Rutile Tio Film

Rutile TiO2-based perovskite solar cells - Journal of ...

A perovskite solar cell based on rutile TiO 2 film was prepared and its photovoltaic performance was compared to an anatase TiO 2-based perovskite solar cell.Rutile TiO 2 nanoparticles with aspect ratio of 0.2 (20 nm wide and 100 nm long) were prepared by hydrolysis of TiCl 4 at ambient temperature. Anatase TiO 2 nanoparticles with diameter of about 50 nm were hydrothermally synthesized.

Preparation of rutile TiO 2 thin films by laser chemical ...

The single-phase rutile TiO 2 thin films with different morphologies were obtained. The morphologies of TiO 2 thin films were classified into three typical types, including the powdery, Wulff-shaped and granular microstructures. p tot and T dep were the two critical factors that could be effectively used for controlling the morphology of the films.

On the Crystal Structural Control of Sputtered TiO 2 Thin ...

Background. Rutile and anatase TiO 2 films are widely used in various industrial applications [1–3].For example, rutile TiO 2 films are used as an optical coating material because of their high refractive index whereas anatase TiO 2 films are utilised as photocatalysts or transparent electrodes [].Rutile TiO 2 is the most common phase in nature, and anatase TiO 2 transforms to rutile at ...

Growth of rutile-TiO2 thin films via Sn doping and ...

Jul 01, 2019· A new route to realize rutile-TiO 2 films was proposed without noble-metal-based electrode.. Sn doping in TiO 2 thin films was effective in improving the rutile phase of TiO 2 films.. A rutile phase of TiO 2 was enhanced by the insertion of an ultra-thin SnO 2 interlayer.. The Sn-doped TiO 2 thin film on a SnO 2 interlayer exhibited a high-k value of about 80.

Title: Preparation of atomically flat rutile TiO 2 (001 ...

Abstract. The availability of low-index rutile TiO 2 single crystal substrates with atomically flat surfaces is essential for enabling epitaxialgrowth of rutile transition metal oxide films. The high surface energy of the rutile (001) surface often leads to surface faceting, which precludes the sputter and annealing treatment commonly used for the preparation of clean and atomically flat TiO 2 ...

Controlled formation of anatase and rutile TiO 2 thin ...

Sep 23, 2015· We discuss the formation of TiO 2 thin films via DC reactive magnetron sputtering. The oxygen concentration during sputtering proved to be a crucial parameter with respect to the final film structure and properties. The initial deposition provided amorphous films that crystallise upon annealing to anatase or rutile, depending on the initial sputtering conditions.

Rutile - Wikipedia

Rutile is a mineral composed primarily of titanium dioxide (TiO 2), and is the most common natural form of TiO 2.Other rarer polymorphs of TiO 2 are known, including anatase, akaogiite, and brookite.. Rutile has one of the highest refractive indices at visible wavelengths of any known crystal and also exhibits a particularly large birefringence and high dispersion.

Ultrahigh-pressure fabrication of single-phase α-PbO2-type ...

Feb 14, 2020· A rutile TiO 2 (100) epitaxial thin film is used as a precursor, and a structural phase transition is induced at 8 GPa and 800–1000 °C. This study demonstrates a new synthetic route to obtain ultrahigh-pressure-phase materials. The fabrication of epitaxial thin film ultrahigh-pressure phases paves the way for investigating the physical ...

Preferential growth of thin rutile TiO films upon thermal ...

A randomly oriented rutile TiO film was formed for2 Ti-25 films. However, preferred orientation along the TiO 2 (200 ) plane was developed from the starting Ti-500 film, having the highest degree (sharpest reflection peaks ) of crystallinity among all the Ti films prepared. In other words, (200 )-oriented TiO film …

Synthesis of Anatase (Core)/Rutile (Shell) Nanostructured ...

The latter technique is well-known to increase the energy load during the growth of the film, which is a key parameter to successfully obtain the TiO 2 phase normally only achieved at high temperature, i.e., rutile. The peak current, the frequency, and the pulse width were optimized to obtain the desired crystalline structure and thickness of ...

(PDF) Anatase and rutile TiO2 films deposited by arc-free ...

