5 documents found, page 1 of 1
Interplay of magnetic properties and doping in epitaxial films of h-REFeO3 mult...
Baghizadeh, Ali; Vaghefi, Pegah Mirzadeh; Huang, Xing; Borme, Jerome; Almeida, B. G.; Salak, Andrei N.; Willinger, Marc-Georg; Amaral, Vitor B.Multiferroic materials demonstrating coexistence of magnetic and ferroelectric orders are promising candidates for magnetoelectric devices. While understanding the underlying mechanism of interplaying of ferroic properties is important, tailoring their properties to make them potential candidates for magnetoelectric devices is challenging. Here, the antiferromagnetic Neel ordering temperature above 200 K is rea...
Interplay of magnetic properties and doping in epitaxial films of h-REFeO3 mult...
Baghizadeh, Ali; Vaghefi, Pegah Mirzadeh; Huang, Xing; Borme, Jerome; Almeida, Bernardo; Salak, Andrei N.; Willinger, Marc-Georg; Amaral, Vitor B.Multiferroic materials demonstrating coexistence of magnetic and ferroelectric orders are promising candidates for magnetoelectric devices. While understanding the underlying mechanism of interplaying of ferroic properties is important, tailoring their properties to make them potential candidates for magnetoelectric devices is challenging. Here, the antiferromagnetic Neel ordering temperature above 200 K is rea...
Rear Optical Reflection and Passivation Using a Nanopatterned Metal/Dielectric ...
Lopes, Tomas S.; Cunha, Jose M. V.; Bose, Sourav; Barbosa, Joao R. S.; Borme, Jerome; Donzel-Gargand, Olivier; Rocha, Celia; Silva, RicardoCurrently, one of the main limitations in ultrathin Cu(In,Ga)Se 2 (CIGS) solar cells are the optical losses, since the absorber layer is thinner than the light optical path. Hence,light management, including rear optical reflection, and light trapping is needed. In this paper, we focus on increasing the rear optical reflection. For this, a novel structure based on having a metal interlayer in between the Mo rea...
Conformal and continuous deposition of bifunctional cobalt phosphide layers on ...
Thalluri, Sitaramanjaneva Mouli; Borme, Jerome; Yu, Kang; Xu, Junyuan; Amorim, Isilda; Gaspar, João; Qiao, Liang; Ferreira, Paulo; Alpuim, P.Vertically aligned p-silicon nanowire (SiNW) arrays have been extensively investigated in recent years as promising photocathodes for solar-driven hydrogen evolution. However, the fabrication of SiNW photocathodes with both high photoelectrocatalytic activity and long-term operational stability using a simple and affordable approach is a challenging task. Herein, we report conformal and continuous deposition of...
Highly-ordered silicon nanowire arrays for photoelectrochemical hydrogen evolut...
Thalluri, Sitaramanjaneya Mouli; Borme, Jerome; Xiong, Dehua; Xu, Junyuan; Li, Wei; Amorim, Isilda; Alpuim, P.; Gaspar, Joao; Fonseca, HelderVertically-aligned, highly-ordered silicon nanowire (SiNW) array photocathodes are fabricated employing e-beam lithography followed by deep reactive ion etching (DRIE) of Si. The effect of structural parameters of SiNWs, including wire diameter, length and inter-wire spacing, on their photoelectrocatalytic hydrogen evolution performance has been systematically investigated. Within the range of dimensions under ...