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-QE is integrated with 50 W 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 400 nm to 1200 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.
Software Features
| Controls the monochromator and the 400 Hz Lock-in amplifier | ||
| Performs scans of user defined wavelength range | ||
| Operating system requirement | : | 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) |
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
CIN : L33125KL1993PLC006984
GST No : 32AAACH9492C1ZQ
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