Contribution to a book

Fabricating thick (1000 nm) solution-processed perovskite layers is expected to increase the efficiency of carbon-contact-based solar cells compared to thinner (500 nm) films. However, increasing only the deposited layer thickness often results in buried voids inside the dry film. [...]

One approach to scaling quantum computers requires large-scale integration of qubit control electronics at cryogenic temperatures close to the qubits to reduce the wiring bottleneck, signal latencies, and improve the modularity of the system. Finding optimized specifications by accurately simulating the qubit-electronics interface allows optimal budgeting of resources (heat dissipation, area) for scalable quantum computers. [...]

The development of high-performance organic photovoltaic materials has gained significant attention due to their potential for low-cost, flexible, and lightweight solar energy solutions, including semi-transparent photovoltaics for building-integrated applications.[1] Central to this effort is the optimization of donor-acceptor blends, where efficient charge transfer and exciton dynamics are critical for enhancing device efficiency.[2] Among the promising materials, the blend of PCE10, a polymer donor, and FOIC, a non-fullerene acceptor, has shown considerable potential due to its strong near-infrared absorption and favorable energy level alignment.[3] In this work, we present a comprehensive investigation into the hole transfer dynamics and optoelectronic properties of a blend material for organic photovoltaic applications. Through a combination of theoretical modeling and experimental analysis, we aim to deepen the understanding of the role of the electronic and excitonic structures in the dynamics that govern the charge separation. [...]

The commercialization of perovskite solar cells (PSCs) depends on breakthroughs in stability, yet the complex degradation mechanisms complicate the study of their long-term performance. This work investigates the role of non-radiative recombination in PSC stability by establishing a quantitative link between defect-related parameters and device performance. [...]

The advancement of flexible photovoltaic (PV) technologies needs the establishment of standardized protocols for their characterization, particularly concerning mechanical performance and durability. Here we show newly proposed standard procedures such as ISOS-B, ISOS-M and a new protocol for measuring PCE over 1000 bending cycles under 1% strain, which aim to complete existing guidelines such as IEC 61215 and IEC 61646.ISOS-B focus on bending stress testing. [...]

Cost-efficient climate change mitigation requires the continued rapid expansion of the photovoltaic (PV) system production to the multi-TW level. The PV industry is currently transforming into a key industry sector, which implies that sustainability aspects will have increasingly wide-ranging impacts. [...]

Since 2010, the International HPC Summer School (IHPCSS) has trained more than 1,500 graduate students and early-career researchers in high-performance computing (HPC). Originally a European-US collaboration, it now includes Japan, Canada, Australia and South Africa, and serves around 80 students and 40 staff each year. [...]