The sheet resistance, effective carrier concentration, and Hall mobility of in situ boronand phosphorus-doped polycrystalline Si0.822yGe0.18Cy films are presented for carbon contents between 0% and 4%. Phosphorus and boron doping levels of 4310 and 2310 cm were achieved for the nand p-type layers, respectively, and remained largely unaffected by carbon content. The phosphorus-doped films showed...

Impressive performance of hybrid perovskite solar cells reported in recent years still awaits a comprehensive understanding of its microscopic origins. In this work, the intrinsic Hall mobility and photocarrier recombination coefficient are directly measured in these materials in steady-state transport studies. The results show that electron-hole recombination and carrier trapping rates in hybr...

This paper considers small-amplitude fluctuations in the Hall-effect thruster. To predict which fluctuations could be important to transport, the growth of a disturbance is determined as a function of real frequency and propagation angle. In the simple case, strong growth is predicted for disturbances that are azimuthal. In the general case, strong growth is predicted for various propagation an...

One of the goals of the PARASITICS project was the evaluation of decisive physical models in the high temperature range (300 K – 700 K) by comparison between simulation and electrical measurements of suitable test structures. Various van der Pauw devices were examined to test the microscopic-based mobility model of Schenk [1]. In order to make the comparison complete, calculated Hall factors as...

Increasing the conductivity of polycrystalline zinc oxide fi lms without impacting the transparency is a key aspect in the race to fi nd affordable and high quality material as replacement of indium-containing oxides. Usually, ZnO fi lm conductivity is provided by a high doping and electron concentration, detrimental to transparency, because of free carrier absorption. Here we show that hydroge...

Why do some dynasties maintain the fortune of their founders while others completely squander it in few generations? To address this question, we use a simple deterministic microfounded model based on two main elements: the “hunger for accumulation” and the “willingness to exert effort”. Contrary to models with capital market imperfections, our setting points to the crucial role of our two key ...

The ability to control conductivity in semiconductor nanostructures is often challenged by surface states trapping the majority of the charge carriers. Addressing this challenge requires a reliable method for assessing electrical properties such as carrier concentration and mobility. Unfortunately, here we are facing another challenge, as the Hall effect is geometrically inapplicable to nanowir...

this is a cross-sectional study aiming at analyzing the relation between falling and domestic environmental -risk factors in community-dwelling elderly.the study consisted of 243 randomly chosen community-dwelling elderly over 65 years of age living around a health care center in central selcuklu, konya. data were collected with a questionnaire form including socio-demographic and other charact...