Quantum Efficiency Measurement System


External Quantum Efficiency (EQE) is defined as the ratio of the number of carriers generated and collected by the solar cell to the number of photons of an incident beam without considering the losses due to reflection, transmission, or absorption from the sample

Quantum Efficiency Measurement System for Photovoltaic (PV) Solar Cell Testing System

Quantum Efficiency EQE, IPCE, IQE Measurement System

Sciencetech PV Testing System (PTS) is a cost-effective complete Turn Key system. It allows measurement for:

    • Spectral Response (SR): 250 - 2500 nm scanning range
    • Internal Quantum Efficiency (IQE)
    • External Quantum Efficiency (EQE)
    • Incident Photon to Charge Carrier Efficiency (IPCE)
    • IV measurements
    • Reflectance and transmittance measurements
    • Photocurrent measurement : Resolution 10 picoampere to 10 microampere.(upgrade option)
    • Temperature Control (upgrade option)
    • DC measurement (upgrade option)

QE Measurement System Research Grade Instruments

The system includes all required high quality Instruments to perform these measurements:

    • SCIENCETECH Tunable Light Source monochromator based (250-2500nm). Motorized triple grating turret system. Czerny-Turner design with adjustable band pass 0.2 to 24nm.
    • Bias Light Source. SCIENCETECH Solar Simulator AAA (ASTM E927). AM1.5G Filter
    • Keithley 2400 source meter.
    • Stanford Lock-in amplifier SR800
    • Optical Chopper system : frequencies between 4-200Hz
    • Integrating sphere for IQE
    • Power supply controlled by Programmable Logical Control (PLC).
    • Manually controlled shutter
    • A computer with a modern user friendly Software required to measure solar cell characteristics.
    • Light-tight measurement chamber

The PTS systems come with a light-tight sample chamber to perform measurements in optical isolation. This shielded and light-tight test area enclosure has a convenient removable cover allowing access from the top, front and sides.


Complying standars for Quantum Efficiency Measurements:

All Sciencetech systems incorporate adherence to industry standards. Sciencetech Pv Testing System equipment are designed and manufacturated according to:

    • ASTM E 1021-15: Standard Test Method for Spectral Responsivity Measurements of Photovoltaic Devices
    • ASTM E948-09: Standard Test Method for Electrical Performance of Photovoltaic Cells Using Reference Cells Under Simulated Sunlight
    • IEC 60904-8: Measurement of spectral responsivity of a photovoltaic (PV) device
    • IEC 60904-1: Measurement of photovoltaic current-voltage characteristics

Test cell included for verification (SCI-REF-NL). SCIENCETECH include a complete Quality Control Report including test results (Calibration, Spectral response, quantum efficiency and IV measurements)



Contact us for more info or request a quote



Quantum Efficiency Measurement System (PTS) Models


 

SCIENCETECH Inc. designs and manufactures five different variants of Quantum Efficiency Measurement System (PTS), as shown in the following table, for implementation of different experimental methods: External and Internal Quantum Efficiency (EQE and IQE), Constant Photocurrent Method (CPM), Dual Beam Photocurrent Method (DBM) and Steady State Photo Conductivity (SSPC).


PV Cell Testing Model IV Curves Spectral Response (SR) External Quantum Efficiency (EQE/IPCE) Internal Quantum Efficiency Constant Photo-current Method (CPM) Dual Beam Photo-current (DBM) Steady State Photo Conductivity (SSPC)
PTS 2 QE/ IPCE X X X
PTS 2 IQE/ IPCE X X X X
PTS 3 | CPM X X X (Upgrade) X
PTS 3 | DBM X X X (Upgrade) X
PTS 4 | SSP X X X (Upgrade) X

 

If you do not see the upgrade you are looking for, contact sales@Sciencetech-Inc.com and let us know what upgrade you would like and we will design it just for you!


Research Paper Publication referencing Sciencetech PTS QE


Find some of the research papers that use our Sciencetech PTS Quantun Efficiency System in the last 10 years

  • Turshatov, Andrey, et al. "Micellar carrier for triplet–triplet annihilation-assisted photon energy upconversion in a water environment." New Journal of Physics 13.8 (2011): 083035. Read More
  • Sengupta, D., et al. "Zinc oxide photo-anode based chlorophyll sensitized solar cell."(2014) Read More
  • Garcia‐Angelmo, A. R., et al. "Thin film solar cell of SnS absorber with cubic crystalline structure." physica status solidi (a) 212.10 (2015): 2332-2340. Read More
  • Das, P., et al. "Nano-crystalline thin and nano-particulate thick TiO2 layer: Cost effective sequential deposition and study on dye sensitized solar cell characteristics." Materials Research Bulletin 66 (2015): 32-38. Read More
  • Pratiyush, Anamika Singh, et al. "High Responsivity in Molecular Beam Epitaxy (MBE) grown\b {eta}-Ga2O3 Metal Semiconductor Metal (MSM) Solar Blind Deep-UV Photodetector." arXiv preprint arXiv:1702.04470 (2017). Read More
  • Sengupta, D., B. Mondal, and K. Mukherjee. "Genesis of flake-like morphology and dye-sensitized solar cell performance of Al-doped ZnO particles: a study." Journal of Nanoparticle Research 19.3 (2017): 100. Read More
  • Nittala, Pavani Vamsi Krishna, and Prosenjit Sen. "Scaling a fluorescent detection system by polymer-assisted 3-D integration of heterogeneous dies." Journal of Microelectromechanical Systems 27.5 (2018): 896-909. Read More
  • Solanke, Swanand, et al. "Multi-layer MoS2/GaN UV-Visible photodetector with observation of MoS2 band edge in spectral responsivity." arXiv preprint arXiv:1803.11012 (2018). Read More
  • Junda, Maxwell M., et al. "A Versatile Optical Model Applied to CdTe and CdSe 1–y Te y Alloys: Sensitivity to Film Composition and Relative Defect Density." 2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC)(A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC). IEEE, 2018. Read More

