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LumiSolarCell EL PL

Deep Cooling CCD Imaging Camera

Overview of LumiSolarCell EL PL

The characterisation methods of the LumiSolarCell EL PL encompass both electroluminescence (EL) and photoluminescence (PL) techniques. For EL, the methods include EL and reverse-biased EL imaging, which help assess the performance and integrity of the solar cells. Additionally, the measurement of the local cell voltage, mapping of the local current density, and optional evaluation of series resistance provide detailed insights into the electrical characteristics and efficiency of the cells. In terms of PL, the methods involve PL imaging to visualize luminescent properties, biased PL to gain insights under different electrical conditions, and the mapping of minority carrier lifetime to measure the duration charge carriers exist before recombining. Together, these techniques offer a comprehensive analysis of the solar cells’ performance and material properties.

Inspection Capabilities

  • Micro-cracks identification
  • Shunt detection
  • Finger defects
  • Paste properties
  • Local lifetime
  • Dead cells
  • Broken cells
  • Inhomogeneities and impurities

System Advantages

  • Non-contacting characterization through PL measurement
  • Unique, award-winning HighPower LED light source
  • Combined EL/PL tool in one set-up
  • Outstanding image quality
  • No limiting safety requirements in contrast to laser-based PL systems
  • Industry proven all over the globe
  • Cost over performance
  • Scalable set-up

Tested on various solar cell types

  • Monocrystalline silicon (mono-Si)
  • Polycrystalline silicon (poly-Si)
  • Amorphous silicon (a-Si)
  • Copper indium sulfide (CIS)
  • Copper indium gallium selenide (CIGS)
  • Cadmium telluride (CdTe)
  • Heterojunction with intrinsic thin layer (HIT)

Specifications

EL excitation source

Programmable power supply, 0-80V, 0-9.5A

Functionalities

PL, biased PL

PL Light source

HighPower LED array | Adjustable intensity, max. 1500W/m² (>1 Sun) | Homogeneity >90%

EL Contacting adapter

Adapter for 5 and 6 inch cells (156mm x 156mm) included | Flexible design for 2-5 bus bars | Vacuum contact adapters for IBC cells available as an option

Functionalities

EL, reverse biased EL , PL, biased PL

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    greateyes GmbH

    Ludwig-Boltzmann-Straße 3
    12489 Berlin

    Contact Us

    Ludwig-Boltzmann-Straße 3
    12489 Berlin

    Phone:
    +49 (0)30 221 844 700
    Email:
    info@greateyes.de