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
- Resource Relation:
- Other Information: Portions of this document are illegible in microfiche products
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
14 SOLAR ENERGY
CERAMICS
OPTICAL PROPERTIES
PHYSICAL PROPERTIES
GLASS
LUMINESCENT CONCENTRATORS
PERFORMANCE
MULLITE
ABSORPTION SPECTRA
CHROMIUM ADDITIONS
DOPED MATERIALS
HEAT TREATMENTS
LUMINESCENCE
TRANSITION ELEMENT COMPOUNDS
ALLOYS
CHROMIUM ALLOYS
EQUIPMENT
INORGANIC ION EXCHANGERS
ION EXCHANGE MATERIALS
MATERIALS
MINERALS
OXIDE MINERALS
SOLAR CONCENTRATORS
SOLAR EQUIPMENT
SPECTRA
360603* - Materials- Properties
140700 - Solar Thermal Power Systems