Single crystats of CdTe and CdSe have been grown by vapcr
pnase deposition . Crystals grown in the from of platelets were studied
by X-ray diffraction Laue method. It was found llial the faU;:) of O1Te
with zincblcndc structure are of {tIl} type and tbose ofCdSe with
wunlile structure are of {l120} or {IOIO} types. Platelets of CdTe
have one smooth face and one rough face which can be distinguished
even wllh bear eyes. Chemical etching of CdTe revealed that the
smooth face is composed of Cd atoms and the other face of Te atoms.
However, chemical etching of CdSe did nOI show any polarity because
both types of crystalline planes {I120} and {lotO} are composed of
both alOms. The chemical solotion of Hel, MI. Br2 (2:3:0.3) was found
10 aCI 3. .. a suitable chemical polish ror CdSe single crystals.