What question did this study set out to answer?

To elucidate the effects of thermal field distribution and growth parameters on solid–liquid interface evolution and defect formation in vertical gradient freeze indium phosphide single crystals.

August 20, 2026ACS OmegaOpen Access

Thermal Field Optimizationand Structural Defect Suppressionin VGF-InP Single Crystals: A Study Based on Orthogonal Design andCGSim Simulation

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Authors

HWHua WeiON Semiconductor (United States)ZDZhuochen Duan BYBin Yang

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Implication

Simulation and experimental study reveals optimized growth parameters in vertical gradient freeze indium phosphide crystals, suggesting crucible angle dominantly regulates thermal defects.

Key Points

To elucidate the effects of thermal field distribution and growth parameters on solid–liquid interface evolution and defect formation in vertical gradient freeze indium phosphide single crystals.
Simulated thermal and flow fields, thermal stress, and dislocation distribution in a 4-inch vertical gradient freeze (VGF) furnace using CGSim software across different axial temperature gradients, growth rates, and crucible angles.
Optimized growth parameters using orthogonal experimental design and subsequently synthesized InP single crystals.
Evaluated crystal structural quality and defect suppression using dislocation density measurements, photoluminescence (PL) spectroscopy, X-ray diffraction (XRD), and Raman spectroscopy.
Crucible angle and growth rate were determined to primarily govern melt flow symmetry, velocity uniformity, and thermal stress accumulation.
Established an optimization hierarchy for suppressing dislocation multiplication and stabilizing the growth interface: crucible angle > growth rate > axial temperature gradient.
Experimental crystal growth verified that optimized parameters successfully produced low-dislocation, low-stress InP single crystals.

Cite This Study

Wei et al. (2026) studied this question.

synapsesocial.com/papers/6a86b5eb8a91293e6a1cd844 https://doi.org/10.1021/acsomega.6c04077

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Implication

Simulation and experimental study reveals optimized growth parameters in vertical gradient freeze indium phosphide crystals, suggesting crucible angle dominantly regulates thermal defects.

Thermal Field Optimizationand Structural Defect Suppressionin VGF-InP Single Crystals: A Study Based on Orthogonal Design andCGSim Simulation

Discussion

Member takes

Implication

Key Points

Cite This Study

Thermal Field Optimizationand Structural Defect Suppressionin VGF-InP Single Crystals: A Study Based on Orthogonal Design andCGSim Simulation

Discussion

Member takes

Implication

Key Points

Cite This Study

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