Fig. 12. (a) Top view of nanocones and (b) side view of SEM image of TiO2 nanocones grown over FTO glass substrate (a and b) with 700 nm, (c) 1100 nm, (d) 1400 nm, TiO2 nanocones. Comparative works of both TiO2 nanocones and nanorods for 16 devices having various physical parameters (e) JSC, (f) VOC, (g) FF, and (h) PCE of PSCs with respect to length (reproduced with permission from ref. 139. Copyright 2015 Elsevier).
