RT info:eu-repo/semantics/article
T1 Electromagnetic enhancement effect on the atomically abrupt heterojunction of Si/InAs heterostructured nanowires
A1 Pura Ruiz, José Luis
A1 Magdaleno de Benito, Álvaro Javier
A1 Muñoz Segovia, Daniel
A1 Glasser, M.L.
A1 Lugstein, A.
A1 Jiménez López, Juan Ignacio
K1 Nanocables semiconductores (NW)
K1 Semiconductor nanowires (NWs)
AB Semiconductor nanowires (NWs) present a great number of unique optical properties associated with their reduced dimension and internal structure. NWs are suitable for the fabrication of defect free Si/III-V heterostructures, allowing the combination of the properties of both Si and III-V compounds. We present here a study of the electromagnetic (EM) resonances on the atomically abrupt heterojunction (HJ) of Si/InAs axially heterostructured NWs. We studied the electromagnetic response of Si/InAs heterojunctions sensed by means of micro-Raman spectroscopy. These measurements reveal a high enhancement of the Si Raman signal when the incident laser beam is focused right on the Si/InAs interface. The experimental Raman observations are compared to simulations of finite element methods for the interaction of the focused laser beam with the heterostructured NW. The simulations explain why the enhancement is detected on the Si signal when illuminating the HJ and also provide a physical framework to understand the interaction between the incident EM field and the heterostructured NW. The understanding of this process opens the possibility of controlling the light absorption/scattering on semiconductor NWs with the use of heterostructures while taking advantage of the properties of both Si and III-V semiconductors. This is important not only for current NW based photonic nanodevices, such as light sensors, but also for the design of new optoelectronic devices based on NWs
PB AIP Publishing
SN 0021-8979
YR 2019
FD 2019
LK http://uvadoc.uva.es/handle/10324/35098
UL http://uvadoc.uva.es/handle/10324/35098
LA eng
NO Journal of Applied Physics, 2019, Volume 125, Issue 6, 064303
NO Producción Científica
DS UVaDOC
RD 26-abr-2024