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Cerium dioxide (CeO2) thin films were deposited by atomic layer deposition (ALD) on both Si and TiN substrates. The ALD growth produces CeO2 cubic polycrystalline films on both substrates. However, the films show a preferential orientation…

Materials Science · Physics 2017-06-02 Silvia Vangelista , Rossella Piagge , Satu Ek , Tiina Sarnet , Gabriella Ghidini , Alessio Lamperti

Titanium-based oxides are abundant, chemically stable, non-toxic, and highly versatile materials, with applications ranging from photovoltaics to catalysis. For rutile and anatase phases of Titanium dioxide (TiO2), the bandgap ranges from…

Materials Science · Physics 2022-01-04 Lynet Allan , George O Amolo , Julius Mwabora , Silas Mureramanzi

Thin films of cerium dioxide (CeO2) were deposited by atomic layer deposition (ALD) at 250 {\deg}C on both Si and TiN substrates. The ALD growth produces CeO2 films with polycrystalline cubic phase on both substrates. However, the films…

Materials Science · Physics 2017-05-29 S. Vangelista , R. Piagge , S. Ek , T. Sarnet , G. Ghidini , C. Martella , A. Lamperti

Supported carbon nanosheets and carbon nanotubes served as sacrificial templates for preparing spacious TiO2 photocatalytic thin films. Amorphous TiO2 was deposited conformally on the carbonaceous template material by atomic layer…

We present a study on the crystallization process of undoped and Ta doped TiO2 amorphous thin films. In particular, the effect of ultra-fast annealing treatments in environments characterized by different oxygen concentrations is…

Simple vacuum evaporation technique for deposition of dyes on various solid surfaces has been developed. The method is compatible with conventional solvent-free nanofabrication processing enabling fabrication of nanoscale optoelectronic…

TiO2 is a wide band-gap semiconductor that has been intensively investigated for photocatalysis and water-spiting. However, weak light absorption in the visible region of the spectrum poses stringent limitation to its practical application.…

Materials Science · Physics 2023-02-07 Fernando P. Sabino , Anderson Janotti

Bacterial infections are a common problem in daily life that can affect human health. Researchers are looking for valuable materials that can help prevent such infections and environmental pollutants. Thin films are a well-known application…

Materials Science · Physics 2023-12-18 Mehmet Eymen Sumer , Bengu Ozugur Uysal

Zinc Oxide (ZnO) semiconductor is ideal candidates for ultra-violet (UV) photodetector due to its promising optoelectronic properties. Photodetectors based on ZnO nanostructures show very high photoconductivity under UV light, but they are…

Materials Science · Physics 2019-12-02 Mehmet Ozdogan , Gokhan Utlu , Cem Celebi

This paper reports on the structural and optical properties of Co-doped TiO2 thin films grown onto (0001) Al2O3 substrates by non-reactive pulsed laser deposition (PLD) using argon as buffer gas. It is shown that by keeping constant the…

Materials Science · Physics 2013-07-09 S. Rout , N. Popovici , S. Dalui , M. L. Paramês , R. C. Silva , A. J. Silvestre , O. CondE

Titanium dioxide is a photocatalytic substance of great practical importance. However, with its bandgap in the ultraviolet (UV) regime, native forms (undoped) of TiO2 generally exhibits poor photocatalytic activities under visible light.…

Chemical Physics · Physics 2013-12-04 Mingzheng Wang , Ka-Kit Yee , Biao Nie , Hua Cheng , Jian Lu , Linbao Luo , Zhengtao Xu , Yang Yang Li

Titanium dioxide (TiO$_2$) thin films are commonly used as photocatalytic materials. Here, we enhance the photocatalytic activity of devices based on TiO$_2$ by combining nanostructured glass substrates with metallic plasmonic…

Ruthenium metal and its oxide stand out for their exceptional catalytic activity, stability in Oxygen Evolution Reactions (OER) and electrical conductivity, making them indispensable in electronics and electrocatalysis. In this study,…

Materials Science · Physics 2024-10-31 S. S. Nalawade , R. S. Kim , J. Mahl , S. Cherono , I. Chris-Okoro , V. Craciun , J. Yan , E. Crumlin , D. Kumar , S. Aravamudhan

Topological insulator films are promising materials for optoelectronics due to a strong optical absorption and a thickness dependent band gap of the topological surface states. They are superior candidates for photodetector applications in…

Mesoscale and Nanoscale Physics · Physics 2018-09-11 Mathias Rosdahl Brems , Jens Paaske , Anders Mathias Lunde , Morten Willatzen

This study reports on the properties of nitrogen doped titanium dioxide $TiO_2$ thin films considering the application as transparent conducting oxide (TCO). Sets of thin films were prepared by sputtering a titanium target under oxygen…

Oxygen (O2) adsorbed on metal oxides is important in catalytic oxidation reactions, chemical sensing, and photocatalysis. Strong adsorption requires transfer of negative charge from oxygen vacancies (VOs) or dopants, for example. With…

Atomic layer deposition (ALD) enables the conformal coating of porous materials, making the technique suitable for pore size tuning at the atomic level, e.g., for applications in catalysis, gas separation and sensing. It is, however, not…

Atomically-abrupt interfaces in transition metal oxide (TMO) heterostructures could host a variety of exotic condensed matter phases that may not be found in the bulk materials at equilibrium. A critical step in the development of such…

Designing a thin film structure often begins with choosing a film deposition method that employs a specific primary process by which chemical species are formed and transported. In other words, a film deposition system in which two…

Applied Physics · Physics 2020-07-31 Brian Giraldo , David M. Fryauf , Brandon Cheney , Nobuhiko P. Kobayashi

Thin aluminum oxide films were deposited by a new and simple physicochemical method called chemical liquid phase deposition (CLD) on semiconductor materials. Aluminum sulfate with crystallized water and sodium bicarbonate were used as…

Materials Science · Physics 2007-05-23 Jie Sun , Yingchun Sun
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