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Thermal tunability of monolithic polymer microcavities
(2008)We demonstrate the thermal tunability of the emission of polymer embedded in microcavities. The large thermo-optic coefficients of a conjugated polymer is combined with the possibility to tailor the emission properties by ... -
3D self-consistent percolative model for networks of randomly aligned carbon nanotubes
(Institute of Physics Publishing, 2015)A numerical percolative model for simulations of random networks of carbon nanotubes is presented. This algorithm takes into account the real 3D nature of these networks, allowing for a better understanding of their ... -
Analysis of sprayed carbon nanotube films on rigid and flexible substrates
(Institute of Electrical and Electronics Engineers Inc., 2014)We report on the morphological, electrical and optical characteristics of Carbon nanotube (CNT) films on different transparent substrates, obtained using spray deposition. The effect of different substrate materials on the ... -
Modeling of silicon heterojunction solar cells
(IEEE, 2015)Here we present modeling results on crystalline Si (c-Si)/amorphous Si (a-Si) heterojunction solar cells using a physical simulation which includes various models for the defect states in the a-Si barriers, as well as ... -
Monte Carlo analysis of the terahertz difference frequency generation susceptibility in quantum cascade laser structures
(Optical Society of American (OSA), 2015)Based on self-consistent ensemble Monte Carlo simulations coupled to the optical field dynamics, we investigate the giant nonlinear susceptibility giving rise to terahertz difference frequency generation in quantum cascade ... -
Monte-Carlo Analysis of the Nonlinear Susceptibility in Quantum Cascade Laser Structures for THz Difference Frequency Generation
(OSA The Optical Society, 2015) -
Humidity-enhanced thermally tunable TiO 2/SiO 2 Bragg stacks
(2012)Tunable, stimuli-responsive photonic crystals (PCs) have developed into a fast growing, interdisciplinary research field attracting attention from various scientific communities, such as photonics, sensing, and materials ... -
Pauli blockade of the electron spin flip in bulk GaAs
(AMERICAN PHYSICAL SOC, 2007)By means of time-resolved optical orientation under strong optical pumping, the k dependence of the electron spin-flip time (tau(sf)) in undoped GaAs is experimentally determined. tau(sf) monotonically decreases by more ... -
Luminescence based series resistance mapping of III-V multijunction solar cells
(2013)A method to measure the series resistance of GaIn P/Ga(In)As/Ge triple-junction solar cells spatially resolved is developed, based on luminescence imaging. With the help of network simulations, the dependence of the local ... -
pH-Sensoren auf Basis biokompatibler halbleitender Polymere
(Shaker, 2012)