Photo-EPR Investigations of Thermal Donors in Silicon

• Authors: N. Bagraev , H. Bekman , T. Gregorkiewicz , C. Ammerlaan
• Languages of publication: EN

Abstracts

EN

Two thermal donor related EPR centers Si-NL8 and Si-NL10 were studied by the photo-EPR technique. The spectral dependence of the intensity of the EPR signals was determined for the region from 0.6 to 1.4 eV in several samples with different Fermi level position. The quenching of the Si-NL8 signal with the coinciding enhancement of the Si-NL10 signal has been observed with possible indication of some metastable behavior of the NL8 center. For the heavily aluminum doped material strong generation of photocurrent upon band gap illumination has been observed. The results of the study provide further evidence for mutal correlation of both thermal donor related EPR centers since the observed spectral dependences could be understood by relating both NL8 and NL10 spectra to different paramagnetic states of basically the same center.

Keywords

EN

76.30.-v; 72.20.Jv

Discipline

• 72.20.Jv: Charge carriers: generation, recombination, lifetime, and trapping
• 76.30.-v: Electron paramagnetic resonance and relaxation(see also 33.35.+r Electron resonance and relaxation in atomic and molecular physics; 87.80.Lg Magnetic and paramagnetic resonance in biological physics)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 1991
• Volume: 79
• Issue: 2-3
• Pages: 397-400

Dates

published

1991-02

received

1990-08-08

Contributors

author

N. Bagraev

• A.F. Ioffe Physico-Technical Institute, Leningrad, 194021, U.S.S.R.

author

H. Bekman

• Natuurkundig Laboratorium der Universiteit van Amsterdam, Valckenierstraat 65, NL-1018XE Amsterdam, The Netherlands

author

T. Gregorkiewicz

• Natuurkundig Laboratorium der Universiteit van Amsterdam, Valckenierstraat 65, NL-1018XE Amsterdam, The Netherlands

author

C. Ammerlaan

• Natuurkundig Laboratorium der Universiteit van Amsterdam, Valckenierstraat 65, NL-1018XE Amsterdam, The Netherlands

Identifiers

DOI

10.12693/APhysPolA.79.397