14/07/2018
Marie Skłodowska-Curie Actions

15 PhD Positions on Organic Semiconductors


  • ORGANISATION/COMPANY
    University of Bayreuth
  • RESEARCH FIELD
    Chemistry
    Engineering
    Physics
  • RESEARCHER PROFILE
    First Stage Researcher (R1)
  • APPLICATION DEADLINE
    31/12/2018 00:00 - Europe/Brussels
  • LOCATION
    Multiple locations, see work locations below.
  • JOB STATUS
    Full-time
  • HOURS PER WEEK
    40
  • EU RESEARCH FRAMEWORK PROGRAMME
    H2020 / Marie Skłodowska-Curie Actions
  • MARIE CURIE GRANT AGREEMENT NUMBER
    812872

TADFlife - Using the smart matrix approach to enhance TADF-OLED efficiency and lifetime

Applications are invited for 15 PhD positions (“Early Stage Researchers”) to be funded by the to be funded by the Marie-Sklodowska-Curie Innovative Training Network TADFlife within the Horizon 2020 Programme of the European Commission.

TADFlife will train a cohort of young PhD scientists within a multidisciplinary research program conceived from a simple industrial need, i.e. high performance blue organic light-emitting diodes (OLEDs) which also have long lifetime. This is not an easy problem to solve, as although OLEDs are now ubiquitous in phone and TV displays, the blue pixels still operate far below the performance and efficiency of the red and green to achieve acceptable lifetime. TADFlife will follow a new approach to solve this problem using the latest generation of OLED materials, thermally activated delayed fluorescent (TADF) emitters. Through a device simulation development program, which incorporates a high degree of basic photophysics input, predictive models of TADFOLED performance and lifetime will be built and used to design new TADF emitters and hosts which overcome the degradation pathways identified from the model predictions. These new materials will then be synthesised. By introducing the concept of the smart matrix, the complex guest host interactions of TADF materials will be included and used to optimise emitter orientation to maximise light out-coupling from devices. Quantum chemistry will use the photophysics results to direct new materials design in tandem with the model predictions. Taking this dual approach, we believe will lead to solutions so far unobtainable for OLEDs. This highly interlinked program gives a fantastic opportunity for the brightest young chemists, spectroscopists, theoreticians and device physicists to work together, learn complimentary skills that will be in high demand from European OLED industries. Leading experts will give courses on core scientific skills along with soft skills and international secondments will be offered, all to properly prepare them for their future careers. They will be part of a network answering a real industrial need and help to secure the future of our European OLED industries in the global OLED materials arena.

The network comprises universities and companies in Germany, UK, Italy, Ukraine, Lithuania, Netherlands and Switzerland. The positions include interdisciplinary training, internships in European and Non-European countries, summer schools and yearly international meetings.

Applicants for the PhD positions must not yet been awarded a PhD degree and must be in the first 4 years (full-time equivalent) of their research careers prior to the recruitment. All applicants must not have resided or carried out their main activity (work, studies, etc.) in the country of the organization they are applying to for more than 12 months in the 3 years immediately prior to the recruitment.

Application including relevant documents (CV, motivation letter, names of referees, etc.)  to be sent to the respective contacts for the individual positions as detailed below.

* All monthly salaries listed are approximate gross amounts, including employer costs of employee according to MSCA ITN rules. Net salaries will differ.

 

Positions currently available:

 

ESR5. Excited state engineering: environmental effects

Working in close contact with experimentalists, the PhD student will investigate mainly from a theoretical perspective the excited state properties and photophysics of TADF systems. Special attention will be devoted to environmental effects: polarity, polarizability, viscosity etc.Parametric Hamiltonians will be proposed, to be implemented and validated against experiment and first-principle calculations.

Requirements: M.Sc. in Chemical or Physical Sciences or equivalent graduation. Computer programming skills, solid knowledge basis in quantum mechanics applied to chemical problems. Proof of English proficiency as communication and teaching language (e.g. TOEFL or similar test, not for native speakers).

Start date (planned): 01. Oct. 2018 – 28. Feb. 2019

Application deadline: 15 August 2018

Monthly Salary*: 3410€ + 600€ Mobility allowance + 250€ Family allowance

Contact

Prof. Anna Painelli

Parma University

Department of Chemistry, Life Science

and Environmental Sustainability

anna.painelli@unipr.it, cristina.sissa@unipr.it

 

 

 

ESR6. From isolated molecules to materials: relaxation of excited states

Working in close contact with experimentalists, the PhD student will investigate mainly from a theoretical perspective the excited state dynamics of TADF systems towards the understanding of relaxation pathways in complex matrices. Parametric Hamiltonians describing the TADF dye, developed and parametrized against experiments and first principle calculations, will be coupled to a dissipative bath to describe the fate of photoexcited states

Requirements: M.Sc. in Chemical or Physical Sciences or equivalent graduation. Computer programming skills, solid knowledge basis in quantum mechanics also applied to open quantum systems. Proof of English proficiency as communication and teaching language (e.g. TOEFL or similar test, not for native speakers).

