Liquid-phase epitaxial growth process of InGaAs on InP with rare-earth treatment

We will present high quality In0.53Ga0.47As which has been grown on semi- insulating (100) InP:Fe substrates by rare earth doped (Yb, Gd, and Er) liquid phase epitaxy using a graphite boat. The new earth ions, which are highly reactive, are thought to better impurities like O, C, and Si by reacting with these impurities and precipitating out in the melt, but not incorporating into the epitaxial layer to any significant amount.