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Institute of Solid State Physics
A bachelor project serves as an introduction to scientific research. During this project, 4 weeks are spent in a research laboratory (150 hours, 6 ECTS). At the conclusion of the research, a report about the results is written and a 20 minute public presentation is given. The time necessary to write the report and prepare the presentation are included in the 150 hours.
A true scientific publication must be original work; it should describe scientific results that have never been reported before. Ideally, a bachelor report should have the character of a scientific publication. A bachelor report is not intended to be a review of work done by others.
A scientific publication should begin with a short and clear description of what was done, why it was done, and what the main results are. It is not a novel where the reader should be kept in suspense until the last page. Tell the ending on the first page and then use the rest of the report to fill in the details.
After the initial statement of your own results, give the reader some background information. All scientific projects build on the work of others. You should make it clear what the state-of-the-art was at the start of your project. This section should be brief, no more than about 3 pages. Provide the reader with references to books or articles that describe your research topic in more detail.
The bulk of a bachelor report should contain a discussion of the scientific issue you attempted to resolve, the methodology you used, a presentation of the data, and a discussion of the results. The recommened length of the report is 15-25 pages.
The TU will scan all master and PhD theses electronically for plagiarism. While there is currently no plan to systematically scan the bachelor theses, everything in electronic form might be scanned at some time. It should be clear from the way the references are placed which ideas you claim as your own and which you have taken from others.
To protect the privacy of students, the university does not publish a list of student names or email addresses. However, when a bachelor student works in our institute, we typically list their names and email addresses on our institute website. This makes it easier for members of the institute to contact each other. If you do not want to be listed on the website, please inform the secretary when your project starts.
A list of possible bachelor projects is given below. There is a certain flexibility in defining bachelor projects. You may propose the topic of a bachelor project to a member of the scientific staff. If you have questions about bachelor projects at the Institute of Solid State Physics, please contact Peter Hadley.
Some bachelor reports that have been completed in our institute can be found here.
Richtlinien zur Erstellung einer Bachelorarbeit im Bachelorstudium Technische Physik
There are different short projects available with topics on organic solar cells and photodetectors, polymer morphology, novel transparent-electrode concepts, wide-bandgap semiconductor synthesis and measurement automation.
Investigation of the morphology of organic films with atomic force microscopy
On existing organic thin film samples (hexaphenyl on mica) the morphology of the films should be investigated by atomic force microscopy (AFM). From the island density and the island size distribution one can obtain information on the particular nucleation process. These investigations are relevant for the use of organic films in modern organic electronics.
Growth of organic films by molecular beam deposition
Organic electronics is a contemporary issue. The understanding of the growth of organic molecules is still in its infancy. In this bachelor work indigo molecules should be deposited on silicon oxide under well-defined conditions in ultra-high vacuum. The films will be investigated by thermal desorption spectroscopy and atomic force microscopy. This work will be carried out under the assistance of a Phd student.
Measurement of the transistor characteristics with a Dual Source meter
In the context of our research on organic electronics the electrical properties of organic transistors have to be determined output characteristics, transfer characteristics). In this bachelor work a new Dual Source Meter should be commissioned and tested by means of commercial transistors.
Accounting for van der Waals interactions at metal-organic interfaces
Die Beschreibung von van der Waals Wechselwirkungen ist eine der zentralen Herausforderungen für die quantenmechanische Simulation von schwach gebundenen Materialien, wie z.B. organischen Halbleitern. Die zumeist verwendete Dichtefunktionaltheorie versagt hier typischerweise völlig. Eine unlängst mit dem Fritz Haber Institut in Berlin entwickelte Methode scheint dieses Problem für Grenzflächen zwischen organischen Halbleitern und Metallen zu lösen und könnte das Feld revolutionieren. Ziel der (anspruchsvollen) Bachelorarbeit ist es, die Methode für ausgewählte und experimentell gut charakterisierte Systeme zu testen.
The Seebeck effect describes the voltage that appears across a semiconductor when there is a thermal gradient. The sign of the voltage depends on whether the semiconductor is n-type or p-type. In this project, sharp needles will be pressed against silicon integrated circuits inside an electron microscope. These needles will be used to perform a Seebeck effect experiment to determine which parts of the semiconductor is n-type and which parts are p-type.
