I. Mizushima et al., HOLE GENERATION WITHOUT ANNEALING IN HIGH-DOSE BORON-IMPLANTED SILICON - HEAVY DOPING BY B-12 ICOSAHEDRON AS A DOUBLE ACCEPTOR, JPN J A P 1, 33(1B), 1994, pp. 404-407
A high hole concentration region of about 1 x 10(21) cm(-3) was genera
ted without any post-annealing by the implantation of high doses of bo
ron into silicon substrates. X-ray photoelectron spectroscopy (XPS) me
asurement and Fourier transform IR spectroscopy (FTIR) absorption spec
tra revealed that B-12 icosahedra were created in as-implanted samples
. A new model of the generation of holes is proposed in which B-12 ico
sahedron acts as a double acceptor.