Correction to: Environmental Sustainability https://doi.org/10.1007/s42398-021-00168-8

The original version of this article unfortunately contained a mistake. In Fig. 3, the units of the Y-axis were incorrect. The corrected Fig. 3 is given below. The original article has been corrected.

Fig. 3
figure 3

Photocurrent density–voltage curves for the DSSC under 1 sun, 1.5 AM irradiation. a Black line − 0.20 g L−1 F-violacein; red line − 0.20 g L−1 NF-violacein and blue line − 0.20 g L−1 F-violacein with NP100. b Black line − 0.80 g L−1 F-violacein and blue line − 0.80 g L−1 F-violacein with NP100