Untersuchung von Oberflächenbeschichtungen auf Cellulosefasern mittels IR-Spektroskopie
Im Rahmen des CD-Labors für oberflächenphysikalische und chemische Grundlagen der Papierfestigkeit ist eine Bachelor Arbeit zu vergeben. Im Rahmen der Arbeit sollen zwei verschiedene Oberflächenbeschichtungen mit polarisationsmodulierter Reflexionsspektroskopie untersucht werden. Die Ergebnisse der Arbeit sollen zu einer aktuellen Fragestellung beitragen. Kontakt: Robert Schennach
For the ongoing research within the CD-Laboratory for surface chemical and physical fundamentals of paper strength hemicelluloses shall be isolated form cellulose. This will take place at the facilities of our industrial partner Lenzing AG. Subsequently the produced samples shall be characterized at our facilities by infrared spectroscopy.
Within the framework of the CD-laboratory for surface chemical and physical fundamentals of paper strength, a bachelor's project is available. The project is aimed towards infrared spectroscopic characterizations of cellulosic fibers and their surface modifications relevant to paper production.
Fabrication and Characterization of organic photovoltaic cells
The reliable and cost-efficient manufacturing of organic photovolatic cells is the prerequisite for their potential application in industrial photovoltaics. Highly efficient double-layer cells can be fabricated by sequential dip-coating of differently solvable conjgated polymers. The power efficiency of such cells can be optimized by an electronic tuning of the polymer thin films either by doping with fullerene type dopants or by the coplymer blend technique. This new organic photovoltaic cells are characterized concerning their essential parameters. Contact: email@example.com
Growth and Characterization of functional organic thin films by dip-coating
Dip-coating is an overlooked high-tech approach to manufacture highly controlled and defined thin films of conjugated polymers. The precondition for a successful application of this technique is the basic understanding and control oft he deposition process and a deeper understanding of the nature of the film forming parameters. Prestudies support the high potential of this thin film technique with the perspective of application for large area manufacturing for organic electronics and organic optoelectronics. Contact: firstname.lastname@example.org
Growth and Characterization of New Organic Single Crystalline Semiconductors
The packaging of organic molecules in the crystal structure is the base oft he resulting electronic bandstructure. To modify and tune the physical properties like carrier mobility it is required to tune the bandstructure. This is targeted by the application of new conjugated organic molecules, which are grown into single crystals. The crstal structure is determined based on x-ray diffraction experiments in collabroation with the chemistry department of the TUGraz. Contact: email@example.com
Quantum-Cascade Lasers for state-of-the-art Spectroscopy
Quantum-Cascade Lasers (QSL) are a new and high-tech approach in the area of mobile spectroscopy. The strongly icreasing demand in the segments like enviromement (water and air quality), health (near patient testing) and food control, to name a few, is met by the availablity of new spectroanalytic strategies. Du to their wavelength tunability, QSL offer the opportunity to collect spectra of gases, liquids and solids without the need of dispersive element (grating, prism). A series of bachelor projects is offered in this area.
Testing Polyphenylene-type Dendrimers in Sensor Applications
Current trends towards molecular based sensor elements raise a quest for novel materials and concepts, which allow controlling the function of the active sensor material on the molecular scale – the scale where the sensing event takes place. Among a wide variety of macromolecules electro-active dendrimers are promising candidates for a very wide range of sensor applications. It will be the goal of this project to explore different novel sensor concepts based on dendrimers and test for their implementation in macroscopic electrical- and optical-based solid-state sensor devices. The project is embedded in ongoing PhD and Master projects.
Tuning the electronic properties of organic Semiconductors
Organische Halbleitermaterialien sind eine viel versprechende Materialklasse für Anwendungen im Bereich von Bildschirmen, Raumbeleuchtung, Solarzellen, elektronischen Bauelementen, Sensoren, aber auch molekularer Elektronik. Einer der Hauptvorteile dieser Materialklasse ist, dass ihre Eigenschaften (vie Valenz- und Leitungsbandkante) sehr einfach über chemische Substituenten eingestellt werden können. Aufbauend auf den Bachelorarbeiten von Johannes Kofler, Peter Krabb und Bernhard Kretz und der Dissertation von DI Oliver Hofmann soll im Rahmen der vorliegenden Arbeit das Verständnis, wie elektronenarme und elektronenreiche chemische Substituenten die elektronischen Eigenschaften organischer Halbleiter verändern, vervollständigt werden. Der praktische Teil der Arbeit wird aus quantenmechanischen Simulationsrechnungen bestehen, in denen die Gültigkeit der empirisch bekannten Regeln zu Substituenteneffekten und verschiedene Ladungsträgerpartitionierungsschemata überprüft werden sollen.
Kontakt: Egbert Zojer