Characteristics of ZnO-B2O3-SiO2-CaO glass frits prepared by spray pyrolysis as inorganic binder for Cu electrode

► ZnO-B2O3-SiO2-CaO glass frits are directly prepared by high temperature spray pyrolysis for use in Cu electrodes. ► A copper electrode formed from copper paste with glass frits has a dense structure when fired at 800 °C. ► The specific resistances of electrodes formed from copper paste with and without glass frits are 2.5 and 8.5 μΩ cm, respectively.