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INDIRECT TEMPERATURE MEASUREMENTS OF DIRECT BANDGAP (MULTIJUNCTION) SOLAR CELLS USING WAVELENGTH SHIFTS OF SUB-JUNCTION LUMINESCENCE EMISSION PEAKS
INDIRECT TEMPERATURE MEASUREMENTS OF DIRECT BANDGAP (MULTIJUNCTION) SOLAR CELLS USING WAVELENGTH SHIFTS OF SUB-JUNCTION LUMINESCENCE EMISSION PEAKS
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机译:直射带隙发射峰的波长偏移对直接带隙(多结)太阳能电池的间接温度测量
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摘要
Methods and structures may be used to measure operating temperatures of isolated cells and/or fully interconnected cells inside a Concentrator Photovoltaic (CPV) module. The method may use spectrometers to measure wavelength shifts of a sub-cell electro-luminescence and/or photo-luminescence emission spectrum. A sub-cells' intrinsic bandgap temperature-dependence relations may be used to indirectly compute the operating temperature of each subcell. A sub-cells' intrinsic bandgap temperature-dependence coefficients can be measured by performing quantum efficiency measurements and/or by recording the electro-luminescence and/or photo-luminescence emission profile of a solar cell at multiple temperatures.
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