Publications by authors named "Simon Scheiner"
Article Synopsis
- Current-voltage hysteresis in organo-halide perovskite solar cells can be mitigated by engineering a thin methylammonium iodide-rich interface between the perovskite and metal oxide, improving cell performance.
- Surface functionalization techniques enable control over the composition of this interface, transitioning it from lead (Pb) poor to Pb rich, while keeping the bulk properties of the perovskite films intact.
- Advanced techniques like X-ray reflectivity and Kelvin probe force microscopy have provided insights into the structural changes at the interface and local potential variations, contributing to a new understanding of hysteresis in these solar cells.
Article Synopsis
- The commercialization of thin-film solar cells using organic lead perovskites is hindered by interface loss in current devices.
- A new interface architecture combines efficient hole-transporting materials that are both reliable and cost-effective, improving performance without sacrificing stability.
- Ta-WO-doped multilayers have been shown to create better electrical contacts, achieving up to 21.2% efficiency and over 1000 hours of light stability in specific perovskite solar cell designs.
Tuning the electrostatics of ethylene-glycol-based self-assembled monolayers (SAMs) by doping with ions is shown. Molecular dynamics simulations unravel binding mechanisms and predict dipole strengths of the doped layers. Additionally, by applying such layers as dielectrics in organic thin-film transistors, the incorporated ions are proven to enhance device performance by lowering the threshold voltage and increasing conductivity.
View Article and Find Full Text PDFSustainable biomass production is expected to be one of the major supporting pillars for future energy supply, as well as for renewable material provision. Algal beds represent an exciting resource for biomass/biofuel, fine chemicals and CO2 storage. Similar to other solar energy harvesting techniques, the efficiency of algal photosynthesis depends on the spectral overlap between solar irradiation and chloroplast absorption.
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