Concept
Silicium polycristallin
Publications associées (894)
Non-destructive piezoelectric characterisation of Sc doped aluminium nitride thin films at wafer level
Paul Muralt, Stefan Mertin, Clemens Benedict Nyffeler, Andrea Mazzalai
Scandium doped aluminium nitride (ScAlN) gained much attention during last years, since its piezoelectric response is much enlarged as compared to pure AlN films. Above 30% Sc the films are of high interest for piezoMEMS sensing and actuation, ultrasound g ...
IEEE2019Injection-dependent lateral resistance in front-junction solar cells with nc-Si:H and a-Si:H hole selective contact
Christophe Ballif, Mathieu Gérard Boccard, Jan Haschke, Jean Cattin
We investigate the role of lateral transport of minority carriers in the wafer for front-junction solar cells. The study is based on two silicon heterojunction solar cells with p-type amorphous (a-Si), and nanocrystalline (nc-Si) silicon as hole selective ...
IEEE2019Monte Carlo Modeling of Electron Multiplication in Amorphous Silicon Based Microchannel Plates
Christophe Ballif, Jonathan Emanuel Thomet, Janina Christine Isabelle Löffler, Mohamed Belhaj
Amorphous silicon based microchannel plates are being developed to overcome performance limits of conventional microchannel plates. They offer a new flexibility and ease of fabrication. A comprehensive AMCP model is being constructed to analyze the perform ...
IEEE2019Light Management: A Key Concept in High-Efficiency Perovskite/Silicon Tandem Photovoltaics
Christophe Ballif, Florent Sahli, Daniel Anthony Jacobs
The remarkable recent progress in perovskite photovoltaics affords a novel opportunity to advance the power conversion efficiency of market-dominating crystalline silicon (c-Si) solar cells. A severe limiting factor in the development of perovskite/c-Si ta ...
AMER CHEMICAL SOC2019Integration of sharp silicon nitride tips into high-speed SU8 cantilevers in a batch fabrication process
Georg Fantner, Nahid Hosseini, Jonathan David Adams, Oliver Peric, Santiago Harald Andany, Matthias Neuenschwander
Employing polymer cantilevers has shown to outperform using their silicon or silicon nitride analogues concerning the imaging speed of atomic force microscopy (AFM) in tapping mode (intermittent contact mode with amplitude modulation) by up to one order of ...
Beilstein Institut2019Performance of perovskite solar cells under simulated temperature-illumination real-world operating conditions
Michael Graetzel, Wolfgang Richard Tress, Ulf Anders Hagfeldt, Konrad Domanski, Essa Awadh R Alharbi, Brian Irving Carlsen, Anand Agarwalla
Since reaching 20% efficiency, research in perovskite photovoltaics has shifted from a race for efficiency to a race for stability. For efficiency, the standard test conditions set the rules for the race. However, the term 'stability' is used very broadly ...
NATURE PUBLISHING GROUP2019Charge extraction via graded doping of hole transport layers gives highly luminescent and stable metal halide perovskite devices
Michael Graetzel, Mohammad Ibrahim Dar, Mojtaba Abdi Jalebi, Zahra Andaji Garmaroudi
One source of instability in perovskite solar cells (PSCs) is interfacial defects, particularly those that exist between the perovskite and the hole transport layer (HTL). We demonstrate that thermally evaporated dopant-free tetra-cene (120 nm) on top of t ...
American Association for the Advancement of Science (AAAS)2019