Solar cells with less than 1% front‐surface metal shading loss have been made with a deep‐grooving hollow cathode dry etching process. Compared with standard laser‐grooved cells, a 4% relative increase in short‐circuit current density has been demonstrated. Open‐circuit voltages of over 640 mV (air mass 1.5, 25 °C), a fill factor of almost 79%, and the application of an antireflection coating have resulted in a one‐sun efficiency of 19.2%. This is one of the highest efficiencies yet reported for a cleaved 4 cm2silicon solar cell.