Nanoscale Journal Illustration Design Service (CH3NH3PbBr3)

^a Center of Ultra-precision Optoelectronic Instrument Engineering, Harbin Institute of Technology, Harbin 150080, China

^b Key Laboratory of Micro-systems and Micro-structures Manufacturing (Harbin Institute of Technology), Ministry of Education, Harbin 150080, China

^c Key Laboratory of Semiconductor Materials Science and Beijing Key Laboratory of Low Dimensional Semiconductor Materials and Devices, Institute of Semiconductors, Chinese Academy of Sciences, Beijing 100083, China

^d Center of Materials Science and Optoelectronics Engineering, University of Chinese Academy of Sciences, Beijing 100049, China

^e School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin 150080, China

^f Department of Physics, Harbin Institute of Technology, Harbin 150080, China

^g Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215125, China

^‡ These two authors contributed equally to this work.