百度试题 题目 The crystalline structure of Silicon carbide is with alternating Si and C atoms covalently bonded together A.Cubic-like B.Diamond-like C.Hexagon-like D.Layer-like 相关知识点: 试题来源: 解析 Diamond-like 反馈 收藏
The structure and properties of silicon carbide depend on the preparation conditions. Amorphous SiC (a-SiC) can be easily prepared by low temperature (400 °C) chemical vapour deposition (CVD) from the SiH 4/CH 4 gas mixture, and hydrogen incorporation allows to decrease the defect density ...
Here we report the synthesis of nano- and micro-crystalline diamond-structured carbon, with cubic and hexagonal structure, by extracting silicon from silicon carbide in chlorine-containing gases at ambient pressure and temperatures not exceeding 1,000掳C. The presence of hydrogen in the gas mixture...
Crystalline Silicon Thin-Film Crystalline structure Crystalline structure Crystalline Transitional Material Crystalline water Crystalline water Crystalline water Crystalline water Crystalline wax Crystalline wax Crystalline wax crystalline-granular texture crystallinity crystallinity crystallinity Crystallins Crystallins crys...
The composition and structure of crystalline silicon implanted with carbon ions at high dose were studied using spectroscopic ellipsometry. A brief description of our spectroscopic ellipsometer system and the modeling method adopted for the analysis of the data are included. The crystal damage caused by...
They are formed by depositing silicon or silicon carbide from the gas phase onto the surface of a directly heated graphite tube. Typically the gas phase contains Si and H2 in a molar ratio of >=0.2 while the ratio of the width to the depth of the restrictions is >=2 : 1. The ...
Silicon carbide nanobelts have been prepared by a reaction of CH3CH2OH, SiCl4, and Li in an autoclave at 600 °C. According to X-ray powder diffraction, the nanobelts crystallize with the structure of 3C−SiC. Electron microscopy investigations have revealed that the nanobelts are usually 50...
Nanosize crystalline siliconfilms are fabricated by using highly hydrogen‐diluted silane as the reactive gas and activated with rf+dc double‐power sources, in a conventional plasma‐enhanced chemical‐vapor‐deposition system. The structure of the deposited films as studied by means of high‐resolutio...
Crystalline silicon (c-Si) photovoltaics has long been considered energy intensive and costly. Over the past decades, spectacular improvements along the manufacturing chain have made c-Si a low-cost source of electricity that can no longer be ignored. Over 125 GW of c-Si modules have been ...
Preliminary XPS and XRD studies of the 3C-SiC polycrystals (with the grain size of order of 100 μm) grown by the sublimation method were performed. The XRD data proved a dominant 3C-SiC structure accompanied by an admixture of the residual 6H-SiC phase. The main core-level photoelectron...