Linear Optical Properties of Zinc Borotellurite Glass Doped with Lanthanum Oxide Nanoparticles for Optoelectronic and Photonic Application

Table 3

Direct and indirect energy band gap of [(TeO₂)_0.7(B₂O₃)_0.3]_0.7(ZnO)_0.3 (La₂O₃ NPs)_x with different molar fraction of La NPs.

La2O3 NPs molar fraction	Direct band gap, (eV)	Indirect band gap, (eV)
0.01	3.30	2.70
0.02	3.50	3.05
0.03	3.46	2.90
0.04	3.47	3.00
0.05	3.52	3.20