![]() In typical usage, the current is set to 4.53 mA so that the resistivity is simply the voltage reading in mV. The typical emitter sheet resistivity of silicon solar cells lies in the range 30-100 Ω/□. Using the voltage and current readings from the probe: 1 ![]() Use of a four point probe to measure the sheet resistivity of a solar cell. The junction between the n and p -type materials behaves as an insulating layer and the cell must be kept in the dark. A current is passed through the outer probes and induces a voltage in the inner voltage probes. The sheet resistivity of the top emitter layer is very easy to measure experimentally using a "four point probe". The doping concentration can be calculated from the resistivity using the formulas discussed in the Appendices and the PV Lighthouse Resistivity Calculator The Measurement of Sheet Resistivity By passing a current through two outer probes and measuring the voltage through the inner probes allows the measurement of the substrate resistivity. ![]() A four point probe is a simple apparatus for measuring the resistivity of semiconductor samples. ![]()
0 Comments
Leave a Reply. |
Details
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |