Institut für Festkörperphysik
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Vibrational properties of low-dimensional inorganic layered materials

Staiger, Matthias (2017)

The family of low-dimensional inorganic layered materials covers a wide spectrum of properties, structurally and electronically. Ever since their synthesis as nanotubes and their preparation as mon...

Mode-locking, dynamic and nonlinear optical properties of MOVPE-grown InAs/InP quantum-dot and quantum-dash lasers

Sadeev, Tagir (2016)

Die eingereichte Arbeit untersucht die Eigenschaften von auf InP basierenden optischen Quantenpunkt- (quantum dot, QDot) und Quantenfaden (QDash)- Halbleiterlasern. Der erste Teil der Arbeit widmet...

Charakterisierung und Optimierung von (Al, Ga)N-basierten UV-Photodetektoren

Brendel, Moritz (2016)

In this work, the influence of dislocation density, heterostructure design and detector geometry on the electro-optic properties of AlGaN-based metal-semiconductor-metal photodetectors (MSM PD) was...

Metal-organic nanowires

Xing, Yanlong (2016)

Metal-organic nanowires exhibit not only the properties of one-dimensional structures including ultra-small scale, large surface-to-volume ratio etc., but also obvious advantages in their tunable p...

InP segmented Mach-Zehnder modulators with advanced EO functionalities

Aimone, Alessandro (2016)

Thema dieser Arbeit sind segmentierte Indium Phosphid (InP) Mach-Zehnder Modulatoren (SEMZMs). Diese elektro-optischen Komponenten werden verwendet um Digital Analog Wandler (DACs) und digitale Sig...

Neutron diffraction in extreme conditions

Hartwig, Steffen (2016)

In this thesis three different families of systems were examined. Firstly, the unusual magnetic properties of three intermetallic cerium compounds. Secondly, two members of the field of iron based ...

Assembly of carbon nanotubes and alkylated fullerenes: nanocarbon hybrid towards photovoltaic applications

Shen, Yanfei; Reparaz, Juan Sebastián; Wagner, Markus Raphael; Hoffmann, Axel; Thomsen, Christian; Lee, Jeong-O; Heeg, Sebastian; Hatting, Benjamin; Reich, Stephanie; Saeki, Akinori; Seki, Shu; Yoshida, Kaname; Babu, Sukumaran Santhosh; Möhwald, Helmuth; Nakanishi, Takashi (2011)

Taking advantage of the non-covalent interaction between alkyl chains and the sidewalls of a single-walled carbon nanotube (SWCNT), a nanocarbon hybrid of SWCNT and a fullerene (C60) derivative wit...

Formation of gold nanoparticles in polymeric nanowires by low-temperature thermolysis of gold mesitylene

Erk, Christoph; Yau, Man Yan Eric; Lange, Holger; Thomsen, Christian; Miclea, Paul; Wehrspohn, Ralf B.; Schlecht, Sabine; Steinhart, Martin (2012)

The formation of polymer nanowires containing metal nanoparticle chains by low-temperature thermolyses of metal precursors has remained challenging. We report the block copolymer-assisted generatio...

Li-doped ZnO nanorods with single-crystal quality - non-classical crystallization and self-assembly into mesoporous materials

Lizandara-Pueyo, Carlos; Dilger, Stefan; Wagner, Markus R.; Gerigk, Melanie; Hoffmann, Axel; Polarz, Sebastian (2014)

The benefits and promise of nanoscale dimensions for the properties of (ceramic) semiconductors are widely known. 1-D nanostructures in particular have proven to be of extraordinary relevance due t...

Combining scanning probe microscopy with temperature programmed desorption on metal supported MgO thin films

Stuckenholz, Stefanie (2016)

Today’s world faces challenges due to limited resources in materials and energy, that go along with pollution-based problems such as global warming. One way to tackle these issues is to improve in...

The temple scroll and the structural properties of collagen

Schütz, Roman (2016)

Die „Schriftrollen vom Toten Meer“ stoßen seit ihrer Entdeckung Mitte des letzten Jahrhunderts bei den Religionshistorikern und in der breiten Öffentlichkeit auf großes Interesse. Sie stammen aus d...

Atomic structure and electronic properties of self-assembled clusters on silicon surfaces

Franz, Martin (2015)

In this thesis, the growth, the atomic structure as well as the electronic properties of self-assembled magic clusters and of thin rare earth silicide films on Si surfaces are investigated using sc...

Unravelling annealing-related processes in ZnO:Al thin films used for tailoring electrical and optical properties

Hlawenka, Steffi (2016)

Thermal post-deposition treatments are known to have a significant influence on the optoelectronic properties of ZnO:Al thin films. Regarding a competitive industrial application as transparent con...

Studying the local character of Raman features of single-walled carbon nanotubes along a bundle using TERS

Peica, Niculina; Thomsen, Christian; Maultzsch, Janina (2011-02-25)

we show that the Raman intensity of the G-mode in tip-enhanced Raman spectroscopy (TERS) is strongly dependent on the height of the bundle. Moreover, using TERS we are able to position different si...

Is nanostructuring sufficient to get catalytically active Au?

Klyushin, Alexander (2015)

The discovery that gold nanoparticles (Au NPs) supported on metal oxides are active in low-temperature CO oxidation has inspired a considerable amount of research directed toward the understanding ...

Double-resonant Raman scattering in graphene, few-layer graphene, and carbon nanotubes

Herziger, Felix (2015)

This works presents an analysis of double-resonant two-phonon and phonon-defect Raman modes in graphene, few-layer graphene and carbon nanotubes. First, the double-resonant 2D mode in Bernal-stacke...

In-situ Kathodolumineszenzlithographie zur Herstellung deterministischer Quantenbauelemente

Gschrey, Manuel (2015)

Der Einsatz von Quantenpunkten (QPen) in zukünftigen Anwendungen im Bereich der Quantenkommunikation und der Quanteninformation erfordert die Entwicklung von deterministischen Technologien, welche ...

Investigation of low dimensional and frustrated spin 1 / 2 magnets

Balz, Christian (2015-10-14)

Die vorliegende Doktorarbeit beschäftigt sich mit der Untersuchung der magnetischen Isolatoren Ca10Cr7O28 und (NO)[Cu(NO3)3]. Die magnetischen Eigenschaften basieren auf den Spin-1/2 3d Übergangsme...

Strukturcharakterisierung Gold-induzierter Germanium- und Siliziumoberflächenrekonstruktionen mit Raman-Spektroskopie

Räthel, Jochen (2015-11-12)

Atomare Ketten formiert durch Metallatome auf Halbleiteroberflächen sind dafür bekannt exotische elektronische Grundzustände wie zum Beispiel die Tomonaga-Luttinger-Flüssigkeit oder Ladungsdichtewe...

Chip designs for high efficiency III-nitride based ultraviolet light emitting diodes with enhanced light extraction

Lobo Ploch, Neysha (2015-09-25)

Ziel dieser Arbeit war es hocheffiziente III-nitridbasierte UV-LEDs für Anwendungen wie z.B. Wasserdesinfektion, medizinische Phototherapie oder Gasdetektion zu entwerfen und herzustellen. Der Schw...