Research Article
Optical Properties of Malachite Green Dye Doped SiO2 Glasses: Effect of Transition Metal (Fe-I) Used as a Codopant
| Sample code | MG conc. (×10−5) M | Fe conc. M |
aPeak Em. wavelength () nm |
bEffective bandwidth () nm |
cQY () |
dDecay time (τ) ns |
eRadiative trans. prob. () (×108) s−1 |
fNonradiative trans. prob. () (×108) s−1 |
| FxM1 glass, x = 1–4
| F1M1 | 1 | 0.01 | 620 | 66.93 | | | | | F2M1 | 1 | 0.02 | 621 | 76.39 | | | | | F3M1 | 1 | 0.03 | 628 | 85.06 | 0.13 | 3.29 | 0.40 | 2.63 | F4M1 | 1 | 0.04 | 616 | 60.37 | | | | | M1 | 1 | 0.00 | 573 | 133.36 | 0.06 | 3.58 | 0.17 | 2.62 |
| FxM4 glass, x = 1–4
| F1M4 | 50 | 0.01 | 620 | 82.30 | | | | | F2M4 | 50 | 0.02 | 626 | 61.67 | | | | | F3M4 | 50 | 0.03 | 624 | 62.96 | 0.05 | 3.59 | 0.13 | 2.66 | F4M4 | 50 | 0.04 | 626 | 64.94 | | | | | M4 | 50 | 0.00 | 585 | 132.69 | 0.07 | 3.01 | 0.21 | 3.09 |
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Peak emission wavelength (), beffective band width (), cfluorescence quantum yield (),
dradiative decay time (τ), eradiative rate (), and fnonradiative transition probability () of emission in Fe-MG doped SiO2 glasses.
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