Journal of Nanomaterials / 2013 / Article / Tab 4

Research Article

Effect of Erbium Nanoparticles on Optical Properties of Zinc Borotellurite Glass System

Table 4

Indirect optical band gap ( ), direct optical band gap ( ), and Urbach energy ( ) of erbium NPs doped glass samples.

Sample, (eV)

0.0003.2803.6000.185
0.0053.8824.4400.265
0.0103.8764.3900.270
0.0203.8704.3850.272
0.0303.8604.3800.273
0.0403.8504.3700.271
0.0503.8404.3600.276

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