Institut für Festkörperphysik
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150 Submissions in this community.

Recent Submissions
Few-layer antimonene by liquid-phase exfoliation

Gibaja, Carlos; Rodriguez-San-Miguel, David; Ares, Pablo; Gómez-Herrero, Julio; Varela, Maria; Gillen, Roland; Maultzsch, Janina; Hauke, Frank; Hirsch, Andreas; Abellán, Gonzalo; Zamora, Félix (2016)

We report on a fast and simple method to produce highly stable isopropanol/water (4: 1) suspensions of few-layer antimonene by liquid-phase exfoliation of antimony crystals in a process that is ass...

Blind testing of cross-linking/mass spectrometry hybrid methods in CASP11

Schneider, Michael; Belsom, Adam; Rappsilber, Juri; Brock, Oliver (2016)

Hybrid approaches combine computational methods with experimental data. The information contained in the experimental data can be leveraged to probe the structure of proteins otherwise elusive to c...

Deterministische Quantenpunktmikrolinsen als effiziente Quantenlichtquellen

Thoma, Alexander (2017)

Quantenbits, häufig auch als Qubits bezeichnet, bilden die Grundlage der Quanteninformatik. In der Regel können diese durch jedes beliebige quantenmechanische Zweiniveausystem repräsentiert werden...

Breitbandige VCSEL mit minimalem Energieverbrauch für kommerzielle Anwendungen

Larisch, Gunter (2017)

Ziel der vorliegenden Arbeit ist eine allumfassende Optimierung oberflächenemittierender Halbleiterlaser mit vertikaler Kavität im Hinblick auf zukünftige, kommerzielle Anwendungen. Dabei sind sowo...

Charakterisierung von dotierten Zinnoxidschichten für die Detektion von Gasen durch ellipsometrische Messung der Oberflächenplasmonenresonanz

Fischer, Daniel (2017)

In der vorliegenden Dissertation wird die Verbesserung von Gassensoren durch Beschichtung mit dotierten Zinnoxidschichten untersucht, wobei zur Messung der Gase die Methode der oberflächenplasmonen...

Anisotropic plasmonic nanoparticle arrays for surface-enhanced biosensors

Gkogkou, Dimitra (2017)

Plasmonic structures exhibiting surface enhancement properties can lead to hypersensitive, label-free and analyte-specific detection of organic molecules. The motivation of this work is the realiza...

Temperature-dependent recombination coefficients in InGaN light-emitting diodes

Nippert, Felix; Karpov, Sergey Yu.; Callsen, Gordon; Galler, Bastian; Kure, Thomas; Nenstiel, Christian; Wagner, Markus R.; Strassburg, Martin; Lugauer, Hans-Jürgen; Hoffmann, Axel (2016)

We obtain temperature-dependent recombination coefficients by measuring the quantum efficiency and differential carrier lifetimes in the state-of-the-art InGaN light-emitting diodes. This allows us...

Determination of recombination coefficients in InGaN quantum-well light-emitting diodes by small-signal time-resolved photoluminescence

Nippert, Felix; Karpov, Sergey; Pietzonka, Ines; Galler, Bastian; Wilm, Alexander; Kure, Thomas; Nenstiel, Christian; Callsen, Gordon; Strassburg, Martin; Lugauer, Hans-Jürgen (2016)

We suggest a novel technique for the evaluation of the recombination coefficients corresponding to Shockley–Read–Hall, radiative, and Auger recombination that occur in InGaN/GaN-based light-emittin...

Polarization-induced confinement of continuous hole-states in highly pumped, industrial-grade, green InGaN quantum wells

Nippert, Felix; Nirschl, Anna; Schulz, Tobias; Callsen, Gordon; Pietzonka, Ines; Westerkamp, Steffen; Kure, Thomas; Nenstiel, Christian; Strassburg, Martin; Albrecht, Martin; Hoffmann, Axel (2016)

We investigate industrial-grade InGaN/GaN quantum wells (QWs) emitting in the green spectral region under high, resonant pumping conditions. Consequently, an ubiquitous high energy luminescence is ...

Spektrale und transiente Eigenschaften der Lumineszenz von Cu2ZnSn(S,Se)4-Dünnschichten

Kretzschmar, Steffen (2017)

Um die auf der Pariser Klimakonferenz 2015 vereinbarten Ziele zu erreichen, muss die photovoltaische Energieerzeugung weltweit deutlich ausgebaut werden, da diese unter den regenerativen Energieque...

Non-radiative loss mechanisms in InGaN/GaN multiple quantum well light-emitting diodes

Nippert, Felix (2017)

InGaN/GaN quantum wells (QWs) are commonly used for blue and green light-emitting diodes (LEDs), for example in solid-state lighting (SSL). While such structures are already in mass-production, the...

Many body effects in heavily doped GaN

Nenstiel, Marc Christian Siegfried (2017)

In this work the fundamental optical signatures of highly Germanium doped GaN are investigated. This work gives fundamental new insights in interactions of carriers in a three dimensional degenerat...

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...