Enhanced photoluminescence properties of Ga-doped V2O5 nanorods via defect structures

Structure and Photoluminescence Properties of Thermally Synthesized V2O5 and Al-Doped V2O5 Nanostructures

“…However, the zero-valent metallic ion can also show the influence in the photoluminescence property. Compared to previous literature [ 7 , 10 , 13 , 14 , 15 , 16 ], this work shows for the first time the metallic Al powders acting as dopants and doping V 2 O 5 nanostructures. This implies that the zero-valent and/or tri-valent Al ions can be observed, and their influence in the photoluminescence property of the V 2 O 5 nanostructures can be studied.…”

“…The AV15 NSs show a similar splitting Δ-value (7.4 eV), indicating that the Al dopants do not affect the V 2 O 5 orthorhombic structure. The O 1s peak at 529.3 eV is attributed to the oxygen ions (O L ) associated with the V–O bonds in the V 2 O 5 structures [ 28 , 29 ]; the peak at 530.7 eV (O C ) is attributed to the chemisorbed oxygen on the surface of the NSs [ 7 ]. The energy difference between V 2p 3/2 and O L is about 12.9 eV, indicating the formation of the V 2 O 5 phase [ 29 ].…”

“…Table 4 shows the influence in the photoluminescence intensity of the V 2 O 5 by different dopants, including metallic Al, metallic Ga [ 7 ], aluminum nitrate nonahydrate (Al(NO 3 ) 3 ·9H 2 O) [ 10 ], erbium nitrate pentahydrate (Er(NO 3 ) 3 ·5H 2 O) [ 13 ], cobalt sulfate heptahydrate (CoSO 4 ·7H 2 O) [ 14 ], gadolinium oxide (Gd 2 O 3 ) [ 16 ], neodymium oxide (Nd 2 O 3 ) [ 16 ], aluminum nitrate (Al(NO 3 ) 3 ) [ 24 ], and aluminium oxide (Al 2 O 3 ) [ 26 ]. Besides the Ga dopants, the PL intensities of V 2 O 5 decrease with the zero-valent Al the same as the results of the tri-valent elements.…”

“…The conduction band that has split off and the -defects provide a flexible pathway for luminescence. Doping with elements and the formation of the core-shell nanostructures modify the photoluminescence properties [ 7 , 8 ]. Many works have reported upon methods of fabricating V 2 O 5 , which are: atomic layer chemical vapor deposition [ 9 ], the sol-gel process [ 10 ], thermal deposition [ 11 ], the hydrothermal process [ 12 ], and the thermal evaporation process [ 7 , 8 ].…”

“…Doping with elements and the formation of the core-shell nanostructures modify the photoluminescence properties [ 7 , 8 ]. Many works have reported upon methods of fabricating V 2 O 5 , which are: atomic layer chemical vapor deposition [ 9 ], the sol-gel process [ 10 ], thermal deposition [ 11 ], the hydrothermal process [ 12 ], and the thermal evaporation process [ 7 , 8 ]. The photoluminescence property of V 2 O 5 can be modified by the different dopants, such as Er [ 13 ], Co [ 14 ], Nd [ 15 , 16 ], Gd [ 16 ]; Al [ 10 ], and Ga [ 7 ].…”