Formation of p+n junctions by Si++B+ implantation and laser annealing

M. H. Juang*, Huang-Chung Cheng

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


The effects of rapid thermal annealing (RTA) and laser annealing (LA) on the activation and diffusion of ion-implanted boron in Si substrate have been investigated. The implant and anneal regimes, forming good shallow junctions, were presented. The Si+-preamorphized samples boron implanted with a high dosage showed largely enhanced diffusion in RTA processing. The LA process serves as an excellent scheme to effectively activate the dopant and suppress the anomalous diffusion because of its very high heating rate. A high-quality p+/n junction with a leakage current density lower than 2 nA/cm 2 and a forward ideality factor of about 1.01 was formed by laser processing.

Original languageEnglish
Pages (from-to)2092-2094
Number of pages3
JournalApplied Physics Letters
Issue number17
StatePublished - 1 Dec 1992

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