Photovoltaics and Materials Testing

QE Testing. 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 Test)
    • External Quantum Efficiency (EQE Test)
    • Incident Photon to Charge Carrier Efficiency (IPCE)
    • IV testing / measurements
    • Reflectance and transmittance measurements
    • Photocurrent measurement : Resolution 10 picoampere to 10 microampere.(upgrade option)
    • Temperature Control (upgrade option)
    • DC measurement (upgrade option)

QE Testing 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 (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) Steady State Photo Conductivity (SSPC)
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 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)

6 Item(s)

Grid  List 

Set Descending Direction

6 Item(s)

Grid  List 

Set Descending Direction