1. Strong Hot Carrier Effects in Single Nanowire Heterostructures
- Author
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Alexander A. Balandin, Leigh M. Smith, Chennupati Jagadish, Howard E. Jackson, Fariborz Kargar, Iraj Abbasian Shojaei, Xiaoming Yuan, Hark Hoe Tan, Samuel Linser, Philippe Caroff, Giriraj Jnawali, and Nadeeka Wickramasuriya
- Subjects
Materials science ,Condensed matter physics ,Phonon ,Mechanical Engineering ,Shell (structure) ,Nanowire ,Physics::Optics ,Bioengineering ,Heterojunction ,02 engineering and technology ,General Chemistry ,Condensed Matter::Mesoscopic Systems and Quantum Hall Effect ,021001 nanoscience & nanotechnology ,Condensed Matter Physics ,Condensed Matter::Materials Science ,symbols.namesake ,Thermalisation ,symbols ,General Materials Science ,Transient (oscillation) ,Longitudinal optical ,Rayleigh scattering ,0210 nano-technology - Abstract
We use transient Rayleigh scattering to study the thermalization of hot photoexcited carriers in single GaAs0.7Sb0.3/InP nanowire heterostructures. By comparing the energy loss rate in single core-only GaAs0.7Sb0.3 nanowires which do not show substantial hot carrier effects with the core-shell nanowires, we show that the presence of an InP shell substantially suppresses the longitudinal optical phonon emission rate at low temperatures which then leads to strong hot carrier effects.
- Published
- 2019