Photovoltaics and Materials Testing

Photovoltaic devices are so called since they rely upon the photovoltaic effect that was first discovered by a French experimental physicist, Edmund Becquerel, in 1839 to generate a current/voltage upon exposure to light. However, the history of practical PV devices did not begin until 1954 when Bell Laboratory first demonstrated a silicon solar cell with a conversion efficiency of 6%.

 Sciencetech Inc. has been designing and manufacturing modular optical spectroscopy instruments and components for over 30 years. They are widely used all over the world in research laboratories, universities and companies. Sciencetech instruments are designed with the researchers in mind and feature fully adjustable controls for research flexibility. All Sciencetech systems incorporate modular design and adherence to industry standards for easy integration with other supplier’s instruments and components.

 Sciencetech Inc. designs and fabricates four different variants of Photovoltaic Testing System (PTS), as shown in the following table, for implementation of different experimental methods.

 

 

 

 

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  1. ptsseries

    IV Test / PTS Temperature Measurement Upgrade

    This is a modification to the Keithley unit used for IV Test measurements to allow the system to measure temperature at the same time as intensity. These Keithley units are used in all of Sciencetech's line of Photovoltaic Testing Systems, as well as our stand-alone IV Test units.
    Please note that this system requires a calibrated reference cell to operate, and will not function with flash illumination systems. Learn More
    USD$950.00
  2. IVTester

    (SSIVT-60F) Current-Voltage Measurement System (IV Tester) - 60W Version for Flash Solar Simulators

    The SSIVT is an electrical current-voltage measurement system used to characterize photovoltaic cell performance. This current-voltage tester works by sampling various currents versus specific voltage combinations of the photovoltaic cell with a variable impedance load.

    This IV measurement system has a separate terminal interface for voltage and current measurements, and the number of sample points can be selected between 10 and 100. Each IV curve dataset is saved as a separate ASCII text file. This system includes Sciencetech’s SciRunIV software for Windows-based control. The system interfaces to PC via a RS232 port and requires a real port; RS232 to USB converters are not sufficient.

    Please note that this system includes a SSIVT-REF detector. The reference detector is an integral part of this product and is used to synchronize the peak of each flash pulse with IV measurements of the device under test.

    Compatible Solar Simulator Type: Flash
    Maximum Electrical Power Reading: 60W
    Voltage Range: 60V
    Current Range: 3A
    Learn More
    USD$16,934.00
  3. IVTester

    (SSIVT-60C) Current-Voltage Measurement System (IV Tester) - 60W Version for Continuous Solar Simulators

    The SSIVT is an electrical current-voltage measurement system used to characterize photovoltaic cell performance. This current-voltage tester works by sampling various currents versus specific voltage combinations of the photovoltaic cell with a variable impedance load.

    This IV measurement system has a separate terminal interface for voltage and current measurements, and the number of sample points can be selected between 10 and 100. Each IV curve dataset is saved as a separate ASCII text file. This system includes Sciencetech’s SciRunIV software for Windows-based control. The system interfaces to PC via a RS232 port and requires a real port; USB to RS232 converters are not sufficient.

    Compatible Solar Simulator Type: Continuous
    Maximum Electrical Power Reading: 60W
    Voltage Range: 60V
    Current Range: 3A
    Learn More
    USD$15,007.00
  4. IVTester

    (SSIVT-20F) Current-Voltage Measurement System (IV Tester) - 20W Version for Flash Solar Simulators

    The SSIVT is an electrical current-voltage measurement system used to characterize photovoltaic cell performance. This current-voltage tester works by sampling various currents versus specific voltage combinations of the photovoltaic cell with a variable impedance load.

    This IV measurement system has a separate terminal interface for voltage and current measurements, and the number of sample points can be selected between 10 and 100. Each IV curve dataset is saved as a separate ASCII text file. This system includes Sciencetech’s SciRunIV software for Windows-based control. The system interfaces to PC via a RS232 port and requires a real port; USB to RS232 converters are not sufficient.

    Please note that this system includes a SSIVT-REF detector. The reference detector is an integral part of this product and is used to synchronize the peak of each flash pulse with IV measurements of the device under test.

