화학공학소재연구정보센터
Journal of Crystal Growth, Vol.477, 50-53, 2017
Real-time algorithm to determine the period and phase of Reflection High-Energy Electron Diffraction (RHEED) intensity oscillations during epitaxial growth
We present and discuss an algorithm that reliably determines the period and phase of RHEED intensity oscillations. Based on multiple running averages of the data, this algorithm is not affected by damping or rapid arbitrary changes of the average intensity on a time scale larger than the growth oscillations. It is therefore suitable for a general and precise determination of the deposited layer thickness, at least in homoepitaxy. An additional pre-filtering running average allows the removal of the periodic modulation induced in pulsed laser deposition (PLD). (C) 2016 Elsevier B.V. All rights reserved.