Liquid-phase epitaxy and characterization of Si1−xGex layers on Si substrates

Abstract
Liquid‐phase epitaxy allows SiGe alloys of good quality to be grown on Si substrates. We deposit single crystalline, n‐type Si1−xGex films with 0.7<x7 cm−2. Photoluminescence measurements show well‐resolved peaks with the smallest linewidths reported so far for epitaxial SiGe. Hall‐effect measurements yield electron concentrations around 1×1016 cm−3 and room‐temperature electron mobilities of up to 340 cm2/V s.