Metallic Inks for Solar Cells: Cooperative Research and Development Final Report, CRADA Number CRD-10-370

Research output: NRELTechnical Report

Abstract

This document describes the statement of work for National Renewable Energy Laboratory (NREL) as a subcontractor for Applied Nanotech, Inc. (ANI) for the Phase II SBIR contract with the Department of Energy to build silicon solar cells using non-contact printed, nanoparticle-based metallic inks. The conductive inks are based upon ANI's proprietary method for nanoparticle dispersion. The primaryinks under development are aluminum for silicon solar cell back plane contacts and copper for top interdigitated contacts. The current direction of silicon solar cell technology is to use thinner silicon wafers. The reduction in wafer thickness reduces overall material usage and can increase efficiency. These thin silicon wafers are often very brittle and normal methods used for conductive feedline application, such as screen-printing, are detrimental. The Phase II program will be focused on materials development for metallic inks that can be applied to a silicon solar cell using non-contact methods. Uniform BSF (Back Surface Field) formation will be obtained by optimizing ink formulation and curing conditions to improve cell efficiency.
Original languageAmerican English
Number of pages4
DOIs
StatePublished - 2013

NREL Publication Number

  • NREL/TP-7A10-57796

Keywords

  • CRADAS
  • metallic inks
  • nanoparticle-based metallic inks
  • silicon solar cells

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