Well-defined triangular features which conformed to the crystallographic orientation were observed on the (111)Cd surface of as-grown epilayers which had been grown via isothermal vapor phase epitaxy. This was found to be a result of the preferential condensation of Te at defect sites during the controlled terminal cooling of the growth tube.

R.K.Bagai, M.Srivastava, K.Sharma, W.N.Borle: Journal of Crystal Growth, 1991, 112[2-3], 402-6