Fig. 4: Stabilization of the CsPbI3 cubic (α) phase.
From: Phase stabilization of cesium lead iodide perovskites for use in efficient optoelectronic devices
a Schematic illustration showing stabilization of CsPbI3 via X-site (e.g., Br) doping. b TEM image and XRD patterns of colloidal α-CsPbI3 nanocrystals after storage under ambient conditions for two months72. Reprinted with permission from Ref. 72. Copyright 2016 The American Association for the Advancement of Science. c Oleic acid-stabilized α-CsPbI354. Reprinted with permission from ref. 54. Copyright 2017 American Chemical Society. d Stabilization of α-CsPbI3 perovskite films with polyvinylpyrrolidone55. Reprinted with permission from ref. 55. Copyright 2018 Springer Nature. e Cubic phase CsPbI3 perovskite thin film with PEAI surface functionalization66. Reprinted with permission from ref. 66. Copyright 2018 Elsevier.
