“…The precursors used in the MOVPE growth include dimethylcadmium (Me 2 Cd) and di-iso-propyltelluride (Pr i 2 Te), which are at best noxious and at worst exceedingly toxic (MEL and LTEL are 0.025 and 0.1 mg m À3 , respectively) [2]. The major reaction products generated in the growth process also include the exceedingly toxic dimethylmercury Me 2 Hg (OES, LTEL 0.01 mg m À3 ) [2,3]. This stable species with a low affinity for oxygen, resulting in its stability in air and water, represents an extremely toxic and mobile compound towards man and the environment [4,5].…”