Fraunhofer Institute for Ceramic Technologies and Systems IKTS
Ceramic Phosphors
Topic
Fraunhofer IKTS develops ceramic phosphors and phosphor powders for various applications. These phosphors can be oxides, fluorides or nitrides. The characteristic absorption and emission properties can be adapted for a wide range of applications. Since the characteristic emission parameters of the phosphor, such as intensity and decay time, are influenced by temperature, ionizing radiation or atmosphere, ceramic phosphors can be used to detect changes in these influences. The temporal stability and temperature stability of ceramic phosphors also allow them to be used under harsh conditions.
Disks made of transparent Cr-doped YAG on the left and Ce-doped YAG on the right.
Transparent Ceramic Phosphors
For use as Q-switches and emission sources, e.g. scintillators.
LuAG:Ce ceramic platelets on a copper heat sink (left) and excited with a laser (449 nm).
High-Performance Ceramic Phosphors
For point-shaped white light sources and light conversion in different wavelengths, e.g. cyan converters.
YAG:Ce-Pulver
Ceramic Phosphor Powders for Marking
For use on metals and ceramics under harsh production conditions, e.g. in high-temperature processes.
Dependence of the decay time of the emission of an upconversion phosphor on the electron beam dose, with very little loss of information over 50 days.
Irradiation-sensitive ceramic phosphors
For storing dose information, e.g. for electron irradiation. The collected dose information is stable for many days.
Dependence of the decay time of the emission of an upconversion phosphor on the applied temperature without dependence on the exposure time.
Ceramic Phosphors for Temperature History
For the traceability of temperature feet in the range from 100 to 300 °C, e.g. for circuit boards.