Results 121 to 130 of about 54,913 (297)

Enhanced Dichroic Coloration Through Void‐Particle Induced Interference in Randomly Distributed Cu2O Octahedrons on Glass Substrate

open access: yesLaser &Photonics Reviews, EarlyView.
In randomly distributed Cu2O octahedron particles on a glass substrate, the absence of particles in certain areas generates a distinct “void‐particle induced interference” phenomenon. This effect results in notable reflection and transmission dichroism, characterized by two reflection peaks within the visible spectrum, but only a single transmission ...
Yaqun Han   +5 more
wiley   +1 more source

Carrier Transport in Electrically‐Driven Photonic Crystal Membrane Lasers

open access: yesLaser &Photonics Reviews, EarlyView.
A model to study carrier transport in photonic crystal lasers with a buried heterostructure active region and a lateral current injection scheme is presented. The model identifies unconventional leakage paths which explain low injection efficiencies and enhanced recombination at the p‐doping interface observed experimentally.
Mathias Marchal   +7 more
wiley   +1 more source

Toward Controlled Fluidized Bed – Chemical Vapor Deposition of Boron Nitride: Thermochemical Analysis and Microstructural Investigations

open access: yesAdvanced Materials Interfaces
This study examines the optimization and characterization of stoichiometric and carbon‐free boron nitride interphase coatings using triethylamine borane complex as a precursor in the Fluidized Bed Chemical Vapor Deposition process.
Thomas Da Calva Mouillevois   +6 more
doaj   +1 more source

DFT Modeling and Impedance Spectroscopy Analysis of a High Performance Zirconia‐Based Solar Cell

open access: yesNano Select, EarlyView.
p‐SnS/n‐CdS heterojunction solar cells with Al‐ZnO/i‐ZnO window layers simulated using SCAPS‐1D and impedance spectroscopy enabled tracking of solar cell parameters. The optimal performance (η = 22.76%, Voc = 0.77 V) was achieved with a 5 µm SnS absorber at Rs = 1Ω.cm−2 and Rsh = 10 kΩ.cm−2.
George G. Njema   +7 more
wiley   +1 more source

Progress Toward Efficient Wide‐Gap Cu(In,Ga)(S,Se)2 Thin‐Film Solar Cells

open access: yesProgress in Photovoltaics: Research and Applications, EarlyView.
Wide‐gap Cu (In,Ga)(S,Se)2 thin‐film solar cells are studied in view of their performance, limitations, and opportunities for further optimization. Different sources of open circuit voltage limitations were discussed and weighted. Interface recombination appears the main recombination channel, which however can be influenced heavy alkali treatment ...
Setareh Zahedi‐Azad   +25 more
wiley   +1 more source

Auger electron intensity variations in oxygen-exposed large grain polycrystalline silver [PDF]

open access: yes
Auger electron spectroscopic studies of the grains in oxygen-charged polycrystal-line silver show significant intensity variations as a function of crystallographic orientation.
Davidson, M. R.   +3 more
core   +1 more source

Dynamics of Purification in Cu2O

open access: yesphysica status solidi (b), EarlyView.
Rydberg excitons in Cu2O have been shown to be highly efficient in neutralizing and screening charged impurities, which is referred to as purification. In this manuscript, the dynamics of the purification process are investigated under varying probe exciton‐ and plasma density. The transient absorption of Rydberg excitons is analyzed and five different
Binodbihari Panda   +3 more
wiley   +1 more source

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