| 31. | A band gap is the range in a solid where no electron state can exist.
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| 32. | In a regular semiconductor crystal, the band gap is fixed owing to continuous energy states.
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| 33. | Most ( though not all, see Mott insulator ) insulators have a large band gap.
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| 34. | When Wigner crystallization occurs, jellium acquires a band gap.
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| 35. | The addition of silicon to hafnium oxide increases the band gap, while decreasing the dielectric constant.
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| 36. | However, it performs poorly ( providing limited brightness ) because it has an indirect band gap.
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| 37. | Using this method, the local electronic structure of semiconductors in the band gap can be probed.
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| 38. | In indirect band gap semiconductors, the carrier lifetime strongly depends on the concentration of recombination centers.
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| 39. | It can be shown that the energies of these states all lie within the band gap.
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| 40. | The light must pass through the band gap.
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