Scientific Reports 4, Article number: 6974 10.1038/srep06974 (2014); Published: November102014; Updated: March132015
This Article contains an error in Figure 3. The y-axis should read ‘Current efficiency (cd/A)'. The correct Figure 3 appears below as Figure 1.
Figure 1.
There is also a typographical error in reference 27: “2024” should read “2014”.

