The effect of temperature on the radiative performance of Ho-YAG thin film selective emitters

Conference · Sun Jan 01 04:00:00 EST 1995

OSTI ID:6590284

Lowe, R A; Chubb, D L; Good, B S

The authors present the emitter efficiency results for the thin film 25 percent Ho YAG (Yttrium Aluminum Garnet, Y3Al5O12) selective emitter from 1000 to 1700 K with a platinum substrate. Spectral emittance and emissive power measurements were made (1.2 less than lambda less than 3.2 microns) and used to calculate the radiative efficiency. The radiative efficiency and power density of rare earth doped selective emitters are strongly dependent on temperature and experimental results indicate an optimum temperature (1650 K for Ho YAG) for thermophotovoltaic (TPV) applications.

• Research Organization: National Aeronautics and Space Administration, Cleveland, OH (United States). Lewis Research Center
• OSTI ID: 6590284
• Report Number(s): N-95-18587; NASA-TM--106830; E--9380; NAS--1.15:106830; CONF-941203--; CNN: RTOP 233-01-0A
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
140500* -- Solar Energy Conversion
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
CHALCOGENIDES
DIRECT ENERGY CONVERTERS
EFFICIENCY
EMISSION
FERRITE GARNETS
FILMS
HOLMIUM COMPOUNDS
MINERALS
OXIDE MINERALS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
PHOTON EMISSION
RARE EARTH COMPOUNDS
SILICATE MINERALS
TEMPERATURE DEPENDENCE
THERMOPHOTOVOLTAIC CONVERTERS
THIN FILMS
TRANSITION ELEMENT COMPOUNDS
YTTRIUM COMPOUNDS