Fig. 3From: Facile synthesis of two-dimensional Ruddlesden–Popper perovskite quantum dots with fine-tunable optical propertiesa–b TEM images of 2D RP perovskite QDs with Br series (n = 1 and 2), respectively. c–d TEM images of 2D RP perovskite QDs with I series (n = 1 and 2), respectively. The insets are the HRTEM image of representative 2D RP perovskite QDsBack to article page