Our family of LUMiKON products are the most advanced PL imaging systems for perovskite, silicon, and perovskite-silicon tandem solar cells currently available. Unlike conventional systems, the larger LUMiKON models can contactlessly determine the true implied open-circuit voltage, allowing researchers to rapidly and accurately optimise material compositions, passivation layers, and cell parameters. LUMiKON Mini
LUMiKON MINI is the smallest member of the LUMiKON family. It is intended to be used on a single junction cells with a size of up to 40mm x 40mm. It can be used inside a glove box to give the researcher immediate feedback via photoluminescence (PL) images on grown perovskites film qualities, but is equally at home on a bench top.
An upgraded version is available that calculates implied open circuit (iVoc) and absolute photoluminescence (PL) images via the SBF technique [1].
Specific emphasis is placed on (a) exceptional spectral filtering to allow even textured cells, (b) the ability to load/unload samples while wearing gloves and (c) fully automated image acquisition and saving of all data and images as soon the sample is loaded.



LUMiKON MAX is intended for cells of any size, but also for tandem- / multi-juctnion cells. It is captures full hyperspectral images of solar cells, allowing researchers to determine the absolute photoluminescence (PL) and/or electroluminescence EL emission spectrum and rapidly extract quantities such as material composition implied open circuit voltages (iVoc) and bandgap energy at every pixel.
It employs a novel interferometric hyperspectral camera that offers both shorter acquisition times and finer spectral resolution than conventional line-scanned systems. Systems can be ordered for VIS (400-1000nm), SWIR (900-1700nm), or full (400-1700nm) spectral ranges.


Please contact with us in case none of our LUMiKON models suit your needs. We like the challenge to built heavily customised instruments.

Some technical details on which we surpass conventional PL imagers:

  • Automatic correction for background signal, vignetting, distortion, and non-linearities
  • Fully-automated changing of filters, illumination and camera settings
  • Better than 10% non-uniformity of irradiance at the sample plane
  • Irradiance control from 0.01 to 1.2 Suns equivalent current, assuming unity EQE for the device under test
  • Light-tight and interlocked enclosure, meeting EU safety standards
  • Guided and semi-automated system calibration procedure for iVoc images

The following options are available:

  • Measurement of tandem- & triple-junction cells
  • Electroluminescence (EL) imaging with a custom contacting stage
  • Extension to measure sample sizes up to 300 x 300 mm2
  • Calibrated QTH black body to re-calibrate the system for the SBF technique
  • Custom light biasing and pre-soaking options
  • Implementation of custom algorithms and UI changes

[1] Arman Mahboubi Soufiani et al., ‘Implied Open-circuit Voltage Imaging via a Single Bandpass Filter Method—Its First Application in Perovskite Solar Cells’, 2022, Adv. Funct. Mater., DOI: 10.1002/adfm.202210592