LEED Investigations of Si MBE Onto Si(100)
Modern semiconductor technology requires increasingly smaller and thinner structures for new developments of higher density integrated circuits. Therefore the growth of very thin, fairly perfect epitaxial films onto the Si(100) surface is of special interest . The demand of high purity requires deposition in uhv onto a well defined surface. Since the nucleation and growth of the first layers determines the subsequent growth, this phase of epitaxy as well as the final roughness after growth are of particular importance. In order to study the process in-situ during growth, diffraction techniques are well suited, since they have a large working distance and provide average information over a large area of the surface. Normally RHEED is used to investigate epitaxial layer growth during deposition [7,8]. Unfortunately RHEED intensities are drastically affected by dynamic effects probably due to the grazing incidence and the high number of diffracted beams. Therefore in the present study LEED has been used with a high resolution instrument [9,10,11].
KeywordsLattice Factor Layer Distribution Ideal Layer Kinematic Approximation Convolution Algorithm
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