The studies of YBa2Cu3O7-x thin film on the optical detector

• Main Authors: Hong, Meng Tsong, 洪夢聰
• Other Authors: Chen, Ying Chung
• Format: Others
• Language: zh-TW
• Published: 1995
• Online Access: http://ndltd.ncl.edu.tw/handle/79268333579685581966

碩士 === 國立中山大學 === 電機工程研究所 === 83 === In this study,YBCO HTSC thin film was grown on STO single crystal substrates by RF sputtering technique.The films were fabricated to be as optical detectors,and the opto-electrical properties were studied.The grown film exhibits a good structure ,a good surface morphology,and a narrow transition width.The opto-electrical properties of detectors were measured by means of varies radiations with wavelength from 633nm to 3500nm,and the ac voltage difference is measured by the lock-in amplifier. Opto-electrical properties of the device will be affected by the bias current.By tunning the bias current,we could vary the best operation temperature.The responsivity of the device is as high as 2350V/W;its value of NEP is small and has high value of detectivity.For various light sources, responsivity of the device is independent of wavelength.