Faites connaître cette offre !
Reference : UMR8520-FRELEF-042
Workplace : VILLENEUVE D ASCQ
Date of publication : Wednesday, November 27, 2019
Type of Contract : FTC Scientist
Contract Period : 16 months
Expected date of employment : 3 February 2020
Proportion of work : Full time
Remuneration : 2643 euros gross salary
Desired level of education : PhD
Experience required : 1 to 4 years
The researcher will join the Terahertz (THz) Photonics Group of the Institute of Electronics of Microelectronics and Nanotechnology in Villeneuve d'Ascq (IEMN). Its mission will be to simulate and manufacture nano-antennas for the mid-infrared (MIR) in the clean room of the Institute. The candidate will have to work on the various stages of the technological process of manufacturing the devices which will then have to be characterized.
The main objective of the activity will be to produce MIR transmitter components (3-12 μm) at low cost and allowing high frequency modulation. Two approaches will be considered: light-emitting diodes (LEDs) and incandescent emitters. In the case of LEDs, the active structure will be composed of III-V semiconductor layers (quantum wells and barriers) allowing spontaneous inter-subband optical transitions in the wavelength ranges envisaged. Incandescent emitters will be composed of resistive nanoribbons. These two types of components will include nano-antennas adapted to the wavelengths of the MIR in order to optimize their radiation: Smith-Purcell effect and directivity.
The growth of III-V materials will be made at the University of Leeds as part of an international collaboration. The first manufacturing steps will be carried out in the clean room of the C2N laboratory. At IEMN, the recruited researcher will be involved in the electromagnetic simulation of nano-antennas. These will be optimized to meet specific specifications: impedance, quality coefficient, directivity ... Then the recruited researcher will be involved in the development of the manufacturing process of nano-antennas in clean room and their characterization. The nano-antennas will be realized thanks to a process of electron lithography and metallization by evaporation under vacuum which will be developed and optimized.
The components will then be electrically characterized to verify their functionality. These measures will be necessary to carry out a feedback to the previous technological steps. Electro-optical measurements will then be made in the various laboratories involved to evaluate the performance of the components: radiated power, spectrum, radiation pattern, modulation bandwidth, etc.
The candidate must have a doctoral thesis and specialized in micro - nanotechnology with knowledge of nanoscale components for optoelectronic, microwave and THz applications.
He must have skills in the electromagnetic simulation of antennas with simulation software like CST Microwave Studio, HFSS or Lumerical.
He must have good experience in cleanroom component technology and have successfully completed the various technological steps involved in the fabrication of semiconductor devices.
The candidate will join the THz Photonics Group of IEMN which is specialized in THz and MIR components and devices. The group has know-how in simulation, characterization and technological fabrication of devices.
The candidate will work as part of a consortium of the ANR project IRENA grouping the Institute of Optics (IOGS), the University Paris-Sud (laboratory C2N) and IEMN.
The activity will be partly devoted to the electromagnetic simulations of the antennas and partly to the work in clean room under the responsibility of Emilien Peytavit responsible for the activities related to the technology for the THz Photonics group. It will also include the realization of measurements of devices made under the responsibility of Stefano Barbieri and Jean-François Lampin.
Specific clean room safety training will be provided and the researcher will be introduced to the techniques of using the various available technology resources.
Constraints and risks
work in clean rooms
We talk about it on Twitter!