Rare-earth-doped TiO₂ rutile as a promising ferromagnetic alloy for visible light absorption in solar cells: first principle insights

Abstract

The electronic structure and magneto-optic properties of TiO2 (rutile) doped with rare-earth elements are explored using a first-principles all-electron full-potential augmented spherical-wave method, to examine their potential use as a spintronic and optoelectronic system.

Electronic, magnetic, optical and thermoelectric properties of co-doped Sn1−2xMnxAxO2(A = Mo, Tc): a first principles insight

“…The high value of the absorption coefficient in the ultraviolet region contributes to an extremely efficient photon conversion process, which means that a quantum cut may be observed in the systems co-doped with transition metals. 17,54,55 This result provides a new idea for developing and using SnO 2 -based optics.…”

Band Gap Tuning in Transition Metal and Rare-Earth-Ion-Doped TiO2, CeO2, and SnO2 Nanoparticles

“…Due to the exchange interactions between the substituted doping ions on the Ti sites, there appears a magnetic moment, a spontaneous magnetization M different from zero, which increases with the increase in the doping concentration x (see Figure 5 ). The observed RTFM in ion-doped bulk TiO is reported in [ 43 , 46 , 69 ]. Moreover, in TM- and RE-doped bulk TiO decreases (see Figure 6 ) in good qualitative agreement with the experimental data [ 11 , 38 , 43 ].…”

“…Again, there are some discrepancies. First-principle studies are used to analyze the optical properties of TiO , SnO , and CeO doped with TM [ 38 , 39 , 40 , 41 , 42 , 43 ] and RE ions [ 44 , 45 , 46 , 47 ].…”

Ferromagnetic alloy for high-efficiency photovoltaic conversion in solar cells: first-principles insights when doping SnO2 rutile with coupled Eu–Gd

“…In general, the single or double insertion of rare earth species inside a hot matrix allows quantum cutting of highenergy photons. [57][58][59] Moreover, for the photon conversion process to be efficient, it requires high absorption of UV photons, which is the case for the coupled Eu-Gd that would appear to be more promising in the hot matrix of SnO 2 rutile. Already, this couple has shown great power when inserted into a LiGdF 4 matrix.…”