PhD student Xuejiao Gao from Prof. Yaping Dan’s group at the UM-SJTU joint institute participated the “ACS Symposium on Innovation in Materials Science” and won the “Best Poster Award” for the poster presentation “Defect Investigation of Boron-doped Silicon by Self-Assembled Molecular Monolayers”.
Doping by self-assembled molecular monolayers (SAMM) is a promising alternative doping technology, thanks to its advantages of forming ultra-shallow junctions, introducing no lattice damage to semiconductors and conformal doping on 3-D surfaces. In this poster, Deep Level Transient Spectroscopy (DLTS) and Minority Carrier Transient Spectroscopy (MCTS) are applied for investigating carbon-related defect in boron-doped silicon. The results show that carbon forms minority carrier traps and therefore does not affect the electrical activity of boron dopants. This finding indicates that fully activated single boron dopants may be introduced into silicon by self-assembled molecular monolayer, allowing for the development of single atom electronics.
Nobel laureate William E. Moerner is shaking hands with Xuejiao Gao in the ceremony
ACS Symposium is an international meeting hosted by the ACS Publishing Group. The symposium is held in Shanghai, China with the focus on Innovation in Materials Science. A large number of world-renowned scientists from China and around the world presented their research, including Prof. William E. Moerner who is 2014 Nobel Prize laureate in Chemistry, Prof. Lei Jiang who is an academician of Chinese Academy of Science, Prof. Peidong Yang who is distinguished professor at the University of California, Berkeley and a member of the American Academy of Arts and Sciences. In addition, CEO and editors from ACS journals also joined the conference and some presented their research work. The conference involved five sections: Cutting-edge Nanomaterials, Materials for Environment, Materials for Energy, Materials for Photon Science, Materials for Biology.