Zhao et al. report bilateral Geiger mode avalanche in 2D graphene/InSe/Cr asymmetrical Schottky junction. The asymmetrical Schottky junction benefits to initiate impact ionization and multiplication for the injected majority carriers, leading to a multiplication factor up to 10 ^ 7 and a breakdown voltage of 1.4 V.
- Dongyang Zhao
- Yan Chen
- Junhao Chu