Contact and contactless porous silicon parameter measurement techniques

Contactless Characterization of Silicon Wafers

Contactless measurements are attractive and more commonly used because they do not contaminate the sample and generally do not require sample preparation. After an outline of the more common contactless characterization techniques, I will discuss a few of these in more detail. In particular resistivity or doping density profiling, minority carrier lifetime, stress, temperature, layer thickness,...

Non-Contact Surface Geometry Measurement Techniques

It is often necessary to be able to create computer models from physical objects. This is often done for the purposes of reverse engineering, or archival. Many of the contact methods, such as callipers or Coordinate Measuring Machines, are unsuitable for use in areas where the material is delicate. There are numerous techniques that are capable of performing quick accurate measurements of surfa...

Measurement of hand-vibration transmissibility by non-contact measurement techniques

Background: Workers who use hand-held vibrating tools may experience finger blanching attacks due to episodic vasospasm in the digital vessels. In occupational medicine, the pathological consequences to the exposure to handtransmitted vibration are known as vibration induced white finger (VWF). In many cases, workers are recommended to use anti-vibration gloves and a standard procedure (ISO 108...

Contactless Spectral-dependent Measurement of Bulk Lifetime and Surface Recombination Velocity in Silicon Photovoltaic Materials

Title of Thesis: CONTACTLESS SPECTRAL-DEPENDENT MEASUREMENT OF BULK LIFETIME AND SURFACE RECOMBINATION VELOCITY IN SILICON PHOTOVOLTAIC MATERIALS John Frederick Roller, Master of Science 2016 Thesis Directed By: Dr. Mario Dagenais, ECE Charge carrier lifetime measurements in bulk or unfinished photovoltaic (PV) materials allow for a more accurate estimate of power conversion efficiency in compl...

Some Recent Advances in Contactless Silicon Characterization