Accession Number:

ADA333381

Title:

Developing High-Efficiency Zn2SiO4:Mn Thin-Film Phosphors for Flat-Panel Cathodoluminescent Displays

Descriptive Note:

Summary rept. Jan-May 97

Corporate Author:

ARMY RESEARCH LAB ADELPHI MD

Report Date:

1997-12-01

Pagination or Media Count:

17.0

Abstract:

Zn2SiO4Mn thin films were produced and studied for their potential application as thin film phosphors for high-resolution flat-panel cathodoluminescent displays. Crystallized films with improved electrical conductivity were obtained after conventional and rapid thermal annealings in an N2 environment at 850 to 1100 deg C for 0.25 to 60 min. A maximum cathodoluminescent efficiency of 1.3 lmW was achieved under dc excitation at 1500 V. The luminescent emission from these thin films peaked around 525 nm. The decay time of these films was controlled in the range of 2 to 10 ms by variation of the deposition and annealing parameters. Because their fast response time overcomes the long decay limitation of the Zn2SiO4Mn powder phosphor, these thin films will be suitable for practical display applications.

Subject Categories:

  • Electrooptical and Optoelectronic Devices
  • Solid State Physics

Distribution Statement:

APPROVED FOR PUBLIC RELEASE