Fig. 5From: All-inorganic inverse perovskite solar cells using zinc oxide nanocolloids on spin coated perovskite layerPhotographs of the perovskite solar cells; a the fresh and b under the N2 glove box for 24 h. On the left side; the solar cells were fabricated using non-aqueous process synthesis method prepared ZnO nanoparticles (No. 1). On the right side; the solar cells were fabricated using aqueous process synthesis method prepared ZnO nanoparticlesBack to article page