Book Chapter
Dopant metrology in advanced FinFETs
G Lansbergen, R Rahman, GC Tettamanzi, J Verduijn, LCL Hollenberg, G Klimeck, S Rogge
Cmos Nanoelectronics Innovative Devices Architectures and Applications | PAN STANFORD PUBLISHING PTE LTD | Published : 2012
DOI: 10.1201/b13063-15
Abstract
Ultra-scaled FinFET transistors bear unique fingerprint-like device- to-device differences attributed to random single impurities. This chapter describes how, through correlation of experimental data with multimillion atom tight-binding simulations using the NEMO 3-D code, it is possible to identify the impurity’s chemical species and determine their concentration, local electric field and depth below the Si/SiO2 interface. The ability to model the excited states rather than just the ground state is the critical component of the analysis and allows the demonstration of a new approach to atomistic impurity metrology.