Concept
Wafer
Publications associées (430)
High-temperature annealing effects on molybdenum-silicon contact substrate for vertically structured silicon quantum-dot solar cells
This paper studies the applicability of sputtered Molybdenum (Mo) thin films on silicon wafers (Mo-Si) to act as contact substrates for vertically structured Si quantum-dot (QD) solar cells. The compatibility of Mo-Si contact substrate with Si QD material ...
2019Electrically pumped photonic integrated soliton microcomb
Tobias Kippenberg, Andrey Voloshin, Junqiu Liu, Maxim Karpov, Hairun Guo, Erwan Guillaume Albert Lucas, Arslan Sajid Raja, John David Jost
Microcombs provide a path to broad-bandwidth integrated frequency combs with low power consumption, which are compatible with wafer-scale fabrication. Yet, electrically-driven, photonic chip-based microcombs are inhibited by the required high threshold pow ...
2019Conformal Deposition of Conductive Single-Crystalline Cobalt Silicide Layer on Si Wafer via a Molecular Approach
Giovanni De Micheli, Olha Sereda, Pierre-Emmanuel Julien Marc Gaillardon, Tsung-Han Lin, David Baudouin
The realization of metal-semiconductor contacts plays a significant role in ultrascaled integrated circuits. Here, we establish a low-temperature molecular approach for the conformal deposition of a 20-nm Co-rich layer on Si (100) wafers by reaction in sol ...
2018Variable-height microfluidic channels for accurate immobilization of C. elegans worms by using a single dry etching step
Martinus Gijs, Hüseyin Baris Atakan, Rongrong Xiang
We present an aspect ratio dependent etching (ARDE) method, utilizing the Bosch dry etching process of silicon, to create the optimal silicon master microstructures for replication of polydimethylsiloxane (PDMS) microchannels that allow immobilizing C. ele ...
2018Full-Area Passivating Contacts with High and Low Thermal Budgets: Solutions for High Efficiency c-Si Solar Cells
Today more than 90% of the global PV market is covered by c-Si solar cells which are limited by recombination losses at the metal-semiconductor interface. This recombination path can be avoided by separating the metal from the c-Si wafer by introducing a b ...
EPFL2018Giant multiphoton absorption for THz resonances in silicon hydrogenic donors
The absorption of multiple photons when there is no resonant intermediate state is a well-known nonlinear process in atomic vapours, dyes and semiconductors. The N-photon absorption (NPA) rate for donors in semiconductors scales proportionally from hydroge ...
NATURE PUBLISHING GROUP2018Additive Fabrication of Silicon Pillars on Monocrystalline Silicon by Direct Laser Melting
Marie Camille Laëtitia Le Dantec
Additive Manufacturing (AM) is an emerging part production technology that offers many ad-vantages such as high degree of customization, material savings and design of 3D highly complex structures. However, AM is a complex multiphysics process. Therefore, ...
EPFL2018Three-Dimensional Integrated Ultra-Low-Volume Passive Microfluidics with Ion-Sensitive Field-Effect Transistors for Multiparameter Wearable Sweat Analyzers
Mihai Adrian Ionescu, Fabien Patrick Wildhaber, Junrui Zhang, Erick Antonio Garcia Cordero, Johan Frédéric Longo, Hoël Maxime Guérin, Francesco Bellando
Wearable systems could offer noninvasive and real-time solutions for monitoring of biomarkers in human sweat as an alternative to blood testing. Recent studies have demonstrated that the concentration of certain biomarkers in sweat can be directly correlat ...
2018Transparent Passivating Contacts for Front Side Application in Crystalline Silicon Solar Cells
In this thesis, we present the development and characterization of novel approaches to carrier-selective passivating contacts for crystalline silicon (c-Si) solar cells. In our first approach, we benefit from a wide-bandgap material, namely mixed-phase sil ...
EPFL2018Electrostatically gated nanofluidic membranes: Technological developments and use of electrochemically polarizable materials
Stefano Silvio Giovanni Varricchio
Solid-state nanoporous membranes able to control ionic flows at the molecular level could have important applications in fields of research such as water filtration, nanomedicine, energy production, drug delivery, and bio-chemical analysis. The ability to ...
EPFL2018