A5068730189- Chalcogenide Semiconductor Thin Films
- Quantum Dots Synthesis And Properties
- Perovskite Materials and Applications
- Gold and Silver Nanoparticles Synthesis and Applications
- Organic Electronics and Photovoltaics
- ZnO doping and properties
- Copper-based nanomaterials and applications
- Electronic and Structural Properties of Oxides
- 2D Materials and Applications
- Conducting polymers and applications
- Thin-Film Transistor Technologies
University of Groningen
2022-2025
Abstract The efficiency of organic solar cells has raised drastically in the past years. However, there is an undeniable lack hole transport layers that can provide high carrier selectivity, low defect density, and processing robustness, simultaneously. In this work, issue addressed by studying generation surface passivation nickel oxide (NiO x ). It revealed oxidation state species on NiO lowers contact resistance but hinders charge extraction when employed as layer cells. By using them...
Abstract The phase‐transfer ligand exchange of PbS quantum dots (QDs) has substantially simplified device fabrication giving hope for future industrial exploitation. However, this technique when applied to QDs large size (>4 nm) gives rise inks with poor colloidal stability, thus hindering the development photodetectors in short‐wavelength infrared range. Here, it is demonstrated that methylammonium lead iodide ligands can provide sufficient passivation up 6.7 nm, enabling a minimum...
Slow hot-carrier cooling may potentially allow overcoming the maximum achievable power conversion efficiency of single-junction solar cells. For formamidinium tin triiodide, an exceptional slow time a few nanoseconds was reported. However, systematic study cation influence, as is present for lead compounds, lacking. Here, we report first comparative on formamidinium, methylammonium, and cesium triiodide thin films. By investigating their photoluminescence, observe considerable shift emission...
3D superlattices made of colloidal quantum dots are a promising candidate for the next generation optoelectronic devices as they expected to exhibit unique combination tunable optical properties and coherent electrical transport through minibands. While most previous work was performed on 2D arrays, control over formation these systems is lacking, where limited long-range order energetical disorder have so far hindered potential metamaterials, giving rise disappointing properties. Here, it...
<title>Abstract</title> Superlattices of lead chalcogenide colloidal quantum dots hold promise to revolutionise the field infrared optoelectronics due their unique combination optical and transport properties. However, main challenge remains form a homogeneous thin-film with long-range order avoiding cracking upon ligand exchange. This problem is particularly evident in 2D superlattices where interactions driving self-assembly are limited single plane yielding very defective films. To...
ABSTRACT Despite the rapid efficiency increase, tin halide perovskite solar cells are significantly behind their lead‐based counterpart, with highest reported of 15.38%. The main reason for this large difference is attributed to instability Sn 2+ , which easily oxidizes 4+ creating vacancies and increasing open‐circuit voltage loss. In work, we implemented thiocyanate (Sn(SCN) 2 ) as an additive passivating bulk defects a germanium‐doped film. Adding SCN − ions reduces iodine vacancies,...
Lead chalcogenide colloidal quantum dots are one of the most promising materials to revolutionize field short-wavelength infrared optoelectronics due their bandgap tunability and strong absorption. By self-assembling these into ordered superlattices, mobilities approaching those bulk counterparts can be achieved while still retaining original optical properties. The recent literature focused mostly on PbSe-based but PbS have several advantages, including higher stability. In this work, we...