A complete rutile phase was obtained for the TiO2 film deposited by DOMS at a high target peak current (200 A). The mechanical and optical properties of the anatase and rutile TiO2 films were also ...

Crystallization of TiO 2 polymorphs from RF-sputtered ...

Feb 06, 2020· Crystalline TiO 2 films of anatase, brookite, and rutile are reproducibly made from amorphous precursors deposited by RF magnetron sputtering, producing large-area, single phase films of uniform thickness. Sputtered amorphous TiO 2 precursor thin films follow the general behavior observed for amorphous precursor thin films generated by pulsed laser deposition, namely, that oxygen …

RF Magnetron Sputtering Deposition of TiO 2 Thin ... - MDPI

However, in nature, TiO 2 can be found in three forms: brookite, which has an orthorombic structure with the spatial group Pbca; and two tetragonal structures—rutile (P4 2 /mnm) and anatase (I4 1 /amd). In the thin film industry, the rutile and anatase phases are the most commonly used, each of them having different advantages over the other.

Carbon quantum dots modified anatase/rutile TiO 2 ...

Jul 15, 2020· Based on the above discussion, a novel CQDs/A/R-TiO 2 photoanode was designed by growth of anatase TiO 2 nanothorns on rutile TiO 2 nanorods (A/R-TiO 2) and further surface modification of CQDs ().Compared with the pristine TiO 2 at 0.6 V vs. RHE, the photocurrent is increased by 11.72 times and the onset potential is negatively shifted by 240 mV for CQDs/A/R-TiO 2.

Intense Pulsed Light Conversion of Anatase to Rutile TiO 2 ...

Jun 20, 2019· The anatase and rutile hybrid TiO 2-SnO 2 /MWCNTs/PVB sensing composite film showed an average of 8.8 times higher responses to VOCs compared with pure anatase TiO 2-SnO 2 /MWCNTs/PVB composite film prepared without IPL. The hybrid sensors exhibited negative motional resistance responses to VOCs and positive motional resistance responses to non ...

Gradient Sn-Doped Heteroepitaxial Film of Faceted Rutile ...

Here, an unusual dense film of faceted rutile TiO 2 single crystals with a gradient of the Sn 4+ dopant grown heteroepitaxially on the FTO layer is obtained by a hydrothermal route and subsequent thermal treatment. Owing to the global features including low concentration of defects, ...

H 2 adsorption and dissociation on PdO(101) films ...

On the monolayer PdO(101)/TiO 2 (110) film, the TiO 2 support effect leads to stronger H 2 molecular adsorption on coordinatively unsaturated Pd top sites than on pure PdO surface. H 2 dissociation with the formation of OH is preferred thermodynamically but slightly unfavorable kinetically on the film due to the TiO 2 support effect.

Atomically flat reconstructed rutile TiO (001) surfaces ...

rutile oxide film growth, the availability of different low-index atomically flat rutile TiO 2 substrates is a key requirement for advancing the utility of rutile transition metal oxide heterostructures in condensed matter and applied physics. To date, most rutile oxide heterostructures are grown on TiO 2 …

Rutile-Type TiO2 Thin Film for High-k Gate Insulator ...

Kadoshima et al. reported that if the TiO 2 film contains a small number of oxygen vacancies, the transformation to rutile is accelerated and pure rutile is obtained upon annealing in an O 2 ...

Deposition of TiO2 thin films using RF magnetron ...

magnetron sputtering. Highly oriented, crack-free, stoichiometric polycrystalline rutile TiO 2 thin film was obtained after annealing at 1000 8C for 1 h. The maximum UV-visible transmittance and hardness of the film were over 90% and 1700 HK 0.025, respectively. Different contact

Permittivity Enhanced Atomic Layer Deposited HfO2 Thin ...

Jul 09, 2010· The thin HfO 2 layer with the higher dielectric constant deposited on rutile TiO 2 suppressed the leakage current effectively. Consequently, an equivalent oxide thickness of 0.41 nm from the HfO 2 /TiO 2 bilayer (thickness of HfO 2 and TiO 2 was 0.5 and 6 nm, respectively) was achieved with a leakage current of ∼2 × 10 −7 A/cm 2 at an ...

