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