万博平台网页版登录/Analytical Instruments/Quantum Efficiency and Spectral Response Measurement System
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Quantum Efficiency & Spectral

Response Measurement System
Model: HO-SC-QE


The spectral responsivity or quantum efficiency (QE) is essential for understanding current generation, recombination, and diffusion mechanisms in photovoltaic devices. PV cell and module calibrations often require a spectral correction factor that uses the QE. The quantum efficiency in units of electron - hole pairs collected per incident photon is computed from the measured spectral response in units of amperes per watt as a function of wavelength. Model HO-SC-QE is integrated with 50W Tungsten Halogen lamp with housing, optics, power supply and an easy to use software with capability to measure the spectral response and quantum efficiency of solar cell at the wavelengths from 400nm to 1200nm.

System includes a sample stage, capable of accommodating samples up to 50 mm diameter and probes to contact the sample. Light is normally incident on the sample. Fixed frequency chopper and lock in amplifier are used for modulating the light at a frequency of 400Hz for measuring spectral response. Wavelength resolution of monochromator is 0.1nm. Illumination area can be adjusted using lens assembly system.

It can also be used for characterization / measurement of the imaging systems (cameras) and other detectors in terms of linearity range, spatial non-uniformity of response (the variation of responsivity across the active area of a detector) etc.

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Light source : 50W Halogen lamp
Wavelength range : 400 nm to 1200 nm
Chopper frequency : 400 Hz
Bias light : 3W White LED
Sample size : Up to 50 mm
Sample holder with XY motion
Optical Design : Czerny-Turner
Main Mirrors : Parabolic type with Enhanced Aluminum Coating
Focal Length : 300 mm
Dispersion Element : Holographic Grating
Grating Density : 1200 l/mm
Filter unit : Higher order cut off filter wheel

Controls the monochromator and the 400Hz Lock-in amplifier
Performs scans of user defined wavelength range
操作系统要求 : Windows XP / 7 / 8 / 8.1 / 10
Plots spectral response of the sample at a specified wavelength range
Export the results to spreadsheet file
PC Interface : RS232 or USB (Using a USB to serial converter)
Features

Measurement of the spectral response and quantum efficiency of a solar cell from 400 nm to 1200nm

50W Halogen lamp with integrated power supply

300 F Quasar Monochromator (400 - 1200 nm) with order sorting filters

Sample holder with manual X-Y positioning arrangement to align the position of the light beam on the sample

Sample size up to 50 mm

Built-in optical chopper and lock in amplifier

LED bias light

External Quantum Efficiency

Internal Quantum Efficiency

Photosensitivity

Reflectance



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