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Front Side Metallization Issues of a Solar Cell with Ink-jet Printing

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Abstract:

The metallization of a multi-crystalline silicon solar cell has been challenged because the thickness reduction of a solar cell wafer decreases the breaking force of a solar cell wafer. Therefore, ink-jet printing has drawn attention of researchers in the art in place of conventional screen printing which requires the direct contact with a solar cell wafer to transfer silver paste. In this study, a preliminary study for the front side metallization of a solar cell wafer with ink-jet printing was conducted. Firstly, multicrystalline silicon solar cell wafers, the size of which is 156 mm by 156 mm, were coated with a 0.2 wt% fluorocarbon solution. After laser-patterning to selectively remove the SiNx layer and prepare for the surface energy patterned finger electrode regions, silver nanoparticulate ink was delivered with a piezo Drop-On-Demand ink-jet print head and baked at the peak temperature of 830 °C after drying at 100 °C. The measured cell efficiency of an ink-jet metallized solar cell was about 12.1% and the cause of the low cell efficiency is addressed here.

Document Type: Research Article

Publication date: January 1, 2012

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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