Highly Efficient Near-IR Photoluminescence of Er3+ Immobilized in Mesoporous SBA-15

Table 2 Comparison of Ω _t(t = 2, 4, 6)(×10⁻²⁰cm²) of Er³⁺ in some host materials

Host material	Ω ₂	Ω ₄	Ω ₆
Germanate glass [29]	5.81	0.85	0.28
Fluorophosphate glass [29]	2.91	1.63	1.26
Silicate glass [29]	4.23	1.04	0.61
Aluminate glass [29]	5.60	1.60	0.61
Fluoride glass [29]	2.91	1.27	1.11
Phosphate glass [30]	3.89	1.01	0.55
Tellurite glass [31]	5.05	1.45	1.22
Bismuth-based glass [32]	3.86	1.52	1.17
Er(PMS)_x-SBA-15	1.04	2.38	1.06