Materials Science Forum, Vol.384-3, 43-50, 2002
Growth and characterisation of Mg-based low dimensional systems for blue-green optoelectronics
In this paper a brief overview of the state-of-the-art of the growth and characterisation of Mg-based II-VI heterostructures is reported. Recent studies on MgSe binary compound, ZnMgSe ternary alloy and ZnSe/ZnMgSe multiple quantum wells (MQWs) grown by metalorganic vapour phase epitaxy MOVPE are presented. The low pressure MOVPE growth of MgSe, ZnMgSe and ZnSe/ZnMgSe MQWs on (100)GaAs by using ditertiarybuthylselenide, dimethylzinc:triethylammine (Me2Zn:Et3N), and bismethylcyclopentadienylmagnesium [(MeCp)(2)Mg] as Se, Zn and Mg precursors, respectively is reported. MgSe layers turned out to be mosaics made of (111)- and (100)-oriented MgSe crystals in their rocksalt phase; no signatures of the zincblend (ZB) phase was observed. ZnMgSe ternary epilayers were however grown in the ZB phase throughout the compositional range studied (0.10