Tonghe Zhang, Guohui Li, Yan Luo, et al. A study of shallow PN junction technology for VLSI by rapid thermal annealing[J]. Nuclear techniques, 1990, 13(9): 523-529.
Tonghe Zhang, Guohui Li, Yan Luo, et al. A study of shallow PN junction technology for VLSI by rapid thermal annealing[J]. Nuclear techniques, 1990, 13(9): 523-529.DOI:
The RTA properties of As implanted into Si and implanted through a SiO
2
film into Si are studied. The fabrication of PN junction with a depth of 0.1-0.6µm has been optimized. The processes of lattice restoration and defect density change during RTA are observed by TEM. It is found that if longer annealing time and hot target implantation are used the residual defect density can be reduced greatly. The results show that diffusion coefficient is increased with increasing of ion flux. The relation of diffusion coefficient with annealing and implantation conditions are given. The influences of the above mentioned conditions on leakage current of PN junction have been studied. The conditions for making PN junction located out of the radiation damaged region have been discussed.
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