External Quantum Efficiency René van Swaaij PVMD Delft University of Technology
Learning objectives • Improved light calibration
Learning objectives • Improved light calibration • Bias illumination and bias voltage
Learning objectives • Improved light calibration • Bias illumination and bias voltage • Measurement procedure
EQE testing setup Reference diode Xenon lamp Mono- chromator Lock-in Amplifier Chopper wheel Computer
EQE testing setup Xenon lamp Solar Mono- cell chromator Reference diode Lock-in Amplifier Chopper wheel Computer
EQE testing setup Xenon lamp Solar Mono- cell chromator Reference diode Lock-in Amplifier Chopper wheel Computer
EQE testing setup Xenon lamp Solar Mono- cell chromator Reference diode Lock-in Amplifier Chopper wheel Computer
Multi-junction solar cells Top cell Bottom cell
Multi-junction solar cells Top cell Bottom cell
Multi-junction solar cells Probe light I =0 Top cell Bottom cell
Multi-junction solar cells Probe light Bias light I Top cell Bottom cell
Multi-junction solar cells Bias light Probe light I Top cell Bottom cell
Tandem solar cell: a-Si:H/µc-Si:H Top cell Bottom cell
Tandem solar cell: a-Si:H/µc-Si:H Top cell Bottom cell
EQE testing setup Bias light Xenon lamp Solar Mono- cell chromator Reference diode Lock-in Amplifier Chopper wheel Computer
EQE testing setup Bias light Xenon lamp Solar Mono- cell chromator Reference diode Lock-in Amplifier Chopper wheel Computer
Bias voltage JV curve Top cell Bias light Probe light I Top cell Bottom cell
Bias voltage JV curve Top cell Bias light Probe light I Top cell Bottom cell
Bias voltage JV curve Top cell Bias light Probe light I Top cell Bottom cell 0 V
Bias voltage JV curve
Bias voltage JV curve
Bias voltage JV curve
Bias voltage JV curve
Summary Minimizing light source instabilities by alternating • measurement
Summary Minimizing light source instabilities by alternating • measurement Multi-junction cells with bias illumination and bias voltage •
Summary Minimizing light source instabilities by alternating • measurement Multi-junction cells with bias illumination and bias voltage • Bias voltage used to determine electronic losses in the cell •
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