NOVELTY - A thick film composition comprises exchange metal(s) from nickel, cobalt, iron, manganese and/or molybdenum; non-exchange metals from silver, copper, tin, bismuth, lead, antimony, arsenic, zinc, gold, cadmium and/or beryllium; and an organic medium where the exchange and non-exchange metals are in the form of particles having an average diameter of 0.2-10 mu m.    USE - A thick film composition for producing an electrical contact on a silicon nitride antireflective layer of a photovoltaic cell, preferably a silicon solar cell (claimed).    ADVANTAGE - The composition provides superior reduction in contact resistance, maintains good adhesion, and utilizes safe, cheap and readily available materials and processes.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) method of making photovoltaic device is made by providing a silicon substrate having a positive-type silicon base and a negative-type silicon layer; forming a silicon nitride layer on the negative-type silicon layer of the silicon substrate; placing an exchange metal in contact with the silicon nitride layer; placing a non-exchange metal in contact with the exchange metal; and firing the silicon substrate, silicon nitride layer, exchange metal and non-exchange metal to form a metal silicide contact to the negative-type silicon layer and a conductive metal electrode in contact with the metal silicide contact; and    (2) a photovoltaic device comprising a substrate comprising a negative-type silicon layer; a disposed contact adhered to negative-type silicon layer, and comprising metal silicide providing a low Schottky barrier height contact to the negative-type silicon layer having a contact resistance of less than 0.8 eV where the metal is nickel, cobalt, iron, manganese and/or molybdenum; and a conductive metal electrode adhered to and disposed on the metal silicide contact where the metal is silver, copper, tin, bismuth, lead, antimony, arsenic, zinc, germanium, gold, cadmium and/or beryllium.    DESCRIPTION OF DRAWING(S) - The drawing is a schematic side elevational view of a method of manufacturing a silicon solar cell.    Anti-reflective coating (30)    Aluminum back electrode (61)    Silver/aluminum back electrode (71)    Silicide first layer (90)    Metal second layer (92)