- Pure TiO2 has ban-gap (3.22eV)
- TiO2-Ti3C2 has ban-gap (2.22eV - 2.89eV)
What is the main mechanism of MXene (Ti3C2) that reduce to ban-gap to become lower?
an extra energy level will be generated in the thin film, and having an extra phase causing a shift toward lower bandgap energies.
please check these references :
https://doi.org/10.1088/0268-1242/20/5/012
Article Effect of post-annealing on the properties of copper oxide t...
hopefully, this helps you
The band-gap of TiO2 depends upon various factors including synthesis parameters, temperature, doping etc.
Doping is an efficient technique to reduce the band gap of TiO2.
As change in particle size leads to changes in interatomic spacing. So, the amplitude of atomic vibrations increases by doping, leading to larger interatomic spacing which increases the particle size. The previous Literature reveals that increase in particle size results in reduction band gap. This may b a cause of band gap reduction in your case.
- Badges
- Science topic