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Thin alloy films of palladium(Pd) and silver(Ag) are deposited onto glass substrates via the direct current(DC) magnetron technique.The hydrogen sensor probe consists of optical fiber bundle and Pd/Ag optical thin film.when the sensor is exposed to hydrogen,the refractive index of Pd/Ag optical thin layer will diminish and cause attenuation changes of the reflective light.It is observed that the thickness of Pd/Ag alloy layer can affect the hydrogen sensor signal.Under different substrate temperatures,several Pd/Ag samples are coated with different thicknesses of Pd/Ag alloy,and the results of a hydrogen sensor based on reflective light from the Pd/Ag alloy thin film are discussed.
Thin alloy films of palladium (Pd) and silver (Ag) are deposited on glass substrates via the direct current (DC) magnetron technique. Hydrogen sensor probe consists of optical fiber bundle and Pd / Ag optical thin film. to hydrogen, the refractive index of Pd / Ag optical thin layer will diminish and cause attenuation changes of the reflective light. It is observed that the thickness of Pd / Ag alloy layer can affect the hydrogen sensor signal. Under different substrate temperatures, several Pd / Ag samples are coated with different thicknesses of Pd / Ag alloy, and the results of a hydrogen sensor based on reflective light from the Pd / Ag alloy thin film are discussed.