CHEMICAL PREPARATION OF ORDERED CDTE(110) AND (100) SURFACES USING ATOMIC-HYDROGEN

We have studied reaction of oxide and contaminant layers on CdTe(100) and (110) surfaces with atomic hydrogen using a variety of analytical techniques. For these surfaces we observe a rapid, quantitative remova l of oxide overlayers at room temperature resulting in surfaces free o f contaminants with sufficient surface order to produce clear LEED pat terns. In situ photoluminescence spectroscopy allows direct correlatio n of the enhancement of radiative carrier recombination with the produ ction of an ordered (100)c(2 X 2) surface by such means.