Blakers, A. W.Green, M. A.Jiqun, S.Keller, E. M.Wenham, S. R.Godfrey, R. B.Szpitalak, T.Willison, M. R.2025-12-162025-12-160741-3106ORCID:/0000-0002-0800-2276/work/162946167https://hdl.handle.net/1885/733794832Silicon solar cells are described which operate at energy conversion efficiencies in excess of 18 percent under standard terrestrial test conditions (AM1.5, 100 mW/cm2, 28°C). These are believed to be the most efficient silicon cells reported to date. The high efficiency is a result of the combination of high open-circuit voltage due to the careful attention paid to passivation of the top surface of the cell; high fill factors due to the high open-circuit voltage and low parasitic resistance losses; and high short-circuit current due to the use of shallow diffusions, a low grid coverage, and an optimized double-layer antireflection coating.2en198410.1109/EDL.1984.258130021157142