Reversible conversion between AgCl and Ag in AgCl-doped RSiO3/2-TiO2 films prepared by a sol-gel technique

- The reversible redox behavior between AgCl and Ag in RSiO3/2-TiO2 film is studied.
- TiO2 component induces Cl to remain in the film after conversion of AgCl to Ag.
- The survival of Cl is essential for reconversion of Ag to AgCl.
- The film shows potential to be applied as rewritable holographic material.