Results 31 to 40 of about 3,985,949 (348)

Thermal unequilibrium of strained black CsPbI3 thin films

open access: yesScience, 2019
Strain-stabilized perovskites The perovskite materials used for solar cells and light-emitting diodes (which are black in color) are generally less stable at room temperature than the electronically inactive nonperovskite phases (which are yellow in ...
J. Steele   +26 more
semanticscholar   +1 more source

Surface Acoustic Waves in Thin Films Nanometrology [PDF]

open access: yes, 2015
Thin films nanometrology is an emerging field in nanoscience as the synthesis, processing and applications of nanostructured thin films require an in-depth knowledge of their elastic constants. The elastic energy of a surface acoustic wave propagating in
BETTUCCI, Andrea
core   +1 more source

Vertical GaN Power MOSFET with Integrated Fin-Shaped Diode for Reverse Conduction

open access: yesNanoscale Research Letters, 2022
A vertical GaN power MOSFET featuring an integrated fin-shaped non-junction diode (FDMOS) is proposed to improve reverse conduction and switching characteristics.
Tao Sun   +7 more
doaj   +1 more source

Single-graded CIGS with narrow bandgap for tandem solar cells

open access: yesScience and Technology of Advanced Materials, 2018
Multi-junction solar cells show the highest photovoltaic energy conversion efficiencies, but the current technologies based on wafers and epitaxial growth of multiple layers are very costly. Therefore, there is a high interest in realizing multi-junction
Thomas Feurer   +7 more
doaj   +1 more source

Effects of anisotropic in-plane strains on the phase diagram of BaxSr1-xTiO3 thin film [PDF]

open access: yesJournal Applied Physics 101,024111(2007), 2007
Based on Landau-Devonshire (LD) phenomenological theory, phase diagram of epitaxial BST50/50 thin films on anisotropic in-plane strains is investigated. Different from BaTiO3 thin films, the paraelectric phase appears under the anisotropic misfit strains on BST50/50 thin films at the room temperature.
arxiv   +1 more source

Bulk and surface recombination properties in thin film semiconductors with different surface treatments from time-resolved photoluminescence measurements

open access: yesScientific Reports, 2019
The knowledge of minority carrier lifetime of a semiconductor is important for the assessment of its quality and design of electronic devices. Time-resolved photoluminescence (TRPL) measurements offer the possibility to extract effective lifetimes in the
Thomas P. Weiss   +5 more
doaj   +1 more source

Investigation of Application-Specific Thin Film Sensor Systems with Wireless Data Transmission System

open access: yesProceedings, 2018
Thin-film-based smart telemetric sensors coated onto the surface of washers were developed for the measurement of normal forces in screw connections for industrial applications.
Eike Meyer-Kornblum   +3 more
doaj   +1 more source

Review Article: Stress in thin films and coatings: Current status, challenges, and prospects

open access: yes, 2018
The issue of stress in thin films and functional coatings is a persistent problem in materials science and technology that has congregated many efforts, both from experimental and fundamental points of view, to get a better understanding on how to deal ...
G. Abadias   +9 more
semanticscholar   +1 more source

Gadolinium thin films as benchmark for magneto-caloric thin films [PDF]

open access: yesAIP Advances, 2017
We report on the preparation of Gadolinium thin films by means of sputter deposition on Silicon Oxide wafers. A series of samples with different buffer layers and various substrate temperatures has been produced. The film on an amorphous Tantalum buffer deposited at 773 K shows the highest increase of magnetization during the phase transition at the ...
Helmich, Lars   +5 more
openaire   +4 more sources

Structural, Optical, and Magnetic Properties of Co Doped CdTe Alloy Powders Prepared by Solid-State Reaction Method

open access: yesAdvances in Condensed Matter Physics, 2013
Co doped CdTe powder samples were prepared by solid-state reaction method. In the present work effect of Co doping on structural, optical, and magnetic properties has been studied.
M. Rigana Begam   +6 more
doaj   +1 more source

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