One of the derivatives of the 1‐2‐3 high‐Tcsuperconductors is known as the green phase (Y2BaCuO5). In a novel approach, the latter is proposed as the starting material to make oriented films deposited on MgO (001) by a simple painting method. Best results are obtained with a heat treatment up to 1040 °C and a slow cooling rate from 980 to 920 °C, giving films withTc,50%=83 K and &Dgr;Tc=6 K. Scanning electron microscopy assisted by localized x‐ray fluorescence permitted us to correlate theTc’s andJc’s with the general morphology of these films. Test pellets made with the 2:1:1 phase are also shown to be superconducting with a transition mid‐point atTc,50%=93 K and width of around 2 K.