Effect of tri-sodium citrate concentration on structural, optical and electrical properties of chemically deposited tin sulfide films

- SnS thin films grown by CBD in different concentration of tri-sodium citrate.
- Grain size increases, while surface roughness decreases, with concentration.
- Optical band gap decreases from 1.40 eV to 1.17 eV with increasing concentration.
- Electrical conductivity improves with increasing concentration.