Koninklijke Philips Corporation N.v.

Vladimir Demidenko

Cornelis Reinder Ronda

Herfried Karl Wieczorek

Gunter Zeitler

Ludmila Bolyasnikova

Elena Gorokhova

Olga Ovsyannikova

Olga Khristich

The present invention relates to a fluorescent ceramic having the general formula GdOS doped with M, whereby M represents at least one element selected form the group Ce, Pr, Eu, Tb, Yb, Dy, Sm and/or Ho, whereby said fluorescent ceramic comprises a single phase in its volume; to a method for manufacturing a fluorescent ceramic using single-axis hot pressing; a detector for detecting ionizing radiation and to a use of said detector for detecting ionizing radiation. The method for manufacture of a fluorescent ceramic material using a single-axis hot pressing, comprises the steps: a) selecting a pigment powder of GdOS doped with M, and M represents at least one element selected from the group of Eu, Tb, Yb, Dy, Sm, Ho, Ce and/or Pr, whereby the grain size of said powder used for hot-pressing is of 1 &#x3bc;m, and said hot-pressing is carried out at&#x2014;a temperature of 1000&#xb0; C. to 1400&#xb0; C.; and/or&#x2014;a pressure of 100 Mpa to 300 MPa; air annealing at a temperature of 700&#xb0; C. to 1200&#xb0; for a time period of 0.5 hours to 30 hours.

Fluorescent ceramic and fabrication method thereof

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St. Petersburg, Russia

Vladimir Demidenko