P2.8.8 Research on characteristics of hydrogen gas sensor based on palladium and yttrium alloy ultrathin film

Yi Liu, You-Ping Chen, Han Song & Gang Zhang
Several research groups have reported optical fiber hydrogen sensors with thinner film possess faster response but smaller signal value. In order to acquire a satisfying performance, a novel reflection type optical fiber hydrogen gas sensor with 5nm palladium and yttrium thin film was fabricated. Experimental studies indicated that the sensors was sensitive to the hydrogen, the variation of output of sensors was linearly increased with increasing natural logarithms of hydrogen concentration (ln(H2)), and the shortest...