PhD and Postdoc Positions

(1) Non-Fullerene Based Ternary Organic Solar Cells

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Promisingly, some new non-fullerene acceptors (NFAs), such as perylene diimide monomers,
dimers and polymers, and indacenodithieno thiophene core small molecules have been
demonstrated to outperform fullerenes in comparative devices. The motivation to replace fullerene
acceptors in BHJ OPVs stems from their synthetic inflexibility, leading to constraints in manipulating
frontier energy levels, as well as poor absorption in the solar spectrum range, and an inherent
tendency to undergo post-fabrication crystallization, resulting in device instability. In this project, we
will focus on fabrication of the high efficiency long-lived non-fullerene based ternary solar cells by
understanding and controlling the nanomorphology as well as transport mechanisms.

Your Tasks:
– Fabrication of the high efficiency non-fullerene based ternary devices by finding the most
proper NIR sensitizer classes.
– Fundamental study of nanomorphology and transport mechanisms.
– Empirical investigation of the tunable VOC origin in the ternary devices.
– Investigation of devices’ lifespan and detailed study of the degradation processes influencing
the device lifetime.

Your Profile / Interest:
– Motivated, independent, reliable, and accurate
– Processing and fabrication of solution-processable thin film devices
– Optical and electrical characterization
– Good command of English in speech and writing

Duration:
50% TV-L E13, Available from February 2018

Please send your application with Curriculum Vitae, certificates of school and degree certificates for
academic degree, motivational letter, a short summary of previous scientific work and ideally with
contact information for two references as a pdf-file to tayebeh.ameri@lmu.de.

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(2) Hybrid Organic-Inorganic Photovoltaics / Photodetectors

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In order to widen the range of applications of organic electronics into photovoltaics and particularly
photosensing, combination of both organic and inorganic electronic systems is a promising strategy.
Hybrid systems possess the unique properties of both organic and inorganic semiconductors. It is
thus of significant interest to develop printed hybrid electronic devices for use in modern
applications. In this project, we will focus on various strategies to control distribution of the inorganic
QDs within the organic host matrix and preserving its initial nanomorphology / transport properties
upon adding inorganic QDs, leading to high performance hybrid optoelectronic devices such as
photovoltaics and photodetectors.

Your Tasks:
– Synthesis of the inorganic QDs.
– Investigation of organic-inorganic hetero-interface and junction properties.
– Fundamental investigation of microstructure and charge transport dynamics.
– Device design and interfaces engineering.
– Investigation of the device stability and lifetime and detailed study of the degradation
processes.

Your Profile / Interest:
– Motivated, independent, reliable, and accurate
– Quantum dots’ synthesis
– Processing and fabrication of solution-processable thin film devices
– Optical and electrical characterization
– Good command of English in speech and writing

Condition:
50% TV-L E13, Available from February 2018

Please send your application with Curriculum Vitae, certificates of school and degree certificates for
academic degree, motivational letter, a short summary of previous scientific work and ideally with
contact information for two references as a pdf-file to tayebeh.ameri@lmu.de.

Download as PDF

(3) Fundamentals of Organic Colloidal Composite Nanoparticles Applicable in Optoelectronics

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 The use of aqueous / alcohol-based nanoparticulate dispersions in printable optoelectronics offers a
promising approach to control the donor: acceptor morphology on the nanoscale with the benefit of
environmentally-friendly, solution-based fabrication. In this project, we will focus on the in-depth
fundamentals investigation of colloidal organic composite NPs in terms of NPs morphology
formation, NPs surface treatment, mesoscale microstructure of NP-incorporated films, and transport
dynamics for application in organic electronic devices.

Your Tasks:
– Establishment of a new portable synthesis setup based on stopped-flow apparatus equipped
with different optical and structural characterization techniques for the in-situ analysis of the
organic colloidal NPs.
– Real time multi-parameter measurements by using the developed setup to gain in-depth
fundamental knowledge on the processes and mechanisms controlling the size and
nanoscale morphology of nominated donor:acceptor composite nanoparticles.
– Investigation of the mesoscale morphology of the NP-incorporated thin films, employing
experimental and theoretical methods.
– Fabrication and characterization of the high performance optoelectronic devices (such as
photovoltaics), based on investigated organic colloidal composite NPs.

Your Profile / Interest:
– Motivated, independent, reliable, and accurate
– Colloidal NPs synthesis
– Processing and fabrication of solution-processable thin film devices
– Optical and electrical characterization
– Good command of English in speech and writing

Duration:
36 months, 75% TV-L E13, Available from February 2018
Please send your application with Curriculum Vitae, certificates of school and degree certificates for
academic degree, motivational letter, a short summary of previous scientific work and ideally with
contact information for two references as a pdf-file to tayebeh.ameri@lmu.de.

Download as PDF

 

Master’s Theses

We are currently looking for Master Theses with the following topics:

(1) Overhaul and Calibration of a Quartz-Crystal Microbalance

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Tasks:
You will analyse, document and modify an already existing QCM device. Mechanical parts of the device have to be renewed and inserted into the already existing LabView code. You will also synthesize and characterize specific samples for calibration of the QCM device.

Requirements:
– Independent work
– Computer knowledge (Backup of hard disk drives)
– Technical understanding
– LabView knowledge

Contact:
michael.beetz@cup.uni-muenchen.de

 

(2) Characterisation of Novel Materials for Thermoelectric Application

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For more information please contact: tayebeh.ameri@lmu.de

 

 

Research Assistant (Hiwi)

(1) Development of Fourier-Transform Photocurrent Spectroscopy (FTPS) Setup

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Photocurrent method based on the Fourier transform and called FTPS (Fourier Transform
Photocurrent Spectroscopy) is a spectroscopic method where monochromator is replaced by FTIR
(Fourier Transform Infrared) spectrophotometer and a solar cell or photoconductive layer is used as
an external detector. This method is used mainly for the thin film photovoltaics, where the quality of
semiconducting layers are monitored. The measurement is much faster and much more sensitive in
near / middle IR regions compared to the usual Incident photon-to-current efficiency (IPCE)
measurement. In this project, we will develop a FTPS setup for organic / hybrid photovoltaics
purpose.

Your Profile:
– Motivated, independent, reliable, and accurate
– Experience on Labview
– Good knowledge of optical and electrical elements
– Good command of English in speech and writing

Please send your application with Curriculum Vitae and ideally with contact information for a
reference as a pdf-file to tayebeh.ameri@lmu.de.

Download as PDF

 

Bachelor’s / Master’s Theses and Research Internships

For more information on writing your Bachelor’s thesis or on a research internship position,
please contact a Ph.D. group member directly.