Results 101 to 110 of about 171,021 (301)

Spatially Resolved Observation of Ferroelectric‐to‐Paraelectric Phase Transition in a Two‐Dimensional Halide Perovskite

open access: yesAdvanced Materials, EarlyView.
Temperature‐dependent nanoscale ferroelectric domain evolution and the ferroelectric‐to‐paraelectric phase transition in 2D halide perovskites is visualized using piezoresponse force microscopy. The phase transition initiates locally below the Curie temperature and progressively propagates as paraelectric regions expand.
Tae Hyun Jung   +14 more
wiley   +1 more source

Interfacial Passivation for Enhanced Moisture Stability of Perovskite Solar Cells: Ammonium or Sulfonium?

open access: yesAdvanced Materials Interfaces, EarlyView.
By directly comparing the impact of dual interfacial passivation by ammonium‐, sulfonium‐ and sulfoxonium‐based cations on the performance and stability of triple cation metal halide perovskite solar cells, it is found that it is the exact molecular structure of the cation, rather than the nature of the onium that influences the efficacy of passivation
Oscar Telschow   +9 more
wiley   +1 more source

Global Existence and Blow-Up of Solutions for a Quasilinear Parabolic Equation with Absorption and Nonlinear Boundary Condition

open access: yesInternational Journal of Analysis and Applications, 2014
This paper deals with the evolution r-Laplacian equation with absorption and nonlinear boundary condition. By using differential inequality techniques, global existence and blow-up criteria of nonnegative solutions are determined.
Iftikhar Ahmed, Chunlai Mu, Pan Zheng
doaj   +2 more sources

Plasmonic‐Strain Engineering of Quantum Emitters in Hexagonal Boron Nitride

open access: yesAdvanced Materials Interfaces, EarlyView.
Hexagonal boron nitride (hBN) defects attract interest for single‐photon emission in quantum technologies. This study presents an hBN‐gold nanocone platform to engineer emission centers. The findings reveal emission overlap with gold fluorescence, complicating attribution.
Anuj Kumar Singh   +13 more
wiley   +1 more source

Phase Distribution in Quasi‐2D Dion Jacobson Perovskite Dictates Ultrafast Energy Transfer and Directional Charge Transport

open access: yesAdvanced Materials Interfaces, EarlyView.
An efficient charge transfer and energy transfer at heterostructure interfaces is vital for optoelectronics. Quasi‐2D perovskites with varying layer thicknesses can create multiple interfaces, hindering charge transfer and energy transfer. Cesium Iodide (CsI) can help to redistribute these phases strategically, thereby enhancing energy transfer and ...
Nilesh G. Saykar   +5 more
wiley   +1 more source

Blow-Up Phenomena for Nonlinear Reaction-Diffusion Equations under Nonlinear Boundary Conditions

open access: yesJournal of Function Spaces, 2016
This paper deals with blow-up and global solutions of the following nonlinear reaction-diffusion equations under nonlinear boundary conditions: g(u)t=∇·au∇u+fu  in  Ω×0,T,  ∂u/∂n=bx,u,t  on  ∂Ω×(0,T),  u(x,0)=u0(x)>0,  in  Ω¯, where Ω⊂RN  (N≥2) is a ...
Juntang Ding
doaj   +1 more source

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