The ShereScan

in cooperation with

ECN
     
ShereScan - instrument for mapping Sheet Resistance of emitter

To achieve high efficiency crystalline silicon solar cells, the uniformity and reproducibility of the emitter plays a major role. The knowledge of the emitter sheet resistance across the surface of a single wafer, and of the reproducibility from wafer to wafer is essential in optimizing the emitter diffusion process.
Sherescan instrument also offers other modes of measurement: P/N recognition, and metal conductivity.

     
Mains supply   230/115 V AC, 50-60 Hz
     
Power consumption   130 VA
     
Fuse (20x5 mm) For 230 V 1.6 A (slow blow)
  For 115 V 3.15 A (slow blow)
     
Measuring environment Temperature 15-30 °C
  Humidity level 80 %
  Vibration free ---

   
Interface   Serial, 9 pin SUB D
     
Measuring probe Tip material: Tungsten Carbide
Tip radius: 100 µm
Tip spacing: 635 µm
Pin pressure: 60 - 150 gr/pin (user adjustable)
Manufacturer: Jandel
 
     
Overall dimensions Width 809 mm
  Height 350 mm
  Depth 515 mm
     
Total weight   28 kg
     
Min. table size Width (Including monitor) 800 mm (1200 mm)
Depth 600 mm
     
Solar cell size Thickness 130-1000 µm
  Length (X-axis) 0-215 mm

Width (Y-axis) 0-215 mm
Cell shape Square, semi-square, rectangle, circle
     
Sample material
  • Multi crystalline and mono crystalline silicon
  • P-type and N-type
  • With and without emitter
  • Textured and non-textured
  • Specific resistivity 10 ohm.cm or less
 
     
Measurement positions
Free; 1 - 10.000 points; orthogonal
 
     
Measurement uncertainty
0.5% (electrical)
 
     
Compliance
Up to 55 V
 
     
Measurement range
10 Ohm/sq to 200 Ohm/sq
 
     
     

ShereScan operating software

The ShereScan instrument comes with operating software on a CD. No additional software or hardware is needed. To get an idea of the functionality and appearance of the software, you can take a look at the panels used in the software.

     
Required computer specifications
Processor Pentium 1 GHz minimum
Internal memory 256 MB or more
CD drive 50 MB minimum
Hard disk  
Keyboard  
Mouse  
Communication Serial port COM1 or COM2, baud rate 57600 bps. USB also possible with USB to serial converter.
Operating system Windows 98 or newer
Display resolution 1024 x 768 pixels minimum
     

SunLab BV is a daughter company of ECN Solar Energy research Centre of the Netherlands. SunLab was found in 1999 to commercialize special products of ECN Solar Energy. SunLab offers two instruments: CoreScan and ShereScan.

For more ShereScan product infomation contact:

Sunlab
P.O. Box 1
1755 ZG PETTEN
The Netherlands
www.sunlab.nl
e-mail : hoornstra@ecn.nl
Phone +31 22456 4407
Fax +31 22456 8214

 
Design and specifications subject to alteration without notice.

ShereScan

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