Results 91 to 100 of about 49,137 (305)

Electrochemical Pathways for Nitrate Conversion to Ammonia: From Environmental Challenges to Ammonia Economy

open access: yesAdvanced Functional Materials, EarlyView.
This perspective presents recent advances in electrocatalytic nitrate reduction, focusing on reaction mechanisms, catalyst design, and electrolyzer configurations. Key challenges in selectivity, stability, and practical wastewater treatment are highlighted, while future directions for advancing sustainable ammonia synthesis and nitrate remediation are ...
Xintong Li   +9 more
wiley   +1 more source

Recent Progress of Ion-Modified TiO2 for Enhanced Photocatalytic Hydrogen Production

open access: yesMolecules
Harnessing solar energy to produce hydrogen through semiconductor-mediated photocatalytic water splitting is a promising avenue to address the challenges of energy scarcity and environmental degradation.
Dongqiu Zhao   +5 more
doaj   +1 more source

Defect, Diffusion and Dopant Properties of NaNiO2: Atomistic Simulation Study

open access: yesEnergies, 2019
Sodium nickelate, NaNiO2, is a candidate cathode material for sodium ion batteries due to its high volumetric and gravimetric energy density. The use of atomistic simulation techniques allows the examination of the defect energetics, Na-ion diffusion and
Ruwani Kaushalya   +3 more
doaj   +1 more source

Investigation of Spin-on Dopants and Curing Temperature Effect on Dopant Activation

open access: yesApplied Physics Research, 2019
Spin-on dopant technique has been investigated in the paper. The boron and phosphorus were used as p- and n-type dopant sources and were deposited on silicon substrates, followed by the baking process to evaporate the solvents from spin-on dopant layers. The standard drive-in process was applied to diffuse and activate the dopants.
Bhavink Patel   +5 more
openaire   +2 more sources

Two opposite hysteresis curves in semiconductors with mobile dopants [PDF]

open access: yes, 2013
Semiconductors with mobile dopants (SMDs), which are distinct from conventional semiconductors, exhibit hysteretic current-voltage curves. The fundamental feature of this hysteresis curve is that it exhibits two oppositely rotating directions, whose ...
Shin Buhm Lee   +3 more
core   +1 more source

Tetracyclic π‐Extended Multi‐Resonant TADF Emitters for Green PSF‐OLEDs With 37.7% EQE and BT.2020‐Compatible Top‐Emitting Devices

open access: yesAdvanced Functional Materials, EarlyView.
Ultra‐narrow green multi‐resonance thermally activated delayed fluorescence emitters have been developed by linear π‐extension strategy using tetracyclic naphtho[2,3‐b]benzofuran unit. The resulting phosphorescence‐sensitized OLEDs achieve a maximum external quantum efficiency of 37.7% in the bottom‐emitting architecture, while the complementary top ...
Eo Jin Jeon   +7 more
wiley   +1 more source

Dopant mapping for the nanotechnology age

open access: yesNature Materials, 2003
The push for smaller microelectronics poses many challenges, such as locating dopant atoms in semiconductors with ever-increasing precision. The ideal technique must be able to detect single dopants with atomic resolution, and identify their electronic state. Neither is an easy task.
Castell, M, Muller, D, Voyles, P
openaire   +3 more sources

Dopant Metrology in Advanced FinFETs [PDF]

open access: yes, 2012
6 pages, 3 ...
Lansbergen, G.   +6 more
openaire   +4 more sources

Stabilization of semiconductor surfaces through bulk dopants [PDF]

open access: yes, 2013
We show by employing density-functional theory (DFT) calculations (including a hybrid functional) that ZnO surfaces can be stabilized by bulk dopants.
Hofmann, O., Moll, N., Xu, Y., Rinke, P.
core   +1 more source

Modal Analysis of Light Propagation, Polarization and Diffraction by Cholesteric Liquid Crystal Layers

open access: yesAdvanced Functional Materials, EarlyView.
The analysis of optical eigenmodes in chiral liquid crystal with perpendicular or tilted helical axis, and their correspondence with the external medium, leads to an intuitive understanding of the angle and wavelength dependency of transmissive and reflective diffraction.
Ke Xu   +5 more
wiley   +1 more source

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