AlGaAsSb and AlGaInAsSb Growth from Sb-rich Solutions

Abstract

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Control of the critical supercooling in LPE

“…There, GaSb is exposed to appreciable erosion in the contact with quaternary In-Ga-As-Sb or Al-Ga-As-Sb liquid phases. 2,3 Obviously, to form a sharp boundary during the fabrication of high quality heterostructures it is necessary to suppress the erosion processes. Usually this is achieved by reducing the growth temperature, by growing on a "cold" substrate or by growing an additional layer with an intermediate composition that decreases the degree of non-equilibrium.…”

“…For example, ∆T cr is only about 4-5°C when AlGaAsSb solid solutions are grown from Sbrich solvents. 3,5 This value has proved to be insufficient for a reliable suppression of the substrate erosion. Therefore, in practice, it is advantageous to have a way to control ∆T cr during the growth of device's structures based on different materials.…”

“…3,7 In the present article, we present the experimental results of adding Sb to control the critical supercooling in In-P liquid phases.…”

Some perspectives and peculiarities of the LPE growth of multicomponent Sb-based solid solutions from pentanary liquid phases

“…[2][3][4][5] However these materials can be grown from Sb-rich liquid phases [5][6][7][8] The use of pentanary liquid phases to grow Sb-based solid solutions could improve the quality of these materials and of devices made from them. [2][3][4][5] However these materials can be grown from Sb-rich liquid phases [5][6][7][8] The use of pentanary liquid phases to grow Sb-based solid solutions could improve the quality of these materials and of devices made from them.…”