Abstract
Cd0.96Zn0.04Te (111) wafers were precisely ground by #800, #1500, #3000, and #5000 diamond grinding wheel. For comparison, Cd0.96Zn0.04Te (110) wafers were machined by lapping, mechanical polishing, and chemical mechanical polishing. High-resolution environmental scanning electron microscopy equipped with energy dispersive spectroscopy and optical interference surface profiler both were employed to investigate the surface quality and material removal mechanism. The results show that the material removal mechanism of #800 grinding wheel is abrasive wear, fatigue wear, and adhesive wear, and that of #1500 is abrasive wear and fatigue wear. Both the material removal mechanism of #3000 and #5000 grinding wheel are abrasive wear, leading to the excellent ductile removal precision grinding. While the material removal mechanism of CMP on CdZnTe wafers is firstly chemical resolving reaction and secondly mechanical carrying action. Moreover, precision grinding exhibits high-efficiency character and eliminates the imbedding of free abrasives of Al2O3 and SiO2.
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Zhang, Z., Meng, Y., Guo, D. et al. Material removal mechanism of precision grinding of soft-brittle CdZnTe wafers. Int J Adv Manuf Technol 46, 563–569 (2010). https://doi.org/10.1007/s00170-009-2114-8
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DOI: https://doi.org/10.1007/s00170-009-2114-8