Tau Science PixELTM EL/PL System



PixEL™ is a luminescence imaging platform that performs both Photoluminescence and Electroluminescence. The architecture is modeled after the PL/EL system developed and used by Johnston et al at the National Renewable Energy Laboratory in Golden, Colorado. R&D labs that need to measure challenging, weakly luminescent samples will find that this system exhibits industry-leading sensitivity and signal to noise ratio.

For the ultimate in imaging performance <1100nm, a cooled, back-thinned, deep-depletion Silicon camera is used. For samples that exhibit strong luminescence (such as well-passivated Silicon cells), a more economical front-illuminated Silicon camera is offered. For deeper infrared applications [CIGS, CZTS, etc.], InGaAs imagers are also available.

Class 4 lasers may be selected for the most powerful PL illumination source, or lower cost LED’s may be used to reduce system cost when the imaging requirements are less stringent.

An XY stage and macro lens may be added if the user wishes to explore spatial details using a smaller (typically 20x20mm) field of view.

PixEL System Specifications

Base Specifications

  • Choice of Silicon or InGaAs cameras:
  • Camera Field of View: 100, 125, or 150mm [others on request]
  • Camera Macro Lens, optional: 20mm FOV [others on request]
  • XY stage, automated, optional: For use with Macro Imaging Lens
  • Sample DC Bias for Electroluminescence: ±10 A, ±20 V, 4-Quadrant [others on request]
  • Illumination Lasers: Jenoptik, 800nm, air cooled
  • Measurement Dwell Time: Configurable. 100ms-10s typical
  • AC Power Input: 220-240VAC, 1phase, 10A, 50-60Hz
  • User Safety: Automatic Door Interlocks for Laser, Stage
  • System Safety: EMO switch

Mechanical Configurations

  • Single Cell Imaging
  • Full module imaging (High Resolution, 9.3MP Camera is recommended)
  • Cell-by-cell imaging of entire module using XY gantry
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