Photo-response and quantum efficiency measurement: Newport QUANTX-300

Photo-response and quantum efficiency measurement: Newport QUANTX-300

Equipment: Newport QUANTX-300
Technique: Photo-response and Quantum Efficiency Measurement
Contact person (UNINOVA): Pedro Barquinha (pmcb@fct.unl.pt), Ana Rovisco (a.rovisco@fct.unl.pt)
Responsible: Manuel J. Mendes (mj.mendes@fct.unl.pt)

Description: QUANTX-300 is Newport’s fully-integrated system for Internal Quantum Efficiency (IQE) and External Quantum Efficiency (EQE) measurement of photovoltaic devices. This model also includes a 4-wire sense which broadens the capabilities to include a large range of sample sizes and efficiencies. 


  • Spot Size: 1.1 mm x 1.2 mm at focus
  • Working Distance: 85 mm
  • Wavelength Range: 320 – 1800 nm
  • Wavelength Accuracy: +/- 0.5 nm
  • Spectral Response Repeatability: < 0.5% of measured value
  • Programmable Voltage Bias: +/- 10V
  • Signal Acquisition: Chopper with virtual lock-in amplifier
  • Chopper Frequency: 4.0 Hz – 100.0 Hz
  • Input Voltage: 90 – 264 VAC
  • Power Consumption: 400 W
  • Power Supply Operating Mode: Constant current or constant power
  • Weight: 34 kg
  • Dimensions (m) (W x D x H): 0.85 x 0.37 x 0.49

A variety of accessory modules provide positive sample positioning, temperature control, and electrical probing capabilities, as well as a light bias system (based in laser diodes) to allow the measurement of tandem (double junction) solar cells. Allows for simultaneous measurement of EQE and the reflective losses to quantify IQE.

Link for additional information: