The files in this folder contain the raw spectroscopy data used to produce Figures 6a-d and include the Raman Data (Fig6a folder), the optical absorption spectra (Fig6b folder) and also the Photoluminescence (i.e. PL) data (Fig6c-d folder). Note that Fig6c was produced by taking sections through the PL data at 650 nm (top) and 575 nm (bottom) respectively (i.e. see dotted lines on Figure 6d, main manuscript)