Physical and optical properties of chromium-doped glass-ceramics
The physical and optical properties of glass-ceramics containing transition metal ions are reported. Work centers on the mullite glass-ceramic family with chromium as the active center, although other hosts and dopants are considered. Crystallite structure, absorption spectra, and luminescent properties are examined for a wide range of precursor glass compositions. Detailed measurements of crystallite morphology and structure, absolute quantum efficiency, and scattering coefficients are made for two promising compositions as a function of heat treatment. For a specific heat treatment, one composition has a wavelength average quantum efficiency of 31% and a scattering coefficient at the wavelength of maximum luminescence emission of 0.04 cm/sup -1/. Results of experiments to determine details of the microscopic environment of Cr in mullite glass-ceramics are presented. A computational analysis of the performance of luminescent solar concentrators based on mullite glass-ceramics is described, as are experiments using large pieces of the material which verify the validity of the analysis.
- Research Organization:
- Corning Glass Works, NY (USA). Research and Development Div.; Boston Univ., MA (USA). Dept. of Chemistry
- DOE Contract Number:
- FG02-84ER45103
- OSTI ID:
- 6369669
- Report Number(s):
- DOE/ER/45103-T1; ON: DE87010584
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
140700 -- Solar Thermal Power Systems
36 MATERIALS SCIENCE
360603* -- Materials-- Properties
ABSORPTION SPECTRA
ALLOYS
CERAMICS
CHROMIUM ADDITIONS
CHROMIUM ALLOYS
DOPED MATERIALS
EQUIPMENT
GLASS
HEAT TREATMENTS
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
LUMINESCENCE
LUMINESCENT CONCENTRATORS
MATERIALS
MINERALS
MULLITE
OPTICAL PROPERTIES
OXIDE MINERALS
PERFORMANCE
PHYSICAL PROPERTIES
SOLAR CONCENTRATORS
SOLAR EQUIPMENT
SPECTRA
TRANSITION ELEMENT COMPOUNDS