Study of two-phase magnetization reversal in patterned cobalt thin film

Doped hydrogenated nanocrystalline (nc-Si:H) and silicon oxide (nc-SiOx:H) materials grown by plasma-enhanced chemical vapor deposition have favourable optoelectronic properties originated from their two-phase structure. This unique combination of qualities, initially, led to the development of thin-film Si solar cells allowing the fabrication of multijunction devices by tailoring the material bandgap. Furthermore, nanocrystalline silicon films can offer a better carrier transport and field-effect passivation than amorphous Si layers could do, and this can improve the carrier selectivity in silicon heterojunction (SHJ) solar cells. The reduced parasitic absorption, due to the lower absorption coefficient of nc-SiOx:H films in the relevant spectral range, leads to potential gain in short circuit current. In this work, we report on development and applications of hydrogenated nanocrystalline silicon oxide (nc-SiOx:H) from material to device level. We address the potential benefits and the challenges for a successful integration in SHJ solar cells. Finally, we prove that nc-SiOx:H demonstrated clear advantages for maximizing the infrared response of c-Si bottom cells in combination with perovskite top cells.

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A numerical solution of the magnetization reversal modeling in a permalloy thin film using fifth order Runge–Kutta method with adaptive step size control

Physica B Condensed Matter ◽

10.1016/j.physb.2007.08.076 ◽

2008 ◽

Vol 403 (2-3) ◽

pp. 464-468 ◽

Cited By ~ 51

Author(s):

A. Romeo ◽

G. Finocchio ◽

M. Carpentieri ◽

L. Torres ◽

G. Consolo ◽

...

Keyword(s):

Thin Film ◽

Magnetization Reversal ◽

Size Control ◽

Kutta Method ◽

Step Size ◽

Adaptive Step Size ◽

Step Size Control ◽

Runge Kutta Method ◽

Adaptive Step ◽

Fifth Order

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Formation of cobalt hydroxide single-crystal platelets from pulsed laser deposited cobalt thin film

Journal of Alloys and Compounds ◽

10.1016/j.jallcom.2010.03.024 ◽

2010 ◽

Vol 497 (1-2) ◽

pp. 267-271 ◽

Cited By ~ 6

Author(s):

H.Y. Kwong ◽

Y.W. Wong

Keyword(s):

Thin Film ◽

Single Crystal ◽

Pulsed Laser ◽

Cobalt Hydroxide ◽

Cobalt Thin Film

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Influence of dipolar energy on the magnetization reversal in magnetization-modulated thin film systems: Model and experiment

Physical Review B ◽

10.1103/physrevb.83.174423 ◽

2011 ◽

Vol 83 (17) ◽

Cited By ~ 6

Author(s):

Norbert Martin ◽

Ingolf Mönch ◽

Rudolf Schäfer ◽

Jürgen Fassbender ◽

Ludwig Schultz ◽

...

Keyword(s):

Thin Film ◽

Magnetization Reversal ◽

Systems Model

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New simulations use disorder to more accurately depict platinum-cobalt thin film interactions

Scilight ◽

10.1063/1.5082942 ◽

2018 ◽

Vol 2018 (49) ◽

pp. 490005

Author(s):

Adam Liebendorfer

Keyword(s):

Thin Film ◽

Cobalt Thin Film

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A Two-Phase, Transient Model for the Cathode of a PEMFC Using Thin Film-Agglomerate Approach

ASME 2006 Fourth International Conference on Fuel Cell Science, Engineering and Technology, Parts A and B ◽

10.1115/fuelcell2006-97205 ◽

2006 ◽

Author(s):

Hsin-Sen Chu ◽

Shih-Ming Chang

Keyword(s):

Thin Film ◽

Steady State ◽

Layer Thickness ◽

Catalyst Layer ◽

Critical Value ◽

Gas Diffusion ◽

Water Proton ◽

Gaseous Species ◽

Two Phase ◽

Effect Of Water

This study presents a transient, one-dimensional, and two phase model of the proton exchange membrane fuel cell cathode. A thin film-agglomerate approach is applied to the catalyst layer. The model includes the transport of gaseous species, liquid water, proton, and electrochemical kinetics. The effect of water flooding both in the gas diffusion layer and catalyst layer in the cathode are investigated. The effects of agglomerate radius and the catalyst layer thickness on the overall cell performance are also investigated. The results show that the time for fuel cells to reach the steady state is in the order of 10 sec due to the effect of water accumulated both in the porous layer and the membrane. However the time for proton transport is in the order of 0.1 sec. In addition, before the ionic potential reaches the steady state, it would get a critical value. The critical value would depend on the operating cell voltage. There seems to be an optimum in the catalyst layer thickness and agglomerate radius.

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