Department of Materials Science;
Fudan University;
Shanghai 200433;
China;
Department of Physical Science and Technology;
ShanghaiTech University;
Shanghai 201210;
China;
College of Science;
Nanjing University of Aeronautics and Astronautics;
Nanjing 211106;
China;
Core-shell structure; Heterojunction; High rectifcation ratio; Self-powered; Photodetector;