Start date (planned): 01. Oct. 2018 – 28. Feb. 2019

Application deadline: 15 August 2018

Monthly Salary*: 3410€ + 600€ Mobility allowance + 250€ Family allowance

Contact

Prof. Anna Painelli

Parma University

Department of Chemistry, Life Science

and Environmental Sustainability

anna.painelli@unipr.it, cristina.sissa@unipr.it

 

 

 

ESR7. Analysis and control of TADF emitter orientation in OLEDs

The PhD student will investigate the orientation distribution of TADF emitters and hosts, and how they mutually affect each other, in thin films and devices. The goal is to understand the role of host polarity, glass transition temperature and shape of the host as well as the composition of the guest-host system on the TADF emitter orientation in organic thin films and to transfer this knowledge to OLED stacks. The candidate will apply optical and electrical spectroscopies, work on thin film deposition and study complex film formation and learn to use these tools to better tailoring TADF based OLEDs.

Requirements: M.Sc. in Physics or Materials Science or equivalent graduation. Proof of English proficiency as communication and teaching language throughout TADFlife is English (e.g. TOEFL or similar test, not for native speakers).

Start date (planned): 1 Nov 2018 - 31 March 2019

Application deadline: 15 Sept 2018

Monthly Salary*: 3170€ + 600€ Mobility allowance + 250€ Family allowance

Contact

Prof. Wolfgang Brütting

University of Augsburg

Institute of Physics

bruetting@physik.uni-augsburg.de

 

 

 

ESR8. Impact of TADF emitter-host interactions on OLED efficiency and lifetime

The PhD student will investigate the role of materials parameters and device stack layout for the efficiency of TADF OLEDs. The candidate will work on OLED fabrication using vapor deposition, the characterization of OLEDs using steady-state and transient electrical and optical methods, and perform a comprehensive efficiency analysis. They will furthermore use numerical simulation to describe TADF based devices and learn how to analyze reversible quenching and irreversible efficiency losses and assign them to different origin in a TADF OLED.

Requirements: M.Sc. in Physics or Materials Science or equivalent graduation. Proof of English proficiency as communication and teaching language throughout TADFlife is English (e.g. TOEFL or similar test, not for native speakers).

Start date (planned): 1 Nov 2018 - 31 March 2019

Application deadline: 15 Sept 2018

Monthly Salary*: 3170€ + 600€ Mobility allowance + 250€ Family allowance

Contact

Prof. Wolfgang Brütting

University of Augsburg

Institute of Physics

bruetting@physik.uni-augsburg.de

 

 

 

ESR9. Probing charge carrier trapping in TADF-based host-guest materials

The PhD student will use thermally-stimulated luminescence and thermally –stimulated current measurements on thin organic films to elucidate how film composition, polarity of the matrix material used in the film and OLED-operation affect charge carrier trapping in host-guest TADF-based OLEDs. These techniques will also be used for electrically-induced degradation study where charge-carrier trap evolution can be probed in the course of the TAFD device electrical stressing.

Requirements: M.Sc. in Physics or Materials Science or equivalent graduation. Proof of English proficiency, as communication and teaching language throughout TADFlife is English (e.g. TOEFL or similar test, not for native speakers). Basic knowledge of Ukrainian or Russian language preferred but not necessary.

Start date (planned): 15 October 2018 - 28 Feb. 2019

Application deadline: 15 September 2018

Monthly Salary*: 2315€ + 600€ Mobility allowance + 250€ Family allowance

Contact

Prof. Andrey Kadashchuk

Institute of Physics

Kiev

kadash@iop.kiev.ua

 

 

 

ESR10. Study of guest host interactions and effects on TADF efficiency

The PhD student will investigate the excited state processes occurring in TADF emitters and how they are affected by interactions with the host. Optical spectroscopy including photoinduced absorption and time resolved DF measurements will be used. Correlations between rISC rate and PLQY with host interactions and orientation of the emitter will be made and modelled using various theoretical techniques. Optical results will be compared to device performance to fully understand the role of guest host interactions in TADF OLEDs.

Requirements: M.Sc. in Chemical or Physical Sciences or equivalent graduation. Proof of English proficiency as communication and teaching language throughout TADFlife is English (e.g. TOEFL or similar test, not for native speakers).

Start date (planned): 01. Oct. 2018 – 28. Feb. 2019

Application deadline: 15 August 2018

Monthly Salary*: 4570€ + 600€ Mobility allowance + 250€ Family allowance.

