PREPARATION OF EPITAXIAL AND GRAIN-BOUNDARY-FREE HIGH T(C) SUPERCONDUCTING THIN FILMS FOR FAST AND SENSITIVE INFRARED DETECTOR

THE OBJECTIVE OF THIS WORK IS TO PREPARE EPITAXIAL AND GRAINBOUNDARY-FREE HIGH TC Y0BA-CU OXIDE SUPERCONDUCTING THIN FILMS FOR THE APPLICATIONS OF INFRARED DETECTIONS. OPTICAL RESPONSES HAVE BEEN MEASURED ON THE GRANULAR HIGH TC SUPERCONDUCTING THIN FILMS. THE FASTEST RESPONSE TIME AND THE HIGHEST DETECTIVITY WERE 20 NS AND 10(8) CM-HZ(1/2)/W, WHICH ARE FAR BELOW THE REQUIRED NUMBERS FOR ANY PRACTICAL APPLICATIONS. WE ANTICIPATE THE FABRICATION OF SUPERCONDUCTING THIN FILMS WITHOUT ANY GRAIN BOUNDARIES BUT WITH A LARGE NUMBER OF LOCAL DEFECTS. THE ACHIEVEMENT OF THESE GOALS WILL DEMONSTRATE THAT THESE FILMS CAN USED FOR FAST AND SENSITIVE DETECTIONS FROM NEAR INFRARED TO FAR INFRARED WAVELENGTHS. THIS WILL LEAD TO THE BIRTH OF A SUPER HIGH SPEED AND SUPER HIGH SENSITIVITY SEMICONDUCTING THIN FILM INFRARED DETECTOR WHICH WILL FIND WIDE APPLICATIONS IN THE AREAS OF MILITARY, SCIENTIFIC AND MEDICAL RESEARCH AS WELL AS INDUSTRY.