Mechanically resonant structures are of interest for a wide range of sensing applications as well as basics physics research. Deflecting cantilevers and beams have been thoroughly studied for their uses as resonant sensors. The fabrication of smaller structures with lower mass and higher frequency can improve the sensitivity of such sensors. In this study, we have fabricated and measured the sm...

In this paper we study the changes in iron concentrations and distributions in multicrystalline silicon (mc-Si) wafers after annealing in the temperature range of 600-900 o C. The dissolved Fe distributions across mc-Si wafers are obtained by photoluminescence imaging taken before and after dissociation of FeB pairs. The results show that the precipitation of dissolved Fe, both near the grain b...

Photoconductivity-based measurements of recombination lifetimes in multicrystalline silicon are often hampered by carrier trapping effects, which cause a characteristically large relative increase in the photoconductance. Single-crystal p-type float-zone wafers of varying resistivities were cross contaminated with multicrystalline wafers that exhibited such trapping. A proportion of the impurit...

EWT back contact solar cells are manufactured from very thin silicon wafers. These wafers are drilled by means of a laser process creating a matrix of tiny holes with a density of approximately 125 holes per square centimeter. Their influence in the stiffness and mechanical strength has been studied. To this end, both wafers with and without holes have been tested with the ring on ring test. Nu...

A versatile fabrication process that allows users to quickly construct micromachined structures using a one metal, one silicon dioxide film stack on a silicon wafer is presented in this technical report. This simplified process, called Mock CMOS, (a) starts from pre-processed wafers and requires only one photolithography step, (b) provides a conductor material for actuating electrostatic and th...

1.1 Origin and discovery Silicon, one of the more common elements in nature, is defined as a metalloid, which corresponds to the number 14 in the Mendeleyev Periodic Table. It is heavier than Carbon (element number 6 in the periodic table and a key component in biochemistry), but both have chemical characteristics that are very close. Since human civilization began, volcanic stones containing t...

The main applications of photoconductance measurements of silicon wafers are the determination of implicit device voltages, bulk minority carrier lifetimes, emitter recombination currents and surface recombination velocities. These applications are illustrated with selected experiments. Multicrystalline and single crystal silicon wafers are used with different surface conditions. The practical ...

We present graphene synthesized by chemical vapour deposition under atmospheric pressure on both porous nanostructures and flat wafers as electrode scaffolds for supercapacitors. A 3nm thin gold layer was deposited on samples of both porous and flat silicon for exploring the catalytic influence during graphene synthesis. Micro-four-point probe resistivity measurements revealed that the resistiv...

An increasing part of the semiconductor device community is using SOI wafers for the fabrication of modern CMOS generations (FINFET [1], Schottky barrier transistors [2], (bio-) sensor applications, optical devices and also as test vehicles to study the fundamental properties of 1D and 2D silicon structures. For SOI thicknesses below the Debye length it becomes interesting to study metal-Si con...

Polyaminoboranes [N(R)H-BH2]n (1: R = H, 2: R = Me) were pyrolyzed on a range of substrates: silicon, metal foils (stainless steel, nickel, and rhodium), and sapphire wafers, as well as on Al2O3 and AlN powders. The pyrolysis of 2 on a Si-wafer resulted in porous nanostructures containing hexagonal-boron nitride (h-BN). In the case of 1 or H3N·BH3 as precursor, using rhodium foil as substrate a...