Spectral emissivity of ytterbium oxide-based materials for application as selective emitters in thermophotovoltaic devices
UNSPECIFIED. (1999) Spectral emissivity of ytterbium oxide-based materials for application as selective emitters in thermophotovoltaic devices. SOLAR ENERGY MATERIALS AND SOLAR CELLS, 59 (4). pp. 337-348. ISSN 0927-0248Full text not available from this repository.
The spectral emissivity of Yb3+ in a series of compounds has been investigated to study the effects of crystal structure type, chemical environment, ytterbium concentration, impurity concentration and temperature on the spectral radiant intensity of the selective emitter peak and emitted power from the material. A figure of merit has been defined which enables the compounds to be ranked for application in a practical thermophotovoltaic energy conversion device. It is shown that significant selective emission can be achieved from compounds in which the Yb3+ concentration is as low as 10 mol%. Apart from pure Yb2O3, the compounds Yb3Al5O12, YbNbO4 and Y0.9Yb0.1O1.5 are found to have emission spectra suitable for efficient matching to silicon photovoltaic cells. (C) 1999 Elsevier Science B.V. All rights reserved.
|Item Type:||Journal Article|
|Subjects:||T Technology > TJ Mechanical engineering and machinery
T Technology > TA Engineering (General). Civil engineering (General)
|Journal or Publication Title:||SOLAR ENERGY MATERIALS AND SOLAR CELLS|
|Publisher:||ELSEVIER SCIENCE BV|
|Official Date:||November 1999|
|Number of Pages:||12|
|Page Range:||pp. 337-348|
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