Influence of Fe-doping on the structural and photoluminescence properties and on the band-gap narrowing of SnO2 nanoparticles

Jithin, P. V.; Sudheendran, K.; Sankaran, Kamatchi Jothiramalingam; Kurian, Joji

doi:10.1016/j.optmat.2021.111367

Cited by 23 publications

(1 citation statement)

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“…However, experimentally, the synthesis and stabilization of higher-symmetry SnO 2 polymorphs is complicated. Few studies report the presence of other SnO 2 phases for Fe-doped SnO 2 , owing to the substitution of Sn by Fe ions [ 82 ], where the rutile phase co-exists with a small amount of α-PbO 2 ( Pbcn ) secondary phase. After annealing at 800 °C, they observed that only traces of the SnO 2 orthorhombic phase remained, which confirms the low stability of the orthorhombic phase at high temperatures compared to the SnO 2 rutile structure.…”

Section: Electronic Structure Of Snomentioning

confidence: 99%

Tailoring SnO2 Defect States and Structure: Reviewing Bottom-Up Approaches to Control Size, Morphology, Electronic and Electrochemical Properties for Application in Batteries

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Rauwel

2023

Materials

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Tin oxide (SnO2) is a versatile n-type semiconductor with a wide bandgap of 3.6 eV that varies as a function of its polymorph, i.e., rutile, cubic or orthorhombic. In this review, we survey the crystal and electronic structures, bandgap and defect states of SnO2. Subsequently, the significance of the defect states on the optical properties of SnO2 is overviewed. Furthermore, we examine the influence of growth methods on the morphology and phase stabilization of SnO2 for both thin-film deposition and nanoparticle synthesis. In general, thin-film growth techniques allow the stabilization of high-pressure SnO2 phases via substrate-induced strain or doping. On the other hand, sol–gel synthesis allows precipitating rutile-SnO2 nanostructures with high specific surfaces. These nanostructures display interesting electrochemical properties that are systematically examined in terms of their applicability to Li-ion battery anodes. Finally, the outlook provides the perspectives of SnO2 as a candidate material for Li-ion batteries, while addressing its sustainability.

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Section: Electronic Structure Of Snomentioning

confidence: 99%