    Compatible Solar Simulator Type: Flash
    Maximum Electrical Power Reading: 20W
    Voltage Range: 20V
    Current Range: 1A
    Learn More
    USD$13,470.00
  5. IVTester

    (SSIVT-20C) Current-Voltage Measurement System (IV Tester) - 20W Version for Continuous Solar Simulators

    The SSIVT is an electrical current-voltage measurement system used to characterize photovoltaic cell performance. This current-voltage tester works by sampling various currents versus specific voltage combinations of the photovoltaic cell with a variable impedance load.

    This IV measurement system has a separate terminal interface for voltage and current measurements, and the number of sample points can be selected between 10 and 100. Each IV curve dataset is saved as a separate ASCII text file. This system includes Sciencetech’s SciRunIV software for Windows-based control. The system interfaces to PC via a RS232 port and requires a real port; USB to RS232 converters are not sufficient.

    Compatible Solar Simulator Type: Continuous
    Maximum Electrical Power Reading: 20W
    Voltage Range: 200V
    Current Range: 1A
    Learn More
    USD$11,543.00
  6. PTS-4 Steady State Photoconductivity

    (PTS-4-SSP) Steady State Photoconductivity System

    The PTS-4-SSP allows the user the same ability to measure IV, Spectral Response, and Quantum Efficiency, and includes CPM as the PTS-1, 2, and 3-CPM systems, but adds the powerful Steady State Photoconductivity (SSP) method to the extensive tools already available. The steady state photoconductivity measurements give information about the nature of defects, mobility-lifetime products, and the transport and recombination kinetics of photogenerated carriers. Please speak to a Sciencetech Technical Specialist for further information.
    PTS-4-SSP Includes:
    -IV Testing
    -Spectral Response
    -Quantum Efficiency/IPCE
    -CPM Measurements
    -SSP Measurements Learn More
    USD$124,500.00
  7. Photovoltaic Testing System Dual Beam Photocurrent

    (PTS-3-DBM) Dual Beam Photocurrent Method

    The PTS-3-DBPM has the same ability to measure IV, Spectral Response, and Quantum Efficiency as the PTS-1 and PTS-2 systems, but adds the powerful technique of the Dual Beam Photoconductivity Method. The DBPM system is based on maintaining constant photocurrent over the range of photon energy to get constant quasi-Fermi levels. Furthermore, the DBPM system has the additional capability to vary the bias light source intensity. This changes the electron-hole and quasi-Fermi levels to yield additional information about defect states. Please speak to a Sciencetech Technical Specialist for further information.
    PTS-3-DBPM Includes:
    -IV Testing
    -Spectral Response
    -Quantum Efficiency/IPCE
    -DBPM Measurements Learn More
    USD$93,800.00
  8. Photovoltaic Testing System Constant Photocurrent Method

    (PTS-3-CPM) Constant Photocurrent Method System

    The PTS-3-CPM allows users the same ability to measure IV, Spectral Response, and Quantum Efficiency as the PTS-1 and PTS-2, but adds the powerful Constant Photocurrent Method (CPM). The CPM system illuminates the sample solar sell with a bias solar light source while a separate light source is modulated to cover a specified spectrum. The bias source ensures that the signal is not dominated by the non-linear response at low-level illumination, but rather gives a baseline response dependent on the wavelength of the modulated source. This allows for a highly precise measurement of defect density. Please speak with a Sciencetech Technical Specialist for more information.
    PTS-3-CPM Includes:
    -IV Testing
    -Spectral Response
    -Quantum Efficiency/IPCE
    -CPM Measurements Learn More
    USD$92,500.00
  9. Photovoltaic Testing System - Spectral Response

    (PTS-1-SR) Spectral Response System

    The PTS-1-SR system includes a lamp and monochromator for a tunable light source, which is coupled to a high sensitivity source meter with measurement software. This user-friendly system is the most powerful Spectral Response system currently on the market, but its true power is the ease of upgrading from the base PTS-1 to the more powerful PTS-2-QE (Quantum Efficiency) or PTS-3-CPM (Constant Photocurrent Method). Designed for researchers who have limited budgets but want to start work immediately, this allows the ability to do baseline studies until additional funding for the full QE or CPM system becomes available.
    Please speak to a Sciencetech Technical Specialist for further information.
    PTS-1 Includes:
    -IV Testing
    -Spectral Response Learn More
    USD$38,500.00

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