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Růst InP metodou LPE s přídavkem prvků vzácných zemin do taveniny
Grym, Jan ; Procházková, Olga ; Zavadil, Jiří ; Žďánský, Karel
Addition of REs to the growth melt is known to have purifying effect on AIIIBV LPE layers. Each member of REs family acts in its own way. Small addition of Tb, Dy, Tm, and Pr leads to pronounced gettering of shallow donors, the high purity n-type InP can be grown. Exceeding certain concentration, reversal of conductivity type from n to p occurs. Addition of Tm during growth on InP:Fe substrates always results in the preparation of semi-insulating layers due to Fe out-diffusion mediated by RE admixture.
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Příprava a vlastnosti heterostruktur GaInP.sub.2./sub./GaAs
Nohavica, Dušan ; Gladkov, Petar ; Žďánský, Karel
Growth of the Ga.sub.x./sub.In.sub.1-x./sub.P/GaAs(100) heterostructures from the liquid phase was optimized at 800.sup.o./sup.C to obtain thick epitaxial layers. Experimental conditions for growth of the mirror like, morphological defects free structures are very narrow. Capping of the ternary layer by GaAs grown from the Bi or Bi-Ga melt was investigated as well. New model of the substrate planarity related defects has been suggested.
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