On October 15, at the third Chip Conference and Award Ceremony tgrandly held in Shenzhen,the journal Chip officially announced its 2024 list of the " Top 10 Scientific Advances in Chinese Chip Research". Among the honored research works was the study titled "A hot emitter transistor based on controllable stimulated emission of carriers," conducted by the team led by Prof. SUN Dongming and Prof. LIU Chi from the Institute of Metal Research, Chinese Academy of Sciences (IMR, CAS) in collaboration with researchers from Peking University.

The researchers invented a hot emitter transistor using a hybrid-dimensional material system that incorporates graphene and germanium. By introducing a novel "stimulated emission" mechanism for generating hot carriers, the device achieves a subthreshold swing of less than 1 mV/dec at room temperature and a peak-to-valley current ratio exceeding 100. Furthermore, they constructed multi-value logic computing circuits, providing an original research approach for building low-power, multi-functional transistors and integrated circuits in the post-Moore era.

Prof. LIU Chi (first from right) accepts the award on behalf of the research team. (Image by IMR)