Contact

Prof. Andrew Monkman

Durham University

Department of Physics

a.p.monkman@durham.ac.uk

 

 

 

ESR11. Elucidation of quenching mechanisms and effects on device lifetime

The PhD student will investigate the excited state processes occurring in TADF devices, correlating them to photophysical measurements and from this elucidate quenching mechanisms, especially charge quenching of excited states. Combined optical and electrical spectroscopy in devices will be used such as charge induced absorption and time resolved EL measurements. Correlations between rISC rate, PLQY, polaron quenching and device lifetime will be investigated.

Requirements: M.Sc. in Chemical or Physical Sciences or equivalent graduation. Proof of English proficiency as communication and teaching language throughout TADFlife is English (e.g. TOEFL or similar test, not for native speakers).

Start date (planned): 01. Oct. 2018 – 28. Feb. 2019

Application deadline: 15 August 2018

Monthly Salary*: 4570€ + 600€ Mobility allowance + 250€ Family allowance.

Contact

Prof. Andrew Monkman

Durham University

Department of Physics

a.p.monkman@durham.ac.uk

 

 

 

ESR12. Probing photophysical and charge transport properties for optimization of guest(TADF)-host interactions

The PhD student will investigate the impact of different (polarity) hosts on the TADF efficiency, charge carrier drift mobility in the guest-host films. He will be trained on the evaluation of structure-property relationship of organic compounds by employing steady-state, time-resolved and pump-probe spectroscopy tools, various charge transport methods (e.g. CELIV). The student will learn how this information can be used for enhancing the performance of OLEDs based on TADF.

Requirements: M.Sc. in Chemical or Physical Sciences or equivalent graduation. Proof of English proficiency as communication and teaching language (e.g. TOEFL or similar test, not for native speakers).

Start date (planned): 01. Oct. 2018 – 28. Feb. 2019

Application deadline: 15 August 2018

Monthly Salary: 2370€ + 600€ Mobility allowance + 250€ Family allowance.

Contact

Prof. Saulius Juršėnas

Vilnius University

Institute of Photonics and Nanotechnology

saulius.jursenas@ff.vu.lt

 

 

 

ESR13. Device efficiency and lifetime

The PhD student will investigate and optimize the stability and efficiency of TADF containing OLEDs. For this, he will make efficiency and lifetime optimized devices containing the project materials. Through OLED characterization measurements, he will elucidate the role of the various parameters in OLED manufacturing on device performance and the processes leading to device degradation..

Requirements: M.Sc. in Chemical or Physical Sciences or equivalent graduation. Proof of English proficiency as communication and teaching language (e.g. TOEFL or similar test, not for native speakers). Knowledge of German is wellcome.

Start date (planned): 01. Oct. 2018 – 28. Feb. 2019

Application deadline: 15 August 2018

Monthly Salary: 2370€ + 600€ Mobility allowance + 250€ Family allowance.

Contact

Christof Pflumm

Merck

michaela.fischer@uni-bayreuth.de

 

 

ESR15. Mixed excitonic-electronic device modelling for TADF OLED characterization

The PhD student will devise efficient ‘benchtop’ R&D methods and tools for the characterization of OLED materials and devices in the context of TADF emitters. For this purpose, a range of routine characterizations will be developed that are based on combined simulation and measurement technology, including e.g. time-resolved photoluminescence and electroluminescence, angular luminescence spectroscopy, electrical impedance spectroscopy. Assess TADF device properties using simulation based on extracted material parameters.

Requirements: M.Sc. in Physics or Engineering or Computational Science. Proof of English proficiency.

Start date (planned): 1. October 2018

Application deadline: n.a.

Monthly Salary*: 3960€ + 600€ Mobility allowance + 250€ Family allowance.

Contact

Prof. Beat Ruhstaller

Fluxim Inc.

beat.ruhstaller@fluxim.com

 

 

 

 

 

 

 

 

 

 

 

Offer Requirements

Specific Requirements

Applicants for the PhD positions must not yet been awarded a PhD degree and must be in the first 4 years (full-time equivalent) of their research careers prior to the recruitment. All applicants must not have resided or carried out their main activity (work, studies, etc.) in the country of the organization they are applying to for more than 12 months in the 3 years immediately prior to the recruitment

Map Information

Work location(s)
3 position(s) available at
University of Bayreuth
Germany
Bayreuth
1 position(s) available at
University of St. Andrews
United Kingdom
St. Andrews
2 position(s) available at
Parma University
Italy
Parma
2 position(s) available at
University of Augsburg
Germany
Augsburg
1 position(s) available at
Institute of Physics
Ukraine
Kiev
2 position(s) available at
Durham University
United Kingdom
Durham
1 position(s) available at
Vilnius University
Lithuania
Vilnius
1 position(s) available at
Merck
Germany
Darmstadt
1 position(s) available at
Simbeyond
Netherlands
Eindhoven
1 position(s) available at
Fluxim
Switzerland
Winterthur

EURAXESS offer ID: 324499