Abstract Transition metal dichalcogenide (TMD) alloys provide a stable and reliable platform for broadband tuning of excitonic resonances. Here, the nonlinear optical response of Mo (1 − x) W x Se 2 , focusing in particular on second harmonic generation (SHG) and two‐photon photoluminescence (TP‐PL),…
Janus SeMoS monolayers (MLs) are synthetic 2D materials with unique electronic properties, as theory predicts, but their experimental exploration has been hindered by the low quality of the samples. Here we report a synthesis of high-quality Janus MLs on gold substrates by thermal exchange reaction taking…
Washington, D.C.: American Chemical Society, 2025-02-18
Heteroepitaxy of molecular adsorbates on crystalline substrates is used to assess fundamental aspects of layer formation and interaction across the interface. Depositing organic molecules on graphene, for instance, is often stimulated by the desire to noncovalently tune its electronic properties. Here,…
Washington, DC: American Chemical Society, 2024-11-21
The exceptional electronic and photonic properties of the monolayers of transition metal dichalcogenides including the spin–orbit splitting of the valence and conduction bands at the K points of the Brillouin zone make them promising for novel applications in electronics, photonics and optoelectronics.…
Abstract Research on organic thin films is largely driven by potential (opto‐)electronic applications and turns out to be no less intriguing from a fundamental point of view. Numerous studies make it clear that the understanding of device‐relevant molecular thin film architectures is quite challenging—often…
Abstract Monolayer transition metal dichalcogenides (TMD) have numerous potential applications in ultrathin electronics and photonics. The exposure of TMD-based devices to light generates photo-carriers resulting in an enhanced conductivity, which can be effectively used, e.g., in photodetectors. If…
Diese Arbeit beschäftigt sich mit der Bestimmung von Struktur-Eigenschafts-Beziehungen von epitaktisch gewachsenen organischen Dünnschichten. Im ersten Teil der Arbeit wird der Einfluss einer ultradünnen 3,4,9,10-Perylentetracarbonsäuredianhydrid (PTCDA) Zwischenschicht auf die strukturellen und optischen…