Additional file 1.Figure S1 UV-Vis (a) and PL (b) spectra of Nb-based nanomaterials. PL spectra were obtained with an excitation wavelength of 325 nm measured at room temperature. Format: PDF Size: 127KB Download file This file can be viewed with: Adobe Acrobat Reader Liu et al. Nanoscale Research Letters 2011 6:138 doi:10.1186/1556-276X-6-138 |