PV Measurements, Inc.
Instrumentation for photovoltaics industry and research

Spectral Response / Quantum Efficiency / IPCE Measurement Systems

These systems can measure a wide variety of photovoltaic devices, including p-n junction and dye-nanocrystalline solar cells (DSSCs).

All systems include a light source, monochromator, filters, and reflective optics provide monochromatic light to a photovoltaic device while a broadband bias light illuminates the test device to simulate end-use conditions. A computer interfaces with the monochromator, signal conditioning equipment, and digital signal processing equipment; interprets signals; maintains calibration information; saves test data; and produces test reports. Different models include different features and can be configured with different options.

Basic System Features

• Dual grating monochromator with computer control

• Filter wheel with order-sorting and stray light attenuation filters

• Calibrated reference photodiode

• Line filter for wavelength calibration verification

• White bias light source

• Simultaneous measurement of device response and light intensity

• Easy-to-use graphical user interface

• Computer, LCD monitor, keyboard, and color printer

• 300-1100 nm (Model QEX7) or 360-1100 nm (Model QEW7) wavelength range

• Monochromatic light spectral bandwidth approximately 5 nm (user changeable)

• Selectable wavelength interval (default 5 nm)

• Calculates Jsc estimate using reference spectrum

• Instruction manual

Options

• Setup and training at customer site

• Reflectance and IQE measurement capability (Model QEX7)

• 1100-1400 nm wavelength range extension

• Test fixture and contacting mechanism designed to meet your requirements

• Temperature control for the test fixture

• Multi-junction device measurement capability

Other options are available; please contact us to discuss your requirements. Please note that customized systems are designed to meet your needs. Individual systems vary in appearance, components, and features.