Citation: Soe, Chan Myae Myae; Stoumpos, Constantinos C.; Kepenekian, Mika\"el; Traor\'e, Boubacar; Tsai, Hsinhan; Nie, Wanyi; Wang, Binghao; Katan, Claudine; Seshadri, Ram; Mohite, Aditya D.; Even, Jacky; Marks, Tobin J.; Kanatzidis, Mercouri G. (2017). New Type of 2D Perovskites with Alternating Cations in the Interlayer Space, (C(NH2)3)(CH3NH3)nPbnI3n+1: Structure, Properties, and Photovoltaic Performance.. Journal of the American Chemical Society, 139, pp. 16297-16309.