Figure 5

Tauc's relation: (αhυ)1/2 versus hυ and (αhυ)2 versus hυ for indirect (a) and direct (b) band gap determination, according to Eq. 6.
Tauc's relation: (αhυ)1/2 versus hυ and (αhυ)2 versus hυ for indirect (a) and direct (b) band gap determination, according to Eq. 6.