EPR of iron‐boron centres in silicon

Abstract

Dedicated to Prof. Dr. 0. STASIW on the occasion of his 80th birthdayThe EPR spectra of one type of iroll-boron centres detected in low-resistivity B-doped p-silicon after iron doping are investigated in detail. The spectra are characterized by a dominating zerofield splitting and a resolved SHF structure due to the interaction with the boron isotopes and arise from interstitially incorporated Fe+ ions adjacent in < I l l ) directions t o B-ions on substitutional sites. Es werden die EPR-Spektren von einer Art von Eisen-Bor-Zentren genau untersucht, die nachEisendotierung von niederohmigem B-dotiertem p-Silizium beobachtet werden. Die Spektren sind dufch eine dominierende Nullfeldaufspaltung und eine durch die Wechselwirkung mit den Bor-Isotopen aufgeloste SHF-Struktur charakterisiert und werden durch interstitiell eingebaute Fe+-Ionen erzeugt, die den auf Gitterplatz eingebanten B--1onen in den < 111)-Richtungen benachbart sind.Rudower Chaussee 5, DDR-1199 Berlin, GDR.

Electron-dipole resonance of impurity centres embedded in silicon microcavities

“…2d. Finally, the angular dependencies of the peak positions in the photoluminescence spectra observed are found to be in a good agreement with the angular dependencies of the EPR line positions of the trigonal Fe þ i 2B À s pair calculated at n ¼ 87 GHz [5], which seem to result from the incorporation of residual iron into the B þ 2B À dipole centre at the edge of a single SQW (Fig. 6).…”

Electron‐dipole resonance of impurity centres embedded in silicon microcavities

“…pair calculated at ν=87 GHz [5], which seem to result from the incorporation of residual iron into the − + − B B dipole centre at the edge of a single SQW (Fig. 6).…”

PrimarySi29hyperfine structure ofE′centers in nm-sized silica: Probing the microscopic network structure

“…The potentiality of point defects in this sense is underlied by many examples before, e.g., P b defects at Si/ SiO 2 interfaces, 11,51 Fe impurities in Si. 52 Assessing this is a main goal. As to the current nanoparticles, the increase observed in A iso for the EЈ centers residing in the core of the nanoparticles as compared to bulk silica may also provide in depth information on more global structural/material parameters of the matrix the defects are embedded in.…”