Optical Transmittance of PdHx Thin Film

PdHx 박막의 광투과도

  • Cho, Young sin (Department of Science Education, Kangwon National University)
  • 조영신 (강원대학교 과학교육학부)
  • Published : 2001.09.15


The change of optical transmittance of $PdH_x$ thin film due to hydrogen concentration change was measured at room temperature. Pd film($312{\AA}$ thick) was made by thermal evaporation on glass substrate. Hydrogen absorption and desorption cycling effect on optical transmittance was measured 4 times in the pressure range between 0 and 640 torr. Ratio of optical transmittance to the change of ln pressure(torr) increases with increasing number of hydrogen A-D cyclings in the ${\beta}$ phase.