How we can identify what is the coated side in indium tin oxide coated glass ?
Dear Dan Frenkel,
The Indium tin oxide coated glass is a transparent conductive oxide (TCO) coated substrates. The ITO coated glass having "excellent conductive" and "high transmittance" properties. The ITO glass is an "N-type semiconductor". It is a single side coating, where coated surface is "conductive", and another surface is "insulated".
The specified surface resistivity of the ITO coated glass sheet is in the range of "10 ohms/sq. to 100 ohms" per square.
The "resistivity of ITO glass" sample is measured by "multimeter" or "4 probe tester".
Using a multimeter, there are "two ways" to determine surface resistance:
01. The distance between two probes of multimeter should be 1 cm and placed the probe at an angle of 45 degrees to the surface so that you can get the "exact resistivity" of the substrate.
02. Cut ITO thin film in a square shape and coat the copper foil on upward and down side of the ITO film. Then place two probes on the copper foil and get reading for the "sheet resistance".
I hope I have answered your question.
With Best Wishes,
Samir G. Pandya
Use a multimeter to identify conductive side. ITO side is conductive, but glass side is insulating.
Multimeter is the route as explained above. With care holding the glass at an angle to purplish ITO layer can be distinguished but this is dependent on the ohms/square of the ITO.
Dear Dan Frenkel,
The Indium tin oxide coated glass is a transparent conductive oxide (TCO) coated substrates. The ITO coated glass having "excellent conductive" and "high transmittance" properties. The ITO glass is an "N-type semiconductor". It is a single side coating, where coated surface is "conductive", and another surface is "insulated".
The specified surface resistivity of the ITO coated glass sheet is in the range of "10 ohms/sq. to 100 ohms" per square.
The "resistivity of ITO glass" sample is measured by "multimeter" or "4 probe tester".
Using a multimeter, there are "two ways" to determine surface resistance:
01. The distance between two probes of multimeter should be 1 cm and placed the probe at an angle of 45 degrees to the surface so that you can get the "exact resistivity" of the substrate.
02. Cut ITO thin film in a square shape and coat the copper foil on upward and down side of the ITO film. Then place two probes on the copper foil and get reading for the "sheet resistance".
I hope I have answered your question.
With Best Wishes,
Samir G. Pandya
Is the front contact placed on the insulating side or the conducting side when forming a solar cell? Diagrams don't state which side.
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