A Comparison of Modifications Induced by Li³⁺ and Ag¹⁴⁺ Ion Beam in Spectroscopic Properties of Bismuth Alumino-Borosilicate Glass Thin Films

Table 2

Showing the fluence ranges and the values of optical band gap and Urbach of samples of BBiSA and BBiSB series irradiated with Ag¹⁴⁺ and Li ion.

Ag^14+ ion irradiated					Li^3+ ion irradiated
Fluence (ions cm^−2)	BBiSA series		BBiSB series			BBiSA series		BBiSB series
	𝐸𝑔 (eV)	Δ𝐸 (eV)	𝐸𝑔  (eV)	Δ𝐸 (eV)	Fluence (ions cm^−2)	𝐸𝑔 (eV)	Δ𝐸 (eV)	𝐸𝑔 (eV)	Δ𝐸 (eV)
0	2.84	1.91	2.06	2.78	0	2.84	1.91	2.06	2.78
1 × 10^12	2.47	2.79	1.16	2.89	5 × 10^12	2.82	2.67	1.93	2.82
5 × 10^12	1.71	2.82	1.12	2.90	1 × 10^13	2.50	2.79	1.82	2.83
1 × 10^13	1.55	2.84	1.05	2.93	5 × 10^13	2.36	2.90	1.66	2.87
3 × 10^13	1.49	2.89	1.01	2.99	1 × 10^14	2.28	2.85	1.58	2.99