Fig. 2From: Effect of non-stoichiometry of initial reagents on morphological and structural properties of perovskites CH3NH3PbI3Images of CH3NH3I (a, b) and PbI2 (c, d) films without heating (a, c) and after thermal treatment at 90 °С (b, d), deposited on glass substrates. Inset in a—increased SEM-BSE image of heterogeneityBack to article page