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Low resistivity (~3-24 mOhm.cm) with tunable n- and p-type phase pure Cu2O thin films have been grown by pulsed laser deposition at 25-200 0C by varying the background oxygen partial pressure (O2pp). Capacitance data obtained by…

Materials Science · Physics 2020-06-01 Syed Farid Uddin Farhad , David Cherns , James Smith , Neil Fox , David Fermín

Tailored Pt nanoparticle catalysts are promising candidates to accelerate the oxygen reduction reaction (ORR) in fuel cells. However, the search for active nanoparticle catalysts is hindered by laborious effort of experimental synthesis and…

Chemical Physics · Physics 2018-07-27 Marlon Rueck , Aliaksandr Bandarenka , Federico Calle-Vallejo , Alessio Gagliardi

We fabricate and compare nanocomposite thin-film ZnO chemoresistive acetone sensors with gold or palladium nanoparticles on the surface, at low operating temperatures. The sensors are fabricated by pulsed laser deposition and operate in the…

Materials Science · Physics 2017-04-17 M. Alexiadou , M. Kandyla , G. Mousdis , M. Kompitsas

An original modification of the standard Pulse Laser Deposition (PLD) method for preparing both undoped and indium doped zinc oxide (ZnO:In) thin films at low substrate temperature is proposed. This preparation method does not demand any…

Materials Science · Physics 2016-08-31 V. Savchuk , B. Kotlyarchuk , M. Oszwaldowski

We have grown Au/Ag modulated nanostructured thin films by pulsed laser deposition using metallic targets. The growths performed at room temperature involved deposition of alternate layers of the two metals with larger thickness of Au and…

Materials Science · Physics 2018-09-03 Abhijit Biswas , Swati Parmar , Anupam Jana , Ram Janay Chaudhary , Satishchandra Ogale

Ternary transition metal nitrides (TMNs) promise to significantly expand the material design space by opening new functionality and enhancing existing properties. However, most systems have only been investigated computationally and limited…

Semiconductor nanocrystals (NCs) are the building blocks for the future opto-electronic devices, and other energy-harvesting applications. Although the energy demand has been increasing, energy sources are diminishing. Hydrogen, green…

Materials Science · Physics 2015-06-30 Ebin Bastola

Pd-based electro-catalysts are a key component to improve the methanol oxidation reaction (MOR) kinetics from alcohol fuel cells. However, the performance of such catalysts is degraded over time. To understand the microstructural/atomic…

Materials Science · Physics 2023-02-09 Leonardo Shoji Aota , Se-Ho Kim , Chanwon Jung , Siyuan Zhang , Baptiste Gault

For generation of sustainable, clean and highly efficient energy, the electrocatalytic oxygen evolution reaction represents an attractive platform, thus inviting immense research activities in recent years. However, designing the catalyst…

A new dual plasma coating process to produce platinum-free catalysts for the oxygen reduction reaction in a fuel cell is introduced. The catalysts thus produced were analysed with various methods. Electrochemical characterisation was…

Hydrogen-based fuels demand high-density storage that can operate under ambient temperatures. Pd and its alloys are the most investigated metal hydrides for hydrogen fuel cell applications. This study presented an alternative Pd alloy for…

Materials Science · Physics 2022-07-13 Pritam Das , Young-Su Lee , Seung-Cheol Lee , Satadeep Bhattacharjee

Here we show results of first-principles investigations aiming at tuning and controlling the catalytic activity of gold nanoclusters through the design of the underlying support. We show that gold clusters adsorbed on a very thin (2 layers)…

Materials Science · Physics 2011-02-16 Chun Zhang , Bokwon Yoon , Uzi Landman

Palladium satisfies most of the requirements for an effective hydrogen storage material with two major drawbacks: it has a relatively low gravimetric hydrogen density and is prohibitively expensive for large-scale applications. Pd-based…

Materials Science · Physics 2022-01-19 S. S. Das , G. Kopnov , A. Gerber

The synthesis of transition metal dichalcogenides (TMDs) has been a primary focus for 2D nanomaterial research over the last 10 years, however, only a small fraction of this research has been concentrated on transition metal ditellurides.…

Entropy stabilization has garnered significant attention as a new approach to designing novel materials. Much of the work in this area has focused on bulk ceramic processing, leaving entropy-stabilized thin films relatively underexplored.…

Materials Science · Physics 2020-06-29 Valerie Jacobson , Dave Diercks , Bobby To , Andriy Zakutayev , Geoff Brennecka

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

The future of 2D flexible electronics relies on the preparation of conducting ultrathin films of materials with mechanical robustness and flexibility in a simple but controlled manner. In this respect, metal-organic compounds present…

Single atom catalysts (SACs) based on 2D materials are identified to be efficient in many catalytic reaction. In this work, the catalytic performance of Pd/Pt embedded planar carbon nitride (CN) for CO oxidation, has been investigated via…

Chemical Physics · Physics 2020-01-08 Yongchao Rao , Xiangmei Duan

Photothermal conversion (PTC) nanostructures have great potential for applications in many fields, and therefore, they have attracted tremendous attention. However, the construction of a PTC nanoreactor with multi-compartment structure to…

Surface plasmonic effects of metallic particles have been known to be an effective method to improve the performance light emitting didoes. In this work, we reported the sputtered Au nanoparticles enhanced electroluminescence in inverted…

Materials Science · Physics 2018-08-29 Abida Perveen , Xin Zhang , Jialun Tang , Dengbao Han , Shuai Chang , Luogen Deng , Wenyu Ji , Haizheng Zhong