Luminescence of coated α-Fe2O3 nanoparticles

Effect of Cr doping on the photoelectrochemical performance of hematite nanorod photoanodes

“…Moreover, it was reported that the particle size could greatly affect the photoluminescence of a-Fe 2 O 3 . Thus, it is reasonable that the emission position of a-Fe 2 O 3 nanorod films (either undoped or doped) in the present study differs from those of a-Fe 2 O 3 nanoparticles reported by other studies [42,43]. In contrast to the observation of an unchanged emission position, the photoluminescence intensity of Cr-doped aFe 2 O 3 nanorod films was greatly influenced by Cr doping (Figure 4(b) inset).…”

Fluorescence From Metallic Silver and Iron Nanoparticles Prepared by Exploding Wire Technique

“…Similar explanation was also reported in systems such as silver nanoparticles in water phase [18], and coated -Fe 2 O 3 nanoparticles [19].…”

“…The interface electrons were proposed to be the source of the observed fluorescence [18]. Far from the fluorescence from noble metals, Fei et al [19] observed for the first time the fluorescence from -Fe 2 O 3 nanoparticles -coated with a layer of organic molecules. They attributed the fluorescence to bound -exciton emission, as also observed for other typical semiconductor nanoparticles.…”

SiO2/Ta2O5 Core–Shell Nanowires and Nanotubes

“…The peak at 301 nm (4.1 eV, violet region) in the CL spectrum originates from the d‐band transition between the e g and t 2g states, induced by ligand‐field splitting (see http://www.wiley-vch.de/contents/jc_2002/2006/z602228_s.pdf). 21 A similar phenomenon is found in other materials, such as α‐Fe 2 O 3 nanoparticles 22. The violet peak derived from the oxygen deficiency transition inside the Ta 2 O 5 is also the factor for the CL peak at 301 nm.…”