Tuning the Refractive Index and Optical Band Gap of Silk Fibroin Films by Electron Irradiation

<table class="table-group" id="tab2"><tr><td><table class="table"><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr class="thead"><td align="left">Sample</td><td align="center">Band gap energy (eV)</td><td align="center">Urbach energy (eV)</td></tr><tr><td class="thead-hr" colspan="3"><hr/></td></tr><tr><td align="left">Virgin</td><td align="center">4.18</td><td align="center">0.524</td></tr><tr><td align="left">50 kGy</td><td align="center">4.12</td><td align="center">0.452</td></tr><tr><td align="left">100 kGy</td><td align="center">4.08</td><td align="center">0.430</td></tr><tr><td align="left">150 kGy</td><td align="center">3.94</td><td align="center">0.426</td></tr><tr class="table-tr"><td colspan="3"><hr class="tbody-hr"/></td></tr></table></td></tr></table>

Band gap energy and Urbach energy of virgin and electron irradiated silk fibroin films.

Journal of Spectroscopy

tab2

Table 2

Table 2: Tuning the Refractive Index and Optical Band Gap of Silk Fibroin Films by Electron Irradiation 