Offres d’emploi

Experimental development of an in-situ photoluminescence setup for photovoltaic applications

Contract type: Intership

Starting date: From now

Duration: 3-6 months

Working Place: Palaiseau

Education: Master / Engineering students

Salary: Paid internship

IPVF in brief

The “Institut Photovoltaïque d’Île-de-France” IPVF aims at becoming one of the main global research, innovation and education center in the field of photovoltaic solar energy. Composed with international well-known industrials, leading in PV industry (EDF, Total, Air Liquide, Horiba and Riber) and academic research teams (CNRS, Ecole Polytechnique), IPVF wants to increase performances and competitiveness of PV solar cells and develop new breakthrough technologies thanks to:

      • A research program : 5 programs and 12 projects
      • Experimental laboratories open to PV actors : more than 70 state-of-the-art tools, in a dedicated IPVF building
      • Education program with a master and PhD students
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Job context

Photoluminescence (PL) is a powerful technique to study a wide range of properties in photovoltaic materials and devices. It consists in analyzing the light radiated by a sample when submitted to a (laser) illumination. This light offers direct insights not only on the material’s composition, but also on the lifetime of photogenerated carriers or on their transport properties. Furthermore, PL measurement only requires an optical access to the sample under scrutiny, and no electrical contact is needed.

PL is thus particularly well suited to perform in situ studies, where the sample being processed or operated, and cannot be put under the usual measurement apparatus. It is notably relevant to study the aging of devices, which are locked in a climatic chamber with controlled environment (temperature, humidity…). However, in situ PL measurement also raises specific challenges, both in terms of instrumentation (how to collect enough signal without disturbing the on-going operations?) and of interpretation (how is the on-going operation modifying the PL signal?)

 

Main missions

The goal of this intership is to start the development of an experimental setup to study in-situ the aging of solar cells by photoluminescence. The first step will be the construction of a setup outside the climatic chamber. The setup will then be tested with standard samples. In parallel, the automation of the experiment will be implemented in order to perform regular measurements over a long period of time.

    Sought profile

    Basic skills in optics (laser collimation…) and programming (Labview…). The intern will be supervised on a weekly basis. He or she will be in charge of the construction of the apparatus. Basic equipment will be provided (laser source, analyzer, computer…) and the intern will be able to order complementary material if needed.

    An excellent chance to learn project development!

    Contact

    Cover letter and résumé to be sent to: daniel.suchet@polytechnique.org
    Specify the title of the offer in the subject line of the email