Correction to: Nature Photonics https://doi.org/10.1038/s41566-021-00893-w, published online 18 November 2021.

In the version of article initially published, there were errors in the caption to Fig. 1. In the text now reading “d, Finally, an (undoped) germanium fin is realized…” caption letter d has been included. In the text now reading “e, Cross-sectional image, obtained by STEM, of a germanium photodiode (termed Ge100_10) that features in situ-doped (different colours for p- and n-doping) silicon contact regions (f) and an EDX image of the same device,” caption letter f replaces the original letter “e.”

The errors have been corrected in the html and PDF versions of the article.