wizyta

od 2020-09-20

Title: Structural and XPS characterization of ALD Al2O3 coated porous silicon

Source: Vacuum

Year : 2015

Abstract:

Al2O3 thin films were grown on highly-doped p-Si (100) macro- and mesoporous structures by atomic layer deposition (ALD) using trimethylaluminum (TMA) and water H2O as precursors at 300 degrees C. The porous silicon (PSi) samples were fabricated utilizing a metal-assisted chemical etching process (MACE). The morphology of the deposited films and initial silicon nanostructures were investigated by means of scanning electron microscopy (SEM) with energy dispersive X-ray spectroscopy (EDX). X-ray photoelectron spectroscopy (XPS) was used to analyze the chemical elemental composition by observing the behavior of the Al 2p, O 1s and C 1s lines. Calculated Auger parameter and binding energy analysis confirmed Al2O3 formation. The measurement of band gap energies of Al2O3 was performed.
(C) 2014 Elsevier Ltd. All rights reserved.

DOI: 10.1016/j.vacuum.2014.12.015   (Pobrane:  2019-10-15)