Queen's Applied Sustainability/Lab protocols/Quantum Efficiency

The solar cell spectral response system used is the QEX7 model from PV Measurements Inc. The unit is designed for beam-up and beam-down operation. A xenon arc lamp is employed with a dual-grating monochromator. Silicon and germanium photodiodes are used for calibration.

• Wavelength range: 300 nm to 1100 nm
• Wavelength interval: 5-20 nm, selectable
• Monochromatic beam spectral bandwidth: 4-5 nm FWHM
• Chopping frequency range: 4-200 Hz
• Voltage bias capability: -1.0 V to +1.0V
• Repeatability: Better than 0.2% for 400-1050nm, better than 0.7% outside
• Vacuum test fixture: 50mm x 50mm

• A nice summary (dead link)