Quantum Efficiency Measurement System

Quantum Efficiency Measurement capabilities

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

Quantum Efficiency Measurement System for Photovoltaic (PV) Solar Cell Testing System
    • Spectral Response (SR): 250 - 2500 nm scanning range
    • Internal Quantum Efficiency (IQE Test)
    • External Quantum Efficiency (EQE Test)
    • Incident Photon to Charge Carrier Efficiency (IPCE)
    • IV testing / measurements
    • Reflectance and transmittance measurements
    • Constant Photocurrent method (CPM). (Upgrade option)
    • Dual-Beam Photocurrent (DBM).(Upgrade option)
    • Photothermal Deflection Spectroscopy (PDS).(Upgrade option)
    • Steady-State Photoconductivity (SSPC). (Upgrade option)
    • Temperature Control (upgrade option)
    • DC measurement (upgrade option)

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

Internal Quantum Efficiency is a calculation of the QE with consideration of the losses at the sample, i.e., the ratio of the number of carriers generated and collected by the solar cell to the number of photons that are truly converted by the solar cell.

Components of the Quantum Efficiency Measurement System

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 of solar cell testing and characterization:

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 (DBP) and Steady State Photo Conductivity (SSPC).

PV Cell Testing Model IV Curves Spectral Response (SR) External Quantum Efficiency (EQE/IPCE) Internal Quantum Efficiency Constant Photocurrent Method (CPM) Dual Beam Photocurrent (DBP) Photothermal Deflection Spectroscopy (PDS) Steady State Photo Conductivity (SSPC)
PTS 3 CPM X X X (Upgrade) X
PTS 3 DBM X X X (Upgrade) X
PTS 3 PTD 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

  • Sengupta, D., et al. "Zinc oxide photo-anode based chlorophyll sensitized solar cell."(2014) Read the article
  • 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 the article
  • 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 the article
  • 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 the article
  • 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 the article
  • 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 the article
  • 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 the article
  • 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 the article
  • González-Flores, Victoria Elena, et al. "Thin film solar cells of chemically deposited SnS of cubic and orthorhombic structures." Thin Solid Films 672 (2019): 62-65. Read the article
  • Nair, P. K., et al. "Functional prototype modules of antimony sulfide selenide thin film solar cells." Thin Solid Films 669 (2019): 410-418. Read the article

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-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

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