1. The manufacture of a perfect crystal of a material is physically impossible. 2. Single perfect crystals may contain solvent of crystallisation in the crystal lattice. 3. A perfect crystal consists of a regular and periodic geometric lattice. 4. The almost perfect crystal structure yields the highest light-to-electricity conversion efficiency for silicon. 5. The crystal's lattice structures match up, resembling a perfect crystal , with corresponding luminosity. 6. Perfect crystals are an ideal subject for such calculations because of their high periodicity.7. Out of interest, could it happen in a perfect crystal ? 8. This means that their properties cannot be inferred from those of a perfect crystal . 9. Scientific descriptions typically assume a perfect crystal , extrapolating from that point based on defect prevalence. 10. However, given sufficient defects, extrapolation from perfect crystals fails.
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