XRD patterns. ZnO layers deposited on glass substrate (a) and UV–vis transmission spectra for the FTO substrate without and with ZnO layers (b). The inset in b is the SEM photo of FTO substrate covered with 15-nm-thick ZnO film.
Ding et al. Nanoscale Research Letters 2013 8:9 doi:10.1186/1556-276X-8-9