The PTS platform afford users the freedom of purchasing a system which meets their immediate needs with the capability of upgrading to more complex systems at a later date. The prices indicated are for operational basic systems, options can be quoted in addition to satisfy customer's needs.For a detailed catalog please write to dynams@airtelmail.in.  We would be glad to send one.

Quantum Efficiency Measurement systems

Main Features: 

• I-V Tracer (Maximum I and V to be specified). 
• Spectral Response (SR) (between 300nm and 2,500 nm)

 

SKU: PTS-1-SR

This system includes either a 150W Xenon or 250W QTH light, a monochromator to tune the light source, and the necessary probes to attach to your sample. A source meter used as an active load permits operating the test cell at various load conditions, including short-circuit, compensating for a series resistor required to sense the current produced by the modulated monochromatic light.  This sensed current plus a reference signal at the frequency of the light modulation are both fed into the precision lock-in amplifier to allow measurement of the photocurrent generated by the modulated monochromatic light.

The PTS-1 features all the software required for I-V Curves and Spectral Response measurements. Main parameters of these measurements are displayed by the software, including the most important graphs typically required by researchers and the industry.  For the industry, our software development group offers to develop whatever is required to meet demand.
 
 The geometry of the light from the Monochromator is controlled to illuminate only a small section of the solar cell (typically 3mm diameter), ensuring that 100% of the monochromatic irradiance contributes to the output signal. NOTE: Spot size must be smaller than the 5mm diameter reference detector.
 
 The PTS-1 system includes a SCIRUNSR I-V-Test measurement system, precision lock-in amplifier and system software.  The software controls the Monochromator, source meter and lock-in amplifier to automatically measure the I-V characteristics and SR  versus  wavelength, plotting the result(s) on screen and outputting calculated results, including Voc, Isc, Pmax, Fill Factor, plus the raw measurements to a standard file format.
 
Additionally, the PTS-1 can be upgraded with optional light tight sample chamber, vertical adjustment components, sliding sample holder, and thermal control (either cooling or heating) for the sample holder. While these additions are not required for operation of the system, including them will ease your operation of the system.

Related Systems
Integrated Photovoltaic Testing System - Spectral Response
Integrated Photovoltaic Testing System – Quantum Efficiency
Integrated Photovoltaic Testing System – Constant Photocurrent Method
Integrated Photovoltaic Testing System – Steady State Photoconductivity

    Light Sources
 

Arc Lamps	Arc Lamps Housing	Deutrium Light Source (for UV Applications)
Power Supplies for Arc Lamps	QTH Lamp Housing	QTH Lamp Power Supplies
QTH Tungsten Halogen Lamps	Specialty Lamps	Spectral Lamps

 Monochromators
 

Monochromators and Spectrographs are optical devices that disperse light into its spectral wavelengths. These devices form the heart of any optical spectrometric system. More specifically, a monochromator disperses light and isolates one spectral wavelength to viewed or measured or otherwise used (hence the term monochromator, for monochromatic light). When a wider range of the dispersed wavelengths are used or measured at the same time the same instrument is called a spectrograph.

A scanning monochromator, with either a manual or computer controlled motorized turret, scans a selected spectral region one wavelength at a time so that all wavelengths are covered in the end. Scanning monochromators are often used as tunable wavelength light sources or fluorescence excitation sources where monochromatic light is required for illumination. They can also be mated to a single channel detector to measure the spectral content of the input light one wavelength at a time.

Solar Simulators

Sciencetech's solar simulators can be modified to suit your specific needs. The total irradiance on the target plane depends on the power of the arc lamp, the size of the illuminated target and the distance to the target. Sciencetech engineering department has an excellent working knowledge of the technical trade-offs related to these parameters and they can customize a solar simulator to fulfill almost every requirement. The patented design of the fully reflective solar simulators allows for ASTM Class A performance with higher intensity and efficiency than competing solar simulators. Class A standards can be achieved with the Collimated, Fresnel lens and Pulse solar simulators. Again these parameters depend on lamp power, target area and distance, please specify your requirements when submitting a request for quote.

Collimated Small Beam Solar Simulators

This inexpensive, small beam solar simulator is designed for applications where field size/power level can be sacrificed for cost-efficiency. With 1" optics uniformity is class A over a 1" field just past the output collimator, and collimation radius is better than 1 degree. At other locations uniformity is class A over about 1/2 the full field size. If this location is inconvenient (e.g. if filters are needed) a coupling lens can be added to project the uniform field to a more suitable location and selectable target size (but the beam is no longer collimated without introducing a 3rd lens).

