Showing papers by "David Cameron published in 1981"
TL;DR: In this paper, the deposition of cubic fluorite structure group II fluorides onto several well known semiconductors has been studied under clean, controlled, monitored conditions in an MBE system.
Abstract: The deposition of cubic fluorite structure group II fluorides onto several well known semiconductors has been studied under clean, controlled, monitored conditions in an MBE system. The fluoride beams were generated from a single Knudsen effusion oven for each fluoride. Modulated beam mass spectrometry (MBMS) confirmed that the fluorides sublimed as group II molecules. Fluoride films therefore grow by a simple process of molecular condensation from the fluoride beam. BaF2 films deposited onto semiconductor surfaces held at room temperature were polycrystalline. However, growth at temperatures≳200 °C onto ion‐bombarded, annealed InP and CdTe surfaces resulted in twin‐free epitaxial films with the parallel epitaxial relation: (001)BaF2∥(001)InP, CdTe, [100]BaF2∥[100]InP, CdTe. Growth onto InP(001) surfaces subjected to no ion‐bombardment annealing treatment also resulted in twin free epitaxial films with the same epitaxial relation. In situ electron diffraction studies during fluoride film growth combined w...
156 citations