Behavior of the Melt in the Vertical Bridgman Method with a Low Axial Temperature Gradient

Kozhemyakin, G. N.; Artemyev, V. K.; Стрелов, В. И.; Sidorov, V. S.; Korobeynikova, E. N.

doi:10.1134/s1027451018020118

Cited by 1 publication

(1 citation statement)

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“…Kozhemyakin et al [15] believed that a smaller temperature gradient could reduce the convection velocity in the melt and inhibit the generation of fringes in the crystal. Wu et al [16] suggested that a larger temperature gradient could effectively inhibit the visible inclusions formed by component supercooling.…”

Section: Introductionmentioning

confidence: 99%

Effect of temperature gradient on microstructure and properties of GaSb crystals grown with Bridgman method

He¹,

Gao²,

Han³

et al. 2020

Mater. Res. Express

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GaSb crystal ingots were grown with vertical Bridgman method. The effects of temperature gradient on the structure and properties of GaSb crystals were investigated. When the temperature gradient increased from 5 to 7°C cm −1 , the crystallinity of the ingot improved, the dislocation density decreased by 55%, from 3928 to 1785 cm −2 ; the carrier mobility increased by 29.6%, from 868 to 1125 cm 2 V −1 ·s −1 ; the resistivity decreased 50.6%, from 12.45 to 6.332×10 -3 Ω·cm; the infrared transmission increased from 27% to 32%. When the temperature gradient increased from to 7 to 9°C cm −1 , the crystallinity of the ingot deteriorated obviously, the dislocation density increased 4.38 times, from 3928 to 9609 cm −2 ; the carrier mobility decreased by 52.4%, from 1125 to 738 cm 2 V −1 ·s −1 ; the resistivity increased 6.2 times, from 6.332 to 23.94×10 -3 Ω·cm; the infrared transmission decreased from 32% to 25%.

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Section: Introductionmentioning

confidence: 99%