Fully Reflective Solar Simulators

Sciencetech Solar Simulators produce higher intensity, very uniform illumination on a target area. In general solar simulators capture light from an arc lamp source (usually xenon) using a parabolic reflector. This arrangement results in a light pattern with a bright outer ring and a dark center. This non-uniformity is unacceptable in some applications for solar simulators. Many solar simulator manufacturers use diffusers to reduce the non-uniformity of their light pattern, but this solution results in a reduction in intensity, and a distortion of the spectrum on the target area. Sciencetech’s solution to these problems was to use a system of mirrors that “fold” the light onto the test plane so that less light is lost and there is no spectral distortion. The proprietary fully reflective design makes Sciencetech SS series solar simulators much more efficient.

Solar simulators can imitate sunlight conditions in a variety of environments such as the spectral distribution at sea level and in Space. The spectral distribution from the xenon arc lamp source can be altered and refined using Air Mass (AM) filters. Sciencetech’s AM filters are designed to be used individually for standard ratings but can be arranged in series to produce other spectral distributions as well. Many solar simulator systems require the use of filters in series to achieve the same performance as Sciencetech’s filters, for example the use of AM0 and AM1.0 filters in series to achieve AM1.0 spectral distribution, where Sciencetech’s AM1.0 filter can be used individually to achieve the same result. The use of a single filter reduces the losses associated with passing the light through several filters, and reduces the cost of filters for the system.

Sciencetech’s Fully Reflective Solar Simulators can be customized for your needs by manipulating the lamp power, the size of the target area and the distance to the target.

Measures all types of solar cells:

• mono/polycrystalline and amorphous silicon
• c-Si, mc-Si, nc-Si
• III/V compound cells
• Thin Film CdTe, CIS, CIGS, Si
• 3rd generation: organic polymer, dye-senstized
• Semiconductors, CdTe, CIS
• c-Si, mc-Si, nc-Si

Fresnel Lens Solar Simulators

Sciencetech has designed a Highly Collimated Solar Simulator for the purpose of photovoltaic testing. This new solar simulator, Model SSxxKW-Xe-Fr, with 1.0kW, 1.6kW and 2.4kW versions, can illuminate fields up to 300mm (12") diameter at a 1 SUN level. It uses a Fresnel lens to image the arc of a Xenon lamp to infinity and produce a highly collimated beam, plus a spatial filter for uniformity. The spectral distribution of the xenon light source is adjusted using specially designed Air Mass filters to closely simulate the sun's true spectral distribution for various conditions on Earth.

Flash Solar Simulators

Pulse solar simulator for large photovoltaic cells up to 1 x 1m. A larger (2 x 2m) version is available with its own current-voltage (I-V) measurement system option. Sciencetech has developed a number of fast I-V measurement system for the 2 m x 2 m and larger pulse solar simulator.

For a detailed catalog please write to dynams@airtelmail.in.  We would be glad to send one.

THz & FTIR Spectrometer

Far-Infrared and terahertz (THz) light is the spectral region between the end of the infrared region and microwave region. It is also known as sub-millimeter wave spectral region. In the last few years, there has been an explosion of interest in THz light applications as it can penetrate many materials like x-rays. THz light is now used in material science research, security, pharmaceutical compound analysis, biomedical imaging, superconducting material research, astronomy and particle physics research.

Sciencetech is a pioneer in THz spectroscopy having supplied its SPS-200 Far Infrared FTIR for over 10 years to the sub-millimeter wave research communities in astronomy and particle physics. Sciencetech has recently upgraded its SPS-200 into a truly commercial grade SPS-300 THz spectral analyzer and spectrometer thanks to the support of the European Space Agency which is using the SPS-300 for its Herschel-Plank Mission to analyze the origins of the universe.

Model SPS-300 Far-Infrared THz FTIR
The SPS-300 is Sciencetech’s latest modular polarizing Fourier Transform Spectrometer (FTS) designed specifically to operate in the far infrared or THz spectral region. While standard FTS and FTIRs are based on the Michelson configuration, the SPS-300 is based on the Martin-Puplett configuration which utilizes polarization division for a significantly increased signal to noise ratio to measure normal transmission, circular dichroism, and linear dichroism. The SPS-300 can be configured as a THz light source spectral analyzer by mating an external bolometer detector to its output port, or it can be configured into a THz materials spectrometer by mating an external light source to its input port and a sample chamber with detector to its output port.

Model SPS-200 Far-Infrared FTIR
The Model SPS-200 is Sciencetech’s older generation THz polarizing Fourier Transform Spectrometer (FTS). Although no longer available, there are many new upgrade accessories available for customers with existing systems. For example, the Rapid Scan Mode upgrade, which is also available for the SPS-300, a new highly stable mercury arc lamp, a new slower chopper system, etc.

THz Scanning Services
Sciencetech provides THz spectral analysis and scanning services on various materials in solid, liquid and gas form. Both transmission and reflectance measurements can be taken in the spectral range 20μm to 3.3mm.

For a detailed catalog please write to dynams@airtelmail.in. We would be glad to send one.

Accessories