Fe doped hydroxyapatite thick films modified via swift heavy ion irradiation for CO and CO2 gas sensing application

Highlights
- We report improved gas sensing properties of Fe-HAp films via heavy ion irradiation.
- HAp films are tailored by addition of Fe ion as well as irradiation with variable ion fluence.
- SHI irradiated substrate sense the CO and CO2 gases at relatively lower temperature.
- Response and gas uptake capacity of sensors is improved for appropriate fluence 3 × 1011 ions/cm2.
- The enhanced sensor properties are attributed due to the surface modification by SHI.