Zobrazeno 1 - 10
of 46
pro vyhledávání: '"D L, Dheeraj"'
Autor:
Junxi Wang, Xiaoyan Yi, Helge Weman, Jinmin Li, Zhiqiang Liu, Yang Li, D L Dheeraj, Yunyu Wang, Meng Liang
Publikováno v:
Crystal Growth & Design. 19:5516-5522
III-Nitride epitaxy is deeply dependent on the substrate and is difficult to grow on amorphous substrates because of the lattice mismatch limits. In this paper, graphene is employed as a buffer lay...
Autor:
Bjørn-Ove Fimland, Dong Chul Kim, A. Mazid Munshi, Jungtae Nam, Dong Hoon Shin, Keun Soo Kim, Sangwook Lee, Anjan Mukherjee, D L Dheeraj, Hoyeol Yun, Helge Weman
Publikováno v:
ACS Applied Materials & Interfaces. 11:13514-13522
We developed a new technique to fabricate single nanowire devices with reliable graphene/nanowire contacts using a position-controlled microtransfer and an embedded nanowire structure in a planar junction configuration. A thorough study of electrical
Autor:
Bjørn-Ove Fimland, A. Mazid Munshi, Dingding Ren, Julie S. Nilsen, Helge Weman, J F Reinertsen, Antonius T. J. van Helvoort, Anders Gustafsson, D L Dheeraj, Chengjun Jin, Junghwan Huh
Publikováno v:
Nano Letters. 16:1201-1209
Ternary semiconductor nanowire arrays enable scalable fabrication of nano-optoelectronic devices with tunable bandgap. However, the lack of insight into the effects of the incorporation of Vy element results in lack of control on the growth of ternar
Autor:
D L Dheeraj, A. M. Munshi, Bjørn-Ove Fimland, M.B. Erlbeck, Helge Weman, A. T. J. van Helvoort, Junghwan Huh, Vidar Tonaas Fauske, Dong Chul Kim
Publikováno v:
Journal of Microscopy. 262:183-188
For the development of electronic nanoscale structures, feedback on its electronic properties is crucial, but challenging. Here, we present a comparison of various in situ methods for electronically probing single, p-doped GaAs nanowires inside a sca
Autor:
A. Mazid Munshi, Dong Chul Kim, Antonius T. J. van Helvoort, Junghwan Huh, Sangwook Lee, Hanne Kauko, Helge Weman, Hoyeol Yun, D L Dheeraj, Bjørn-Ove Fimland
Publikováno v:
Nano Letters. 15:3709-3715
Device configurations that enable a unidirectional propagation of carriers in a semiconductor are fundamental components for electronic and optoelectronic applications. To realize such devices, however, it is generally required to have complex proces
Autor:
A. T. J. van Helvoort, Dong Chul Kim, Heike Riel, A. M. Munshi, D L Dheeraj, O.M. Christoffersen, G. Signorello, Bjørn-Ove Fimland, Helge Weman
Publikováno v:
Journal of Crystal Growth. 378:532-536
We report on the growth, structural and electrical characterizations of Be-doped GaAs nanowires (NWs) grown by the Au- and Ga-assisted vapour–liquid–solid techniques using molecular beam epitaxy. The growth rate of Be-doped GaAs NWs grown by the
Autor:
Bjørn-Ove Fimland, Antonius T. J. van Helvoort, J Todorovic, Helge Weman, D L Dheeraj, Abdul Mazid Munshi
Publikováno v:
Journal of Crystal Growth. 372:163-169
Accomplishing control of the crystal phases in III–V semiconductor nanowires (NWs) is important for applications in future advanced nano-devices. In this work, we report on the growth of both zinc blende (ZB) and wurtzite (WZ) GaAs in self-catalyze
Autor:
Bjørn-Ove Fimland, A. Mazid Munshi, Giorgio Divitini, Caterina Ducati, Antonius T. J. van Helvoort, Vidar Tonaas Fauske, Helge Weman, Junghwan Huh, D L Dheeraj
Publikováno v:
Nano letters. 16(5)
Here we report on the heat-induced solid-state replacement of GaAs by Au in nanowires. Such replacement of semiconductor nanowires by metals is envisioned as a method to achieve well-defined junctions within nanowires. To better understand the mechan
Publikováno v:
Journal of Crystal Growth. 312:2073-2077
GaAs nanowires (NWs) are grown on GaAs (1 1 1) B substrates in a molecular beam epitaxy system, by Au-assisted vapor–liquid–solid growth. We compare the characteristics of NWs elaborated with As 2 or As 4 molecules. In a wide range of growth temp
Autor:
Bjørn-Ove Fimland, Helge Weman, Jean-Christophe Harmand, Hailong Zhou, Gilles Patriarche, D L Dheeraj
Publikováno v:
Journal of Crystal Growth. 311:1847-1850
GaAs nanowire (NW) heterostructures with four GaAsSb inserts were grown on GaAs(1 1 1)B substrates by Au-assisted molecular beam epitaxy (MBE). Structural characterization of the NWs showed that the transition between the GaAs and GaAsSb heterojuncti