Improved optical response for N-doped anatase TiO2 films prepared by pulsed laser deposition in N2/NH3/O2 mixture

Improved optical response and photocatalysis for N-doped titanium oxide (TiO2) films prepared by oxidation of TiN

“…The optical absorption spectra showed the nitrogen-doped TiO 2 absorbed the light on the onset around 500 nm. Others also reported similar results with the onset wavelength less than 550 nm [11][12][13][14][15]. This study focuses on the band structure modification of TiO 2 by nitrogen doping.…”

“…2(a). The peak at 402.5 eV indicates N atoms incorporating into the TiO 2 lattices as absorbed N 2 molecule, the peak at 399.8 eV corresponds to N-O bonds, while the peak at 396.8 eV was assigned as b-N, corresponding to Ti-N bonds [16][17][18][19]. The b-N peak was proved to be an evidence of nitrogen doping in TiO 2 , and the very weak peak indicated the tiny amount of nitrogen doping.…”

Nanostructured Titanium Oxynitride Porous Thin Films as Efficient Visible‐Active Photocatalysts

“…[8] In particular, the application of nitrogen-doped titania as photocatalyst has received increasing attention over the last years because N-doping is found to be particularly effective in decreasing the bandgap of anatase. The incorporation of nitrogen into the titania network has been achieved trough different methods, such as reactive DC magnetron sputtering, [9] ionbeam-assisted deposition, [10] position, [11] laser ablation, [12] or ball milling, [13] using a variety of nitrogen sources, such as amines, urea, N 2 , or ammonia, [14][15][16][17] and different titanium sources, such as TiCl 4 , [18] TiCl 3 , [19] Ti(OH) 4 , [20] or Ti(SO 4 ) 2 . [21] However, it should be pointed out that the visible-light photocatalytic activity of the resulting materials is highly sensitive to the synthetic route used in their preparation.…”

Optical characterization of PLD grown nitrogen-doped TiO2 thin films

“…spray pyrolysis [5], sol-gel method [6], atmospheric pressure chemical vapor deposition [7], ion-assisted electron beam evaporation [8][9][10], atomic layer deposition [11], sputtering [12][13][14][15][16] and pulsed laser deposition (PLD) [17][18][19][20][21] coatings. The PLD process is particularly efficient in producing oxide thin films, while offering ease in controlling the physical, chemical and structural properties of the films.…”