Hybrid metal-halide perovskite solar cells have experienced a tremendous development within a short time period. In 2009 the first perovskite single-junction solar cell with a power conversion efficiency (PCE) of 3.8% was presented. Just eleven years later, in year 2020, a PCE of 25.5% was achieved, which approaches the value of silicon single-junc...
A nonionic double hydrophilic block copolymer with a long permanently hydrophilic and a small thermoresponsive block is synthesized by reversible addition–fragmentation chain-transfer polymerization (RAFT). By employing a specifically designed chain-transfer agent, the polymer is functionalized with complementary end groups which are suited for För...
The capacity to compensate for environmental change determines population persistence and biogeography. In ectothermic organisms, performance at different temperatures can be strongly affected by temperatures experienced during early development. Such developmental plasticity is mediated through epigenetic mechanisms that induce phenotypic changes ...
MATSim is an agent-based transport simulation model. In contrast to a pure dynamic traffic assignment (DTA) model, MATSim can react to more choice dimensions than route choice, which is the only choice treated by a typical DTA. Simulating the mobility and activity participation of individuals during the whole day, MATSim can additionally represent ...
The use of lightweight concrete (LWC) for structural and non-structural applications has attracted great interest in recent years. The main benefits include reduced deadload of structural elements and generally lower production and transportation costs. However, a decrease in concrete density often leads to a decrease in strength and durability. Ty...
This work explores the question whether contextual information can help to improve the performance of news recommender systems? First, we examine particularities of news by analysing an extensive collection of web server logs. Next, we describe the findings of a series of data-driven challenges which help researchers investigate a variety of recomm...
Sustainable Energy, free from fossil fuels, has recently emerged as environmentfriendly and climate-friendly solution. Naturally, it has become the primary motto of European environmental policy and the energy industry. Pertaining developments are tremendous and have resulted in the advent of modern methods, technological advancements and better en...
This dissertation focuses on the development of asymmetric conjugate addition of silicon nucleophiles or silicon pronucleophiles to activated alkenes, providing general and efficient methods for stereodefined silanes. Silicon GRIGNARD reagents and Si–B reagents are mainly employed as silicon sources for the enantioselective 1,4-silyl transfer. The ...
Landslide is a major natural hazard in Kyrgyzstan and Tajikistan. Knowledge about atmospheric triggering conditions and climatic disposition of landslides in Kyrgyzstan and Tajikistan is limited even though this topic has already been investigated thoroughly in other parts of the world. In this study, the newly developed, high-resolution High Asia ...
We apply an InGaAs quantum dot based single-photon source for the absolute detection efficiency calibration of a silicon single-photon avalanche diode operating in Geiger mode. The single-photon source delivers up to (2.55 ± 0.02) × 106 photons per second inside a multimode fiber at the wavelength of 929.8 nm for above-band pulsed excitation with a...
