Enhanced blue emission of SnO2 doped phosphate glasses by Gd2O3 co-doping

UV Emission of Gd3+ in the Presence of Cu2+: Towards Luminescence Quenching through Quantum Cutting?

“…Thus, it seems that the presence of Gd 3 + promotes, to some extent, the manifestation of luminescent copper. A similar result was recently reported by Tong et al [25] for SnO 2 for gadolinium doping promoting lower oxidation states in transition-metal ions is not well understood at present. However, although the data in Figure 3 suggests that some Cu + is present in the GdCu0.2-0.6 glasses, the comparable intensities of the PL bands indicate that there is an equivalent amount present in each of the glasses.…”

Emission properties and temperature dependence of Cu+ luminescence in the CaO–CaF2–P2O5 ternary glass system co-doped with CuO and SnO

“…Clearly, addition of 10 mol% of the dopants produces considerable red shift in glass absorption edge. As similarly observed in oxide phosphate-based glasses, a contribution to deep-UV absorption is herein expected from twofoldcoordinated Sn centers (referred to as =Sn¨, the two paired electrons being represented by ¨, and the bond with the two oxygen atoms by =) due to electronic transitions from the ground singlet state S 0 to a first excited singlet state S 1 [18,[21][22][23][24]. However, the main species accountable for near-UV absorption are the Cu + ions integrated into the matrix [1,4,8,10,18,19,21].…”

Impact of metal electrode on charge transport behavior of metal-Gd2O3 systems

“…In this regard, the temperature dependent electrical conductivity measurements can reveal the underlying charge transport mechanism. Previously, temperature dependent behaviors of electrical properties of oxide semiconductors such as CeO 2 , ZnO and SrTiO 3 have been reported in the literature [7,8]. However, no report has been found in the literature about the hopping conduction mechanism of Gd 2 O 3 with different metal electrodes according to the best of our knowledge.…”

“…It has wide band gap (5.4 eV), high dielectric constant (k ¼ 18) and high refractive index (n ¼ 2) [2,3], therefore can be used for sensors, optoelectronics, data storage devices and luminescence applications [4e6]. Apart from optical, mechanical and chemical properties, Gd 2 O 3 has rich chemistry of intrinsic defects such as oxygen vacancies and Gd interstitials [7].…”