In the News & Views 'Avoiding indium' (Nature Photonics 5, 201–202; 2011), credit for Figure 2 was incorrectly given to Linköping University. The figure was originally published in: Manceau, M., Angmo, D., Jørgensen, M. & Krebs, F. C. Org. Electron. 12, 566–574; 2011 and credit should therefore have been given to Elsevier and Frederik Krebs group at the Risø National Laboratory for Sustainable Energy in Denmark.

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