Fig. 19
The size-dependent a-C(:H) particle band gap evolution presented for t [yr] × G0 = 104 (short-dashed), 106 (solid) and 107 (long-dashed). The colours indicate the band gap of the initial material, Eg(0). The black curve gives the minimum size-dependent band gap. The two horizontal lines indicate a ≃5% lower limit to the H content.
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