Analytical Instruments
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-QEIV is integrated with 300W Xenon lamp with housing, optics, power supply and an easy to use software with capability to measure dark and lighted IV characteristics of solar cell and quantum efficiency measurement (300 nm - 1600 nm).
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 400 Hz 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. Detector characterization allows identification of the detector with the best performance for a particular application.
System consists of :
300W Xenon Lamp with integrated power supply
300F Quasar Monochromator (400 - 1100 nm) with order sorting filters
Selectable flip mirror assembly for quantum efficiency measurement / lighted I-V measurement. For lighted IV a collimated beam of 50mm diameter is used
Sample holding and x-y manual positioning unit arrangement helps to keep the sample horizontally
Electronics to measure dark and lighted I-V Characteristics: Current range - 0.1 μA to 0.75 A. Voltage range -5V to +5 V
Sample stage with manual 3 axis positioning feature
Chopper and lock in amplifier
Sample stage with XYZ translation
External Quantum Efficiency
Internal Quantum Efficiency
Photosensitivity
Reflectance
Established in 1993, Holmarc Opto-Mechatronics Ltd manufactures variety of scientific and engineering instruments for research, industry and education.
ISO 9001:2015 Made in INDIA
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