In Figure 3 (a) the axis title as well as units are inadvertently mentioned as “Wavenumber ( cm−1)”, which should be read as “Wavelength (nm)”. In the same Figure, the peak labels are mistakenly mentioned with units of “cm−1” instead of “nm”. The “Ramanathan et al. 2009” reference in Photoluminescence section of Results and discussion is mistakenly mentioned and therefore it should be ignored.
