Accession Number:

ADA390199

Title:

Thin Film CdZnTe Detector Arrays for Digital Mammography

Descriptive Note:

Final rept. 26 Sep 1996-25 Dec 2000

Corporate Author:

SPIRE CORP BEDFORD MA

Personal Author(s):

Report Date:

2001-01-01

Pagination or Media Count:

65.0

Abstract:

The objective of this program was to develop large-area, flat-panel detectors for digital mammography using CdTe or CdZnTe deposited by metalorganic chemical vapor deposition MOCVD directly on thin-film transistor TFT active matrix arrays for image readout. CdTe and CdZnTe have the potential to meet the requirements for digital mammography due to their high x-ray absorption, large bandgap and good carrier transport. After four years of intensive work, we were able to deposit the key detector film on crystalline silicon multiplexors and TFT arrays, maintaining the integrity of underlying electronics in both cases and proving the possibility of the proposed technology. Unfortunately, CdZnTe thin films were never realized with electrical properties equal to bulk grown CdZnTe, and functioning detectors could not be obtained.

Subject Categories:

  • Medicine and Medical Research
  • Radiobiology
  • Medical Facilities, Equipment and Supplies
  • Cybernetics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE