TY - GEN
T1 - Real-time viewing of dynamic processes on CdTe surfaces at elevated temperature
AU - Smith, David
AU - Vogl, R.
AU - Lu, Ping
PY - 1993
Y1 - 1993
N2 - Online video recording with a high-resolution electron microscope has been used to study real-time atomic events occurring at cadmium telluride surfaces over a range of temperatures from 27°C to 500°C. Using the profile imaging mode of observation, different types of surface activity have been documented on (001), (111) and (110) surfaces. For example, the (001) surfaces displayed reversible phase transformations between 2×1 and 3×1 reconstruction at a transition temperature of about 200°C. The (111) surfaces exhibited sublimation by a ledge mechanism that depended upon the terminating surface: layer-by-layer removal invariably occurred for (110) surface terminations whereas bilayer removal was usually seen for terminations by (100) surfaces. Finally, the (110) surface rearranged by a hopping mechanism, but no substantial loss of material was observed.
AB - Online video recording with a high-resolution electron microscope has been used to study real-time atomic events occurring at cadmium telluride surfaces over a range of temperatures from 27°C to 500°C. Using the profile imaging mode of observation, different types of surface activity have been documented on (001), (111) and (110) surfaces. For example, the (001) surfaces displayed reversible phase transformations between 2×1 and 3×1 reconstruction at a transition temperature of about 200°C. The (111) surfaces exhibited sublimation by a ledge mechanism that depended upon the terminating surface: layer-by-layer removal invariably occurred for (110) surface terminations whereas bilayer removal was usually seen for terminations by (100) surfaces. Finally, the (110) surface rearranged by a hopping mechanism, but no substantial loss of material was observed.
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M3 - Conference contribution
AN - SCOPUS:0027262096
SN - 1558991905
T3 - Materials Research Society Symposium Proceedings
SP - 133
EP - 138
BT - Materials Research Society Symposium Proceedings
PB - Publ by Materials Research Society
T2 - Symposium on Atomic-scale Imaging of Surfaces and Interfaces
Y2 - 30 November 1992 through 2 December 1992
ER -