Preparation of Porous Silicon P-Type and Thermal Diffusivity Measurement Using Photoacoustic Technique
Journal Title: International Journal of Structural Glass and Advanced Materials Research - Year 2018, Vol 2, Issue 1
Abstract
Porous silicon (PSi) layers were formed on a p-type Si wafer. Electrochemical method was used to prepare 36 samples with three values of current density (10, 20 and 30) mA/cm2, each involved ( 20, 40, 60 and 80) min etching times the samples were heated to three selected temperatures of 100, 200 and 350°C in three groups. The first group covers 12 samples corresponding to 10 mA/cm2 while the other two correspond to the remaining values of current density respectively. Each annealing process for these sample groups lasted three hours in ambient air. The morphology of the layers, before and after annealing, formed by this method was investigated by Scanning Electron Microscope (SEM). Photoacoustic technique (PA) was employed carry out Thermal Diffusivity (TD) measurements. In this study, the porosity and thickness porous increased with increasing current density and etching time. While the thermal diffusivity TD increases with increasing annealing temperature.
Authors and Affiliations
Mohammed Jabbar Hussein, Suaad Sahib Hindal and Amany Akram Awaad
Keywords
Related Articles
- EP ID EP40374
- DOI 10.3844/sgamrsp.2018.191.197
- Views 271
- Downloads 0
Knowledge Acquisition of Existing Buildings by Means of Diagnostic Surveying. Case Studies
The issue of assessing the structural safety of existing buildings involves several problems when a unique and reliable strategy of modelling and analyzing is looked for. This is mainly related to the peculiarity of each...
Studies on Environmental Impact Assessment of Reinforced Concrete in Different Life Cycle Phases
Concrete is one of most used materials in construction and also one of the main responsible for the emission of carbon dioxide, or CO2, in the atmosphere. Thus, in order to study ways to reduce this impact, it is importa...
Cyclic Instability of Shape-Memory Alloys in Seismic Isolation Systems
Shape-memory alloys are being progressively introduced as kernel components in seismic retrofitting devices for civil engineering structures. In order to control the instability associated with the first mechanical cycle...
Special Issue on Current Challenges in Materials Design
This special issue of the International Journal of Structural Glass and Advanced Materials Research contains new contributions and the extended version of some selected papers presented in the 6th International Workshop...
Preparation of Porous Silicon P-Type and Thermal Diffusivity Measurement Using Photoacoustic Technique
Porous silicon (PSi) layers were formed on a p-type Si wafer. Electrochemical method was used to prepare 36 samples with three values of current density (10, 20 and 30) mA/cm2, each involved ( 20, 40, 60 and 80) min etch...