EPR and ENDOR investigations of Ge,Sn and Pb impurities in CdSe |
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| Authors: | G Schultes A Hausmann F J Schamberg R Roll R Materna |
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| Institution: | (1) 2. Physikalisches Institut der RWTH Aachen, Sommerfeldstrasse, D-5100 Aachen, Germany |
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| Abstract: | Electron paramagnetic resonance (EPR) experiments of light activated Ge, Sn and Pb impurities in wurtzite type CdSe crystals are presented. These2S1/2 centres exhibit a large hyperfine structure which shows a variation with temperature. 25 shells of neighbour nuclei are resolved for CdSe Sn by means of the Electron nuclear double resonance (ENDOR) technique. All shells belong to one of three distinct shell symmetries of the lattice thus confirming a high symmetry defect. Additional Sn respectively Ge related spectra are described and interpreted as complex centres correlated with lithium. |
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