Publications
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Kautilya versus Thiruvalluvar. Inspiration from Indian Ancient Classics for Ethics in Governance and Management KU Leuven
We consider two classical sources from Ancient India as possible sources for tackling the lack of ethics in governance and business in emerging markets today. First, Arthashastra is a treatise on economics and politics written by Kautilya, the advisor to the Mauryan emperor Chandragupta during the fourth century BC. Kautilya provided practical recommendations like providing high and fair compensations to civil servants. It is suggested that the ...
Novel cost-effective approach to produce nano-sized contact openings in an aluminum oxide passivation layer up to 30 nm thick for CIGS solar cells KU Leuven Hasselt University
Improving the Morphology Stability of Spiro-OMeTAD Films for Enhanced Thermal Stability of Perovskite Solar Cells Hasselt University KU Leuven
To guarantee a long lifetime of perovskite-based photovoltaics, the selected materials need to survive relatively hightemperature stress during the solar cell operation. Highly efficient ni-p perovskite solar cells (PSCs) often degrade at high operational temperatures due to morphological instability of the hole transport material 2,2',7,7'-tetrakis (N,N-di-p-methoxyphenyl-amine)9,9'-spirobifluorene (Spiro-OMeTAD). We discovered that the ...
Detrimental Impact of Na Upon Rb Postdeposition Treatments of Cu(In,Ga)Se-2 Absorber Layers Hasselt University KU Leuven
Passivation of the Cu(In,Ga)Se-2 (CIGS)/Mo back contact using AlOx is studied to reduce the recombination at this interface. Herein, RbF postdeposition treatment (RbF-PDT), a well-established method to improve absorber and front interface properties is used on back-passivated solar cells. It is found that this combination deteriorates the performance due to formation of an injection barrier at the front and reduced acceptor concentration. ...
Enhanced Laterally Resolved ToF-SIMS and AFM Imaging of the Electrically Conductive Structures in Cable Bacteria Hasselt University University of Antwerp
Cable bacteria are electroactive bacteria that form a long, linear chain of ridged cylindrical cells. These filamentous bacteria conduct centimeter-scale long-range electron transport through parallel, interconnected conductive pathways of which the detailed chemical and electrical properties are still unclear. Here, we combine time-of-flight secondary-ion mass spectrometry (ToF-SIMS) and atomic force microscopy (AFM) to investigate the ...
Efficient long-range conduction in cable bacteria through nickel protein wires. Flanders Institute for Biotechnology University of Antwerp Vrije Universiteit Brussel Hasselt University Ghent University
Comparative study on the effects of alkylsilyl and alkylthio side chains on the performance of fullerene and non-fullerene polymer solar cells Vrije Universiteit Brussel Hasselt University KU Leuven
Two novel high gap donor polymers – PBDTTSi-TzBI and PBDTTS-TzBI, based on imide-fused benzotriazole (TzBI) with asymmetric side chains and alkylsilyl (Si) or alkylthio (S) substituted 4,8-di(thien-2-yl)benzo-[1,2-b:4,5-b′]dithiophene (BDTT) – are successfully synthesized. The effect of the side chain variation on the photophysical, morphological and photovoltaic properties of blends of these polymers with fullerene and non-fullerene ...
Conductive structures in cable bacteria: a study of the electrical and compositional properties of the periplasmic conductive structures in cable bacteria Hasselt University
An Ordered and Fail‐Safe Electrical Network in Cable Bacteria Hasselt University University of Antwerp
Cable bacteria are an emerging class of electroactive organisms that sustain unprecedented long-range electron transport across centimeter-scale distances. The local pathways of the electrical currents in these filamentous microorganisms remain unresolved. Here, the electrical circuitry in a single cable bacterium is visualized with nanoscopic resolution using conductive atomic force microscopy. Combined with perturbation experiments, it is ...