News 2015

BOOK CHAPTER: “Quantum transport”





Post-Doctoral Position:

Quantum Electronic Transport Modeling in Nano-Device

III-V core-shell nanowires

Duration: 1 year

Starting date: Now

Scientific project:

There is a growing demand for heterogeneous integration of miniature photonic components with non­photonic elements such as electronic circuits, biosensors… to fabricate compact platforms with various functionalities. Nanowire (NW) photonic devices represent a promising solution to implement this kind of integrated platforms. We focus on nitride materials because of their remarkable optoelectronic properties in the visible to near­ultraviolet (UV) spectral range, well suited for biological applications.

The technology relies on InGaN/GaN core-shell NW LEDs and photodetectors. The post-doc will have to undertake an in-depth theoretical study of optical generation / absorption and electrical transport mechanisms in these nanoscale components. He will start from our recently developed non-equilibrium Green’s function codes for solar cell [1,2]. This electronic transport model considers quantum behaviors such as confinement, tunneling, electron-phonon scattering and electron-photon interactions. With a numerical optimization, it could be more efficient to investigate larger devices with strong interaction. However, it is already possible, assuming interaction only in small parts of the device, to investigate the current generation and/or the photon generation.

Required qualifications:

Applicants must hold a recent Ph.D. in physics, materials science, photonic, photovoltaic or electrical engineering. Expertise in nanoscale devices modeling and/or in nano-optoelectronics is highly desired. The position is fulltime in the framework of the project PLATOFIL funded by the French National Research Agency.

[1]     N. Cavassilas, F. Michelini, M. Bescond, Theoretical comparison of multiple quantum wells and thick-layer designs in InGaN/GaN solar cells, Appl. Phys. Lett. 105, 063903 (2014).

[2]     N. Cavassilas, F. Michelini, M. Bescond, Modeling of nanoscale solar cells: The Green’s function formalism, J. Renewable Sustainable Energy 6, 011203 (2014).