Green Energy, Renewable Energy, Sustainability, Solar Energy, Green Tech.
Large area STM image of pristine MAPbI3 showing the typical grains (Scan area = 300 ´ 300 nm2; Sample bias voltage = –2.5 V; Tunnelling current = 50 pA). (b) Large area STM image of Cl incorporated MAPbI3 showing the typical grains (Scan area = 300 ´ 300 nm2; Sample bias voltage = –2.5 V;