ITN INFORM: "sub-gap states in (doped) organinc and amorphous oxide semiconductors

At tno

The Eindhoven University of Technology in The Netherlands is offering a fully funded PhD student position within the EU-funded Innovative Training Network (ITN) INFORM ("INterFaces in Opto-electRonic Thin Film Multilayer Devices").  The project of the successful candidate (Early Stage Researcher, ESR) will be the "Measuring sub-gap states in (doped) organic and amorphous oxide semiconductors by photothermal deflection spectroscopy".


Because sub-bandgap absorption features in semiconductors are typically characterized by very low absorption coefficients, it is not possible to resolve them using common optical transmission and reflection measurements. Nevertheless already at very low concentrations they can profoundly influence charge transport properties. Photothermal deflection spectroscopy (PDS) promises the required sensitivity, and is frequently used to characterize (amorphous) silicon films. The research project aims to measure sub-gate states in oxide and organic semiconductor materials using PDS and link the nature of these states to transistor performance (mobility, threshold voltage and stability) and other opto-electronic devices. Insights are expected to lead to insight in charge transport mechanisms and improved transistors, OLEDs, etc.


The overall goal of INFORM is to understand the fundamental electronic processes (charge injection & extraction, charge transfer & transport, charge separation & recombination) that occur at interfaces in organic/organic and inorganic/organic-based multilayer devices. More specifically, we will elucidate how interfacial composition, microstructure, structural and energetic order/disorder and molecular conformation at the interfaces impact the optoelectronic phenomena, how they determine the performance of organic and inorganic/organic hybrid devices and their lifetime, and use this gained knowledge to design more reliable structures that can be manufactured over large areas for the benefit of the European technology space.

The position

We are looking for a highly motivated candidate with a strong academic record holding a Master degree in Physical Chemistry, Applied Physics, or equivalent. Experience in spectroscopy would be an advantage. Candidates will be integrated in an international community of collaborators and will be requested to travel and conduct research for a short period of time in other countries within the network, as well as attend workshops and conferences. Therefore, excellent English skills in speaking, listening, reading and writing are requested.


Your Responsibilities

The main responsibilities of the PhD fellow will be:

• To manage and carry out their research projects
• To participate in research and training activities within the INFORM network
• To write articles for scientific peer reviews, and their PhD thesis
• To participate in meetings of the different INFORM consortium bodies
• To disseminate their research in the scientific community (international conferences) and non-scientific community, by outreach and public engagement


Your Profile

Eligibility criteria of ESR positions:
• Candidates may be of any nationality.
• By the time of recruitment by the host organization, candidates must not have received a doctorate or equivalent.
• By the time of recruitment by the host organization, candidates must be in the first four years (full-time equivalent) of their research career. Full-time research experience is measured from the date when a researcher obtained the degree which formally entitled him or her to embark on a doctorate, either in the country in which the degree was obtained or in the country in which the researcher is recruited or seconded, irrespective of whether or not a doctorate is or was ever envisaged.
• Because the Marie Curie schemes are designed to encourage researcher mobility, there is a mobility criterion for recruitment: By the time of recruitment by the host organization, researchers must not have resided or carried out their main activity (work, studies, etc.) in Cyprus for more than twelve months in the last three years. Short stays, such as holidays, are not included.


Research Fields

Applied Physics - Physical chemistry


Career Stage

Early stage researcher or 0-4 yrs (Post graduate)


Research Profiles

First Stage Researcher (R1)



The successful candidate will be employed for four years at the Department of Applied Physics of the Eindhoven University of Technology and receives a generous financial package plus an additional mobility and family allowance according to the rules for Early Stage Researchers (ESRs) in an EU Marie Skłodowska-Curie Actions Innovative Training Networks (ITN) ( He/She will have access to a set of training activities organized within the INFORM consortium as well as to the PhD program of the Eindhoven University of Technology ( Information about working and living in the Netherlands is available at the site:


For all inquiries, please contact:

Women are especially encouraged to apply.


The main place of work will be the Molecular Materials and Nanosystems (M2N) group in the Department of Applied Physics, but the PhD will conduct two three-month secondments: at Holst Centre, Eindhoven, for transistor fabrication and characterization and at Technion–Israel Institute of Technology for structural characterisation and fabrication of inorganic/organic multilayers. The ESR will also conduct shorter secondments: at the University of Bayreuth for spectroscopic and photocurrent measurements, and at University of Cyprus for Resonant Raman spectroscopy.


Applications should be sent by email to Prof. Rene Janssen ( and/or Prof. Gerwin Gelinck ( Attachments must include:
• A motivation letter, indicating experience

• Up to date CV, including full contact details (postal address, phone number, email address)
• Two reference letters
• A copy of the master degree


Shortlisted candidates will be invited to an interview either in person or by Skype.