Strain-induced structural transition of rutile type ReO2 ...

Sep 18, 2020· Rutile-related (tetragonal rutile and monoclinic distorted rutile) ReO 2 epitaxial thin films were grown on rutile TiO 2 single crystalline substrates by reactive pulsed laser deposition of the Re metal target under a N 2 O atmosphere. The ReO 2 film underwent structural phase transition from the monoclinic to tetragonal phase with the decreasing film thickness, driven by compressive lattice ...

Rutile TiO2 films with 100% exposed pyramid-shaped (111 ...

In this work, a facile hydrothermal method was employed to directly grow the rutile TiO 2 film with 100% exposed pyramid-shaped (111) surface onto a FTO conducting substrate, and the resulting rutile TiO 2 film was used as the photoanode after annealing at 450 °C for 2 h in argon (Ar) to investigate photoelectrocatalytic properties under UV and visible light irradiation.

Growth of Oriented Single-Crystalline Rutile TiO2 Nanorods ...

The epitaxial relation between the FTO substrate and rutile TiO 2 with a small lattice mismatch plays a key role in driving the nucleation and growth of the rutile TiO 2 nanorods on FTO. With TiCl 4 -treatment, a light-to-electricity conversion efficiency of 3% could be achieved by using 4 μm-long TiO 2 nanorod films as the photoanode in a DSSC.

Hydrothermal growth of rutile TiO 2 nanorod films on ...

May 31, 2011· The rutile TiO 2 film formed on the 800 °C annealed Ti substrate protected the Ti substrate against the chemical etching during the hydrothermal treatment (Fig. 3C 1), which implied that the rutile TiO 2 was stable in this concentrated hydrochloric acidic solution because the electrostatic repulsive energy of rutile titania was minimized in a ...

(PDF) Review on: TiO2 Thin Film as a Metal Oxide Gas Sensor

Review on: TiO 2 Thin Film as a Metal Oxide Gas Sensor. Receive Date: ... anatase TiO 2 and rutile TiO 2 are extremely studied [38]. TiO 2 material has grown excessive import appearing in .

Understanding the anatase–rutile phase junction in charge ...

The TiO 2 bilayer films consisting of an internal anatase phase TiO 2 layer and external rutile phase TiO 2 layer were then fabricated. Firstly, the precursor film was deposited by adjusting the O 2 partial pressure gradually from 12% to 0% during the deposition process ().After RTA treatment, the internal amorphous TiO 2 deposited in an oxygen-rich atmosphere was crystallized into anatase ...

Investigation on the film-coating mechanism of alumina ...

Aug 01, 2017· The alumina and alumina-coated rutile TiO 2 samples were synthesized by the chemical liquid deposition method under various pH values and aging temperature. Highly-dispersed porous and continuous hydrous alumina was successfully coated on the surface of rutile TiO 2 sample. With the increase of the boehmite content of coating film, the alumina coated rutile TiO 2 samples showed …

Titanium dioxide - Wikipedia

Titanium dioxide, also known as titanium(IV) oxide or titania / t aɪ ˈ t eɪ n i ə /, is the naturally occurring oxide of titanium, chemical formula TiO 2.When used as a pigment, it is called titanium white, Pigment White 6 (PW6), or CI 77891.Generally, it is sourced from ilmenite, rutile, and anatase.It has a wide range of applications, including paint, sunscreen, and food coloring.

Effect of TiO 2 rutile nanorods on the photoelectrodes of ...

The trends of diffusion coefficients by TiO 2 structures are known to be reasonably consistent with the resistances in the TiO 2 film determined by EIS [22,23]. In Figure Figure3, 3, all the DSSCs with 1-D rutile nanorods have a higher J sc than the 0 wt.% TiO 2 electrode.

Facile fabrication of SnO2 modified TiO2 nanorods film for ...

The band gap of SnO 2 is wider than that of rutile TiO 2, and the CB and valance band (VB) of SnO 2 can match well with those of TiO 2 . When the white light illumined this composite film, the photogenerated electrons in the VB of TiO 2 and SnO 2 were photoexcited and immigrated to …