YANG Xiao-hong~. Study on optical and hydrogen sensing properties of nanocrystalline WO3 films[J]. 2006, (11): 12-14. DOI: 10.13873/j.1000-97872006.11.004.
films are prepared by DC magnetron sputtering technique
and then annealed in N
2
at different temperature.The structure and optical properties of the WO
3
films are studied by XRD and spectrophotometer.The experimental results show that the films exhibit better crystallinity with the annealing temperatures higher than 623 K
and crystalline WO
3
films show better optical property.The sensing properties of the WO
3
films to hydrogen gas are studied at different working temperatures.It is found that the sensitivity of pure WO
3
sensors is dependent on working temperature and the films response gets the greatest at 348 K.