In recent years, my country has made world-renowned achievements in the field of semiconductor technology. Breakthroughs have been made in key core technologies such as intelligent processing of chips, carbon base chips, optical communication chips, and new field effect transistors, which have strongly supported the development of my country’s new generation of information technology.
On February 8, “Journal of Semiconductors” released the top ten research progress of Chinese semiconductors in 2020. Four achievements from Peking University were selected, including two from the Department of Electronics.
1. High-density semiconductor carbon nanotube parallel arrays for high-performance electronics
Peking University Zhang Zhiyong-Peng Lianmao team developed high-density and high-purity semiconductor carbon nanotube array thin film wafer fabrication technology, breaking the material bottleneck for the development of ultra-large-scale carbon tube integrated circuits for the first time. Based on this material, a carbon nanotube integrated circuit with performance exceeding that of a silicon-based CMOS circuit of the same size was demonstrated for the first time.
The results entitled “Aligned, high-density semiconducting carbon nanotube arrays for high-performance electronics” was published in Scinece (https://science.sciencemag.org/content/368/6493/850).
2. Single-guided mode resonance state observation for topology protection
For the needs of ultra-large capacity optical interconnection, from the perspective of the topological view, Peking University Peng Chao team and the collaborators constructed a unidirectional radiation guided mode resonance state in the photonic crystal, and realized the directional radiation of light without relying on mirrors. This technology is expected to significantly reduce the insertion loss of the on-chip optical port, opening up new directions for high-density photonic integration and photonic chips.
The results entitled “Observation of topologically enabled unidirectional guided resonances” was published in Nature (https://www.nature.com/articles/s41586-020-2181-4%20).
