28/03/2017

PhD student „Distributed feedback (DFB) laser diodes with tunnel junction grown by PAMBE”

This job offer has expired


  • ORGANISATION/COMPANY
    Institute of High Pressure Physics Polish Academy of Sciences
  • RESEARCH FIELD
    PhysicsApplied physics
    PhysicsSolid state physics
  • RESEARCHER PROFILE
    First Stage Researcher (R1)
  • APPLICATION DEADLINE
    26/04/2017 12:00 - Europe/Athens
  • LOCATION
    Poland › Warsaw
  • TYPE OF CONTRACT
    Temporary
  • JOB STATUS
    Full-time
  • HOURS PER WEEK
    40
  • OFFER STARTING DATE
    01/05/2017

We look for a candidate to strengthen the research team of the following project:

“Tunnel junction and its applications for GaN based optoelectronics”

Project is carried out within the TeamTECH programme of the Foundation for Polish Science

 

Project description:

New concept of p-n tunnel junctions and their application in novel optoelectronic GaN-based devices will be investigated. Tunnel junctions may be applied to multicolor LEDs, vertical laser diodes, high power laser diode arrays, efficient solar cells or vertical n-p-n transistors. These devices will be fabricated using plasma assisted molecular beam epitaxy.

The project will involve collaboration between the Institute of High Pressure Physics Polis Academy of Sciences, Faculty of Physics Warsaw University, Faculty of Physics Wrocław University of Technology, Technical Universities of Madrid and Montpellier and TopGaN company, that develops commercial nitride laser diode solutions.

The innovative concept proposed in the project is based on the unique construction of the p-n tunnel junction that provides high tunneling efficiency through the junction minimizing its resistivity. The concept makes use of very high electric fields present in wurtzite crystal structure that modify the nitride tunnel junctions properties.

We will aim at fabrication edge-emitting laser diodes emitting at 480-490 nm (DFB – Distributed Feedback) and cascade multicolor LEDs.  We will investigate the possibility of the application of tunnel junctions in monolithic vertical cavity surface emitting laser diodes (VCSELs).

Scientific results obtained in the Project will be commercialized in TopGaN company that will support the scientists in laser diodes and LEDs processing.

Benefits

We offer:

Scientific experience and work in an international team in the Institute of long gallium nitride GaN-related research. Collaboration with University in Montpellier in France, Universidad Politécnica de Madrid in Spain, University of Waterloo in Canada, Paul-Drude Institut in Berlin. Possibilities to attend conferences. The expected net salary is about 4 650 PLN.

Selection process

We will contact selected candidates and invite them for recruitment talks that are planned on April 27 and 28, 2017.

Offer Requirements

  • REQUIRED EDUCATION LEVEL
    Physics: Master Degree or equivalent
    Engineering: Master Degree or equivalent
  • REQUIRED LANGUAGES
    ENGLISH: Excellent

Skills/Qualifications

Key responsibilities include:

  1. Molecular Beam Epitaxy (MBE) of laser diode structures with tunnel junction

  2. Optical and electrical characterization of laser diodes: electroluminescence, optical gain measurements (differential gain) Hakki-Paoli method, far-field and L-I-V measurements of laser diodes

  3. Theoretical calculations on the carrier injection to the active region, tunnel junction optimization for decreased series resistance

 

Profile of candidates/requirements:

  1. MSc or MA degree in Physics or Engineering sciences
  2. PhD status (enrolled on PhD studies)
  3. Scientific publications will be an asset
  4. Good understanding of solid state physics and quantum mechanics.
  5. Knowledge on the properties of semiconductors of wurzite structure (with electric fields) and knowledge of their characterization methods
  6. Experience in molecular beam epitaxy (MBE) and/or processing will be an asset
  7. Very good command of English (oral and written)
  8. Motivation and passion for experimental work

Specific Requirements

List of required documents:

  1. Application letter
  2. CV
  3. Essay describing scientific interests and achievements of the candidate, including the information about candidate contributions to scientific projects if applicable. Maximum length 3500 characters.
  4. Copy (scan) of the university diploma
  5. Document confirming the PhD status

Work location(s)
1 position(s) available at
Institute of High Pressure Physics Polish Academy of Sciences, Sokołowska 29/37, 01-142 Warsaw
Poland
Warsaw
01-142
Prymasa Tysiaclecia 98

EURAXESS offer ID: 197851