Sciencetech PTS - Quantum Efficiency Measurement Brochures


Download our brochures for Internal Quantum Efficiency Measurement (IQE) and External Quantum Efficiency Measurement (EQE)




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  1. PTS-2-IQE

    (PTS-2-IQE) Quantum Efficiency/IPCE System with EQE/IQE

    The PTS-2-IQE system allows an overall external quantum efficiency value measurement as well as internal quantum efficiency measurements using an integrating sphere. It includes all the spectral response equipment of the PTS-1, as well as a bias light and additional electronics and software to seamlessly allow user-friendly measurements of quantum efficiency.
    The PTS-2-IQE Includes the capability to perform the following measurements:
    -IV Testing
    -Spectral Response
    -External Quantum Efficiency/IPCE
    -Internal Quantum Efficiency/IPCE
    -Reflectance Learn More
    USD$47,500.00
  2. Photovoltaic Testing System Quantum Efficiency

    (PTS-2-QE) Quantum Efficiency/IPCE System

    The PTS-2-QE system allows an overall "external" quantum value measurement, which is considered the most important factor in cell testing. It includes all the Spectral Response equipment of the PTS-1, as well as a bias light and additional electronics and software to seamlessly allow user-friendly measurements of Quantum Efficiency. The PTS-2 can be upgraded to include Internal Quantum Efficiency measurements, or to include the necessary parts to allow Constant Photocurrent Method measurements (PTS-3).
    PTS-2-QE Includes:
    -IV Testing
    -Spectral Response
    -Quantum Efficiency/IPCE Learn More
    USD$42,500.00
  3. 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
  4. Photovoltaic Testing System Dual Beam Photocurrent

    (PTS-3-DBM) Dual Beam Photocurrent Method

    The PTS-3-DBM 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 photocurrent (DBM) method. The DBM system is based on maintaining constant photocurrent over the range of photon energy to get constant quasi-Fermi levels. Furthermore, the DBM 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-DBM Includes:
    -IV Testing
    -Spectral Response
    -Quantum Efficiency/IPCE
    -DBM Measurements Learn More
    USD$93,800.00
  5. PTS-3

    (PTS-3-PTD) Photothermal Deflection System

    The PTS-3-PTD has the same capabilities to measure IV, Spectral Response, and Quantum Efficiency as the PTS-1 and PTS-2 systems, but adds the powerful photothermal deflection spectroscopy (PDS) method allowing for the direct measurement of the sub-gap absorption of the sample by utilizing the mirage effect. Please speak to a Sciencetech Technical Specialist for further information.
    PTS-3-PTD Includes:
    -IV Testing
    -Spectral Response
    -Quantum Efficiency/IPCE
    -PDS Measurements Learn More
    USD$94,750.00
  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. UJig

    (UJP-100-LR-16) U-Jig package, 100x100mm target, 16bit DAQ

    Target size: 100x100mm
    DAQ: 16 bit
    Detector size : 20x20mm (apertured to 12.5x12.5mm)
    Detector Type: SCI-REF-LR
    Connectivity: 1 x USB2.0
    Power Requirements: 120VAC x 4A / 220VAC x 2A
    Dimensions: 200x200x125
    Learn More
    USD$6,000.00
  8. UJig

    (UJP-350-LR-16) U-Jig package, 350x350mm target, 16bit DAQ

    Target size: 350x350mm
    DAQ: 16 bit
    Detector size : 20x20mm
    Detector Type: SCI-REF-LR
    Connectivity: 1 x USB2.0
    Power Requirements: 120VAC x 4A / 220VAC x 2A
    Dimensions: 600x600x125
    Learn More
    USD$8,850.00
  9. UJig

    (UJP-500-LR-16) U-Jig package, 500x500mm target, 16bit DAQ

    Target size: 500x500mm
    DAQ: 16 bit
    Detector size : 20x20mm
    Detector Type: SCI-REF-LR
    Connectivity: 1 x USB2.0
    Power Requirements: 120VAC x 4A / 220VAC x 2A
    Dimensions: 800x800x125
    Learn More
    USD$10,125.00

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