Patent ID: 8025817

Claim:
A method for manufacture of a fluorescent ceramic material using a single-axis hot-pressing, said method comprising the steps: a) selecting a pigment powder of Gd 2 O 2 S doped with M, and M represents at least one element selected from the group of Eu, Tb, Yb, Dy, Sm, Ho, Ce or Pr, whereby the grain size of said powder used for hot-pressing is of 1 μm to 20 μm, and said hot-pressing is carried out at a temperature of 1000° C. to 1400° C.; and a pressure of 100 MPa to 300 MPa; b) air annealing at a temperature of 700° C. to 1200° C. for a time period of 0.5 hours to 30 hours.