AIP conference proceedings · 2007 · 23 citations · 1 references
EngineeringMaterials EngineeringMaterials ScienceEnergy MaterialsHeat TransferSemiconductor MaterialsPhotovoltaic DevicesSolar Cell MaterialsSolar CellsSolar Energy SystemsSolar Photovoltaic SystemsSolar RadiationCell EfficiencyElectrical CeramicsLight DistributionPhotovoltaic Energy SystemsPhotovoltaic Module DesignPhotovoltaic SystemsSolar Cell CharacterizationSolar Cell Fabrication
A solar TPV generator development and characterization are presented. A double stage sunlight concentrator ensures 4600x concentration ratio. TPV modules based on tungsten emitters and GaSb cells were designed, fabricated and tested at indoor and outdoor conditions. The performance of tungsten emitter under concentrated solar radiation was analyzed. Emitter temperatures in the range of 1400–2000 K were measured, depending on the emitter size. The light distribution in the module has been characterized, 1×1 cm GaSb TPV cells were fabricated with the use of the Zn‐diffusion and LPE technologies. The cell efficiency of 19% under illumination by a tungsten emitter (27% under spectra cut‐off at λ > 1820 nm) heated up to 1900–2000 K had been derived from experimentally measured PV parameters. The series connection of PV cells was ensured by the use of BeO ceramics. The possibilities of system performance improvement are discussed.
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