Correction to: Nature Energy https://doi.org/10.1038/s41560-019-0389-z, published online 13 May 2019.

In the version of this Article originally published, the following text was missing from the ‘Cell fabrication and electrical testing’ section of the Methods: ‘The CdTe and CdSeTe materials were provided by 5N Plus.’ It has now been added after the sentence starting “This was followed by 1.5–2.0 µm of CdSeTe…”