication from poorly soluble terbium o -phenoxybenzoate through soluble mixed-ligand complexes

Organic Electronics ◽

10.1016/j.orgel.2015.11.006 ◽

2016 ◽

Vol 28 ◽

pp. 319-329 ◽

Cited By ~ 17

Author(s):

Alena S. Kalyakina ◽

Valentina V. Utochnikova ◽

Elena Yu. Sokolova ◽

Andrey A. Vashchenko ◽

Leonid S. Lepnev ◽

...

Keyword(s):

Thin Film ◽

Mixed Ligand ◽

Mixed Ligand Complexes ◽

Thin Film Fabrication ◽

Poorly Soluble ◽

Film Fabrication

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Chloroform-soluble poly(o-methoxyaniline) for ultra-thin film fabrication

Thin Solid Films ◽

10.1016/0040-6090(92)90786-b ◽

1992 ◽

Vol 221 (1-2) ◽

pp. 5-8 ◽

Cited By ~ 20

Author(s):

R.M. Faria ◽

L.H.C. Mattoso ◽

M. Ferreira ◽

O.N. Oliveira ◽

D. Gonçalves ◽

...

Keyword(s):

Thin Film ◽

Thin Film Fabrication ◽

Film Fabrication ◽

Soluble Poly ◽

Ultra Thin Film

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Indium oxide co-doped with tin and zinc: A simple route to highly conducting high density targets for TCO thin-film fabrication

Solid State Sciences ◽

10.1016/j.solidstatesciences.2012.04.021 ◽

2012 ◽

Vol 14 (7) ◽

pp. 914-919 ◽

Cited By ~ 7

Author(s):

I. Saadeddin ◽

H.S. Hilal ◽

R. Decourt ◽

G. Campet ◽

B. Pecquenard

Keyword(s):

Thin Film ◽

Indium Oxide ◽

High Density ◽

Simple Route ◽

Thin Film Fabrication ◽

Film Fabrication ◽

Co Doped

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Effect for Micro-Transformer Using Different Substrate Materials

Applied Mechanics and Materials ◽

10.4028/www.scientific.net/amm.135-136.484 ◽

2011 ◽

Vol 135-136 ◽

pp. 484-486

Author(s):

Xiao Wei Hou ◽

Shi Bin Liu ◽

Jie Chang

Keyword(s):

Thin Film ◽

Substrate Material ◽

Main Function ◽

Voltage Gain ◽

Thin Film Fabrication ◽

Surface Configuration ◽

Parasitic Effect ◽

Film Fabrication ◽

Materials Used ◽

Quartz Ceramics

The main function of the substrate is to sustain and improve the performance of the thin-film. The property and surface configuration of the substrate material have a huge influence on the characteristics of the thin-film. Fabrication of substrate for the micro-transformer can choose a variety of materials, including the silicon, metal, glass, quartz, ceramics, plastics, polymer, etc. Different materials used as substrate have different effects on voltage gain and insertion loss of the transformer. At present, the silicon is used in most cases for its excellent properties. However, it is increasingly found that there exists some problems to gain better performance, such as the parasitic effect. And so, to employ other materials is essential. This paper discusses the effects induced by using different substrate materials. Through the analysis, a general cognition about how to choose the materials can be obtained, which is helpful to design and fabrication of the micro-transformer.

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