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In this work, tunable vanadium dioxide (VO2) metafilms on different substrate materials fabricated via low-oxygen furnace oxidation are demonstrated for self-adaptive daytime solar heating and nighttime radiative cooling. Because of its…

Materials Science · Physics 2025-12-25 Ken Araki , Vishwa Krishna Rajan , Liping Wang

Recently, a homogenization procedure has been proposed, based on the tight lower bounds of the Bergman-Milton formulation, and successfully applied to dilute ternary nanocomposites to predict optical data without using any fitting…

Materials Science · Physics 2016-12-09 Justin Trice , Hernando Garcia , Radhakrishna Sureshkumar , Ramki Kalyanaraman

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…

The hybrid metal-dielectric nanostructures (HMDN) are promising candidates to address the ohmic loss by conventional nanostructures in photovoltaic applications by strong confinement and high scattering directivity. In this study, we…

Optics · Physics 2025-05-16 Soikot Sarkar , Sajid Muhaimin Choudhury

Nano-scaled dielectric and metallic structures are popular light tapping structures in thin-film solar cells. However, a large parasitic absorption in those structures is unavoidable. Most schemes based on such structures also involve the…

Optics · Physics 2015-04-24 DongLin Wang , Huijuan Cui , Gang Su

Sub-micrometer thin films are promising platforms for emerging flexible photovoltaic devices. Although the current market already produces efficient solar cells, the average wafer thickness of these devices remains far from the…

Materials Science · Physics 2025-04-29 Cesar E. P. Villegas , Enesio Marinho , A. C. Dias , Pedro Venezuela , Alexandre R. Rocha

This study aims towards a systematic reciprocity of the tunable synthesis parameters - partial pressure of N$_2$ gas, ion energy (\Ei) and Ti interface in TiN thin film samples deposited using ion beam sputtering at ambient temperature…

Materials Science · Physics 2020-06-22 Susmita Chowdhury , Rachana Gupta , Shashi Prakash , Layanta Behera , D. M. Phase , Mukul Gupta

Diffusion mediated interaction in metal-substrate assembly during high temperature annealing leads to possible formation of new composite materials. Here, sputtered grown Ti films on Si3N4/Si substrate has been reported to produce titanium…

Materials Science · Physics 2020-11-19 Sachin Yadav , Sangeeta Sahoo

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…

Terbium doped silicon oxynitride host matrix is suitable for various applications such as light emitters compatible with CMOS technology or frequency converter systems for photovoltaic cells. In this study, amorphous Tb3+ ion doped…

Transparent titania coatings have self-cleaning and anti-reflection properties (AR) that are of great importance to minimize soiling effect on photovoltaic modules. In this work, TiO2 nanocolloids prepared by polyol reduction method were…

Mercury-Sensitized Photo-Assisted Chemical Vapor Deposition (Hg-Photo-CVD) technique opens new possibilities for reducing thin film growth temperature and producing novel semiconductor materials suitable for the future generation of high…

Materials Science · Physics 2007-05-23 A. Barhdadi , S. Karbal , N. Mgafad , A. Benmakhlouf , M. Chafik El Idrissi , B. M. Aka

Pb(Zr0.52Ti0.48)O3 (PZT) thin films were in situ deposited by pulsed laser deposition (PLD) on Pt/Ti/SiO2/Si substrates using a template layer derived by sol-gel method. A 0.1-$\mu$m-thick PZT layer with (111) or (100)-preferred orientation…

Other Computer Science · Computer Science 2007-11-29 Jing Li , L. Dedeng , Suntao Wu

An ultrabroad absorber based on double-ring-shaped titanium nitride (TiN) nanoresonators, which can work in high temperatures, is proposed and numerically studied. The absorber with some optimal parameters exhibits an averaged absorption of…

Optics · Physics 2021-02-03 Shun Cao , Yi Jin , Hongguang Dong , Tingbiao Guo , Zhenchao Liu , Jinlong He , Sailing He

A template-free process for the synthesis of nanocrystalline TiO2 hierarchical microstructures by reactive Pulsed Laser Deposition (PLD) is here presented. By a proper choice of deposition parameters a fine control over the morphology of…

Materials Science · Physics 2013-11-28 F. Di Fonzo , C. S. Casari , V. Russo , M. F. Brunella , A. Li Bassi , C. E. Bottani

Thermochromic vanadium dioxide thin films have attracted much attention recently for constructing variable-emittance coatings upon its insulator-metal phase transition for dynamic thermal control. However, fabrication of high-quality…

Materials Science · Physics 2025-05-20 Vishwa Krishna Rajan , Jeremy Chao , Sydney Taylor , Liping Wang

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

Superconducting resonators used in millimeter-submillimeter astronomy would greatly benefit from deposited dielectrics with a small dielectric loss. We deposited hydrogenated amorphous silicon films using plasma-enhanced chemical vapor…

Instrumentation and Methods for Astrophysics · Physics 2023-02-03 Bruno T. Buijtendorp , Juan Bueno , David J. Thoen , Vignesh Murugesan , Paolo M. Sberna , Jochem J. A. Baselmans , Sten Vollebregt , Akira Endo

Concentrating solar power, particularly parabolic trough system with solar concentrations less than 50, requires spectrally selective solar absorbers that are thermally stable at high temperatures of 400degC above to achieve high…

Applied Physics · Physics 2020-12-16 Hassan Alshehri , Qing Ni , Sydney Taylor , Ryan McBurney , Hao Wang , Liping Wang

Power-conversion efficiency is a critical factor for the wider adoption of solar-cell modules. Thin-film solar cells are cheap and easy to manufacture, but their efficiencies are low compared to crystalline-silicon solar cells and need to…

Applied Physics · Physics 2020-08-04 Faiz Ahamd , Akhlesh Lakhtakia , Peter B. Monk