Contact resistance is an important aspect to be considered in the optimization of solar cell electrode. The contact resistance is not only related to the contact pattern, but also to the diffusion process and PN Junction formation process. The measurement of contact resistivity can reflect the problems existing in the process of diffusion, electrode formation and PN Junction formation.

There are two test functions can be switched: 1. Contact resistivity test; 2.Finger line resistance.

ME-PT3000 is a high speed confocal scanning microscope for accurate and reliable 3 dimensional (3D) measurements. Real-time confocal microscopic images can be realized by fast optical scanning module and signal processing algorithm.

Optical instrument specially used for the quality inspection of grid line and suede surface of photovoltaic cell in photovoltaic industry. Quantitatively detect the height and width of the grid lines on the photovoltaic cells and the number of pyramids on the textured surface to feedback the process quality of photovoltaic cell cleaning and texturing and screen printing.