Joint postdoctoral positions (1-2) of Institue of Semiconductors Chinese Academy of Sciences (IOSCAS, Beijing,http://www.semi.ac.cn ) and Material Science Division of Lawrence Berkeley National Laboratory (LBNL, Berkeley CA, http://www.lbl.gov ) are now available. The work site is based in IOSCAS Beijing with regular visit to LBNL. The PIs include Prof. Shu-Shen Li (director) of IOSCAS, and Prof. Lin-Wang Wang in LBNL (http://cmsn.lbl.gov/index.php?topic=people ).

Now the size of the metal-oxide-semiconductor field-effect transistor (MOSFET) which is the fundamental unit of our electronic products, has been scaled down to 10 nanometers. In such dimension, the performance and reliability of the device are found to degrade significantly, which is attributed to imperfect interfaces and harmful defects in the tiny device. It becomes crucial to understand the physics of interfaces and defects in the industrial-device level, rather than simple material calculations. Such intensive large scale ab initio simulation on industrial level large systems used to be impractical. Now, with the help of our recently developed GPU ab initio code PWmat (http://www.pwmat.com ), one can run such large system simulation with 20 times speedup.

The successful candidates are expected to carry out research in one of the following areas:

1. Physics of interfaces between semiconductor (silicon, germanium) and complex dielectric oxide in crystalline or amorphous phase (SiO2, HfO2, SiN, GeO2), interfaces between semiconductor (silicon, germanium, 2D) and metal contact.
2. Physics of defects in complex dielectric oxide in crystalline or amorphous phase (SiO2, HfO2, SiN), and defects at the interface between semiconductor and dielectric oxide.  And the quantum process of charge trapping, defect assisted tunneling related to these defects.
3. General topics in amorphous semiconductors and dielectric insulators.

The candidates are required to have a PhD degree in physics, material sciences or related areas. Experience on electronic structure theories (DFT and beyond), computational simulations of solids, nanostructures and nanodevices is preferred.

The gross salary from IOSCAS is RMB 280,000 (roughly 41,000 USD) per annum. During the postdoc research, IOSCAS provides a two bedroom apartment. And an extra monthly stipend will be provided during the visit to LBNL. The positions are available for two years at the initial instance, with the possibility of extension based on mutual agreement.

The start date is immediate. Please send your CV, research statement (1 page) and contact information of 2 academic references, directly to Prof. Xiang-Wei Jiang by email ([email protected] ). The search is open until the positions are filled. Informal inquiry can be made by contacting Prof. Jiang.

Recent publications (selected from http://cmsn.lbl.gov/index.php?topic=publications ):

[1] D. Zherebetskyy, M. Scheele, Y. Zhang, N. Bronstein, C. Thompson, D. Britt, M. Salmeron, P. Alivisatos, L.W. Wang, "Hydroxylation of the surface of PbS nanocrystals passivated with oleic acid", Science 344, 1380 (2014).

[2] H.-G. Liao, D. Zherebetskyy, H. Xin, C. Czarnik, P. Ercius, H. Elmlund, M. Pan, L.W. Wang, H. Zheng, "Facet development during platinum nanocube growth", Science 345, 6199 (2014).

[3] Z. Wang, Shu-Shen Li, L.W. Wang, "An efficient real-time time-dependent DFT method and its applications to ion-2D material collision", Phys. Rev. Lett. 114, 063004 (2015).

[4] L. Dou, A.B. Wong, Y. Yu, M. Lai, N. Kernienko, S.W. Eaton, A. Fu, C.G. Bischak, J. Ma, T. Ding, N. So. Ginsberg, L.W. Wang, A.P. Alivisatos, P. Yang, "Atomically thin two-dimensional organic-inorganic hybrid perovskites", Science 349, 6255 (2015).

[5] B. Eren, D. Zherebetskyy, L.L. Patera, C.H. Wu, L.W. Wang, G.A. Somorjai, M. Salmeron, "Activation of Cu(111) surface by decomposition into nanoclusters driven by CO absorption", Science 351, 475 (2016).