PET CT100AAA Cell Tester

REFERENCE PIC
Cell Testing Fixture-2c
  • Light intensity feedback for stable output intensity
  • Computer based Controller
  • Manual/Automatic/External/ Remote shutter control


Catalog

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Product Introduction
Product Features
Technical Details
Accessories
Product Introduction

The Solar Cell I-V Curve Data Acquisition System characterizes the current-voltage (I-V) characteristics of photovoltaic devices with currents up to 20.0 amperes. It calculates the solar cell parameters, generates printable test reports and saves test data in text files. Curves are measured using classic four probes (Kelvin) technique. The system includes electronics, software, rack-mount computer, chuck and cell testing fixture with irradiance monitoring and optional temperature control. It interfaces with the customers’ Solar Simulator or a Solar Simulator can be supplied.

System Details

Test Fixture

The I-V Curve Data Acquisition includes a fixture for holding cells for testing. This fixture can accommodate cells from small to up to 100 mm x 100 mm. Adjustable cell stops, in the X & Y-axis, are provided to consistently locate the cells for testing. Two micro-manipulators are provided as shown in Figure 1. Each micro-manipulator has two spring loaded contacts to allow 4-wire measurement even for cells that have top contacts only. Two back-side voltage contacts are embedded in the platen (galvanically isolated from the platen) and make good electrical contact when the cell is held down by vacuum to the platen. All voltage and current probes are gold-plated. The cell is held down with vacuum during testing (built-in vacuum pump).

With optional Temperature Control, the cell holding plate can be either cooled or heated in the temperature range of 5-60°C using Peltier cells. Temperature of the plate is measured automatically with accuracy of <±0.5°C and is monitored during cell measurement.

Options

Temperature Control

Temperature control of the cell holding plate is available. The standard temperature control range is 5-60°C. Other temperature control ranges are available. Temperature control accuracy is < ±1°C.

Setup and Training

System setup is easy when using the instructions provided in the manual. If desired, PET will provide system setup and training at the customer’s facility. The IV Systems come with a choice of two different IV Measurement Software: Standard Software & Advance Software. The configuration of Console shown in the Figures 2 & 3 depends on the maximum current measurement capability.

Standard Software Features

  • MS Windows environment and user friendly software.
  • Computes solar cell parameters including: ISC, VOC, VMAX, IMAX, PMAX, FF, Efficiency, Rs, Rsh,
  • JSC, RS Density, RSH Density.
  • Measures Light & Dark IV Curves.
  • Scan data can be saved manually or automatically.
  • In automatic file save mode, the user defines a file name series. In this mode, the software creates a summary file of all the major measured parameters for all the cells tested in that series. This helps in analyzing the data for a series of cells tested for trends etc.
  • Provides printable test reports and test data in text files for easy exchange between programs
  • Solar Simulator shutter control (Solar Simulator sold separately)

Advance Software Features

  • Easy to use MS Windows environment and user friendly software.
  • Software handles measurement of both P type and N type cells without any cell connection changes.
  • Advanced noise filtering feature to enable measurement of good quality I-V curves even under fluctuating intensity conditions.
  • Light Intensity & Temperature monitoring and control, 5-60OC Standard. Other ranges optional.
  • Calculation of cell series resistance according to IEC 60891 standard and ASTM E948-09 Annex A1.
  • Procedures for fitting of measured I-V Curve to either equivalent diode models, i.e. SEM-Single Exponential, DEM-Double Exponential and VDEM-Variable Double Exponential with seventeen (17) weight functions.
  • Procedures for curve correction to Standard Test Conditions (STC) to IEC60891, Anderson’s and Blaessar’s or user defined conditions. User has the ability to perform automatic correction of measured I-V curve to STC (Standard Test Conditions), i.e. light intensity and temperature or other conditions specified by the user.
  • Computes solar cell parameters including ISC, VOC, FF, IMAX, VMAX, PMAX, Eff , Rs and Rsh and saves them automatically on hard disk drive. In addition cell’s temperature and irradiance level is measured and stored for future analysis.
  • Calculate Thermal Coefficients of ISC (α), VOC (β) & PM (γ).
  • Ability to see relationship between different parameters, such as temperature over time, irradiance over time etc.
  • Dark saturation current, RS and RSH determination
  • Provides printable test reports and test data in text files for easy exchange between programs
  • Software features include cell sorting in various categories. This cell sorting can be performed in production or in virtual binning modes specified by the user.
  • Solar Simulator shutter control (Solar Simulator sold separately)

Product Features

SS100AAA-TP TOUCH PANEL SYSTEM FEATURES

  • Light intensity feedback for stable output intensity
  • Computer based Controller
  • Manual / automatic shutter control
  • External lamp alignment with lamp on
  • Manual/Automatic/External/ Remote shutter control
  • Forced air cooling
  • Lamp life display
  • Selectable and adjustable constant intensity or constant lamp current
  • Safety Interlock override warning
  • Shutter Status Indicator
  • Lamp status indicator
  • Remote Trouble Shooting via Internet
  • Two (2) year factory warranty

SS100AAA-EM ELECTRO-MECHANICAL SYSTEM FEATURES

  • Light intensity feedback for stable output intensity
  • Electro-Mechanical Controller
  • Lamp life display
  • External lamp alignment with lamp on
  • Manual/Automatic/External/ Remote shutter control
  • Forced air cooling
  • Lamp Life Meter
  • Lamp Current Meter
  • Selectable and adjustable constant intensity or constant power mode
  • Safety Interlock override LED
  • Over Temperature Warning LED
  • Shutter Status Indicator
  • Lamp status indicator
  • Two (2) year factory warranty

Technical Details

FEATURE DESCRIPTION

SPECIFICATION

Type of lamp

Xenon Short Arc

Lamp Power

500 W

Max. Illuminated area

3.94” (100mm) x 3.94” (100mm)

Light Source

Steady State

Air Mass

AM1.5G Standard: AM0 or AM1 optional

Lamp lifetime

1,500 Hours

Adjustment Range of light intensity

100 mW/cm2 +/- 15%

Simulator Class

AAA

Spectral Match to all intervals

±25% or better

Spatial Non-uniformity of irradiance

≤ 2% or better

Short Term Temporal Instability (STI)

≤ 0.5% or better

Long Term Temporal Instability (LTI)

≤ 2% or better

Dimensions (Height x Width x Depth)

50.6” (1,285mm) x 14.5” (368mm) x 20.8” (529mm)

Weight

77Lbs. (35 Kg)

Optimum Working Distance

10.5” (267mm)

Phase/Voltage/Frequency

Single Phase/110-220AC Volts/50-60Hz

Max. Power Consumption (W)

1.0 